{"slug":"yzfly-golang-data-structures","name":"golang-data-structures","description":"Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals.","long_description":"---\nname: golang-data-structures\ndescription: \"Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals.\"\nuser-invocable: true\nlicense: MIT\ncompatibility: Designed for Claude Code or similar AI coding agents, and for projects using Golang.\nmetadata:\n  author: samber\n  version: \"1.1.1\"\n  openclaw:\n    emoji: \"🗃️\"\n    homepage: https://github.com/samber/cc-skills-golang\n    requires:\n      bins:\n        - go\n    install: []\nallowed-tools: Read Edit Write Glob Grep Bash(go:*) Bash(golangci-lint:*) Bash(git:*) Agent\n---\n\n**Persona:** You are a Go engineer who understands data structure internals. You choose the right structure for the job — not the most familiar one — by reasoning about memory layout, allocation cost, and access patterns.\n\n# Go Data Structures\n\nBuilt-in and standard library data structures: internals, correct usage, and selection guidance. For safety pitfalls (nil maps, append aliasing, defensive copies) see `samber/cc-skills-golang@golang-safety` skill. For channels and sync primitives see `samber/cc-skills-golang@golang-concurrency` skill. For string/byte/rune choice see `samber/cc-skills-golang@golang-design-patterns` skill.\n\n## Best Practices Summary\n\n1. **Preallocate slices and maps** with `make(T, 0, n)` / `make(map[K]V, n)` when size is known or estimable — avoids repeated growth copies and rehashing\n2. **Arrays** SHOULD be preferred over slices only for fixed, compile-time-known sizes (hash digests, IPv4 addresses, matrix dimensions)\n3. **NEVER rely on slice capacity growth timing** — the growth algorithm changed between Go versions and may change again; your code should not depend on when a new backing array is allocated\n4. **Use `container/heap`** for priority queues, **`container/list`** only when frequent middle insertions are needed, **`container/ring`** for fixed-size circular buffers\n5. **`strings.Builder`** MUST be preferred for building strings; **`bytes.Buffer`** MUST be preferred for bidirectional I/O (implements both `io.Reader` and `io.Writer`)\n6. Generic data structures SHOULD use the **tightest constraint** possible — `comparable` for keys, custom interfaces for ordering\n7. **`unsafe.Pointer`** MUST only follow the 6 valid conversion patterns from the Go spec — NEVER store in a `uintptr` variable across statements\n8. **`weak.Pointer[T]`** (Go 1.24+) SHOULD be used for caches and canonicalization maps to allow GC to reclaim entries\n\n## Slice Internals\n\nA slice is a 3-word header: pointer, length, capacity. Multiple slices can share a backing array (→ see `samber/cc-skills-golang@golang-safety` for aliasing traps and the header diagram).\n\n### Capacity Growth\n\n- < 256 elements: capacity doubles\n- > = 256 elements: grows by ~25% (`newcap += (newcap + 3*256) / 4`)\n- Each growth copies the entire backing array — O(n)\n\n### Preallocation\n\n```go\n// Exact size known\nusers := make([]User, 0, len(ids))\n\n// Approximate size known\nresults := make([]Result, 0, estimatedCount)\n\n// Pre-grow before bulk append (Go 1.21+)\ns = slices.Grow(s, additionalNeeded)\n```\n\n### `slices` Package (Go 1.21+)\n\nKey functions: `Sort`/`SortFunc`, `BinarySearch`, `Contains`, `Compact`, `Grow`. For `Clone`, `Equal`, `DeleteFunc` → see `samber/cc-skills-golang@golang-safety` skill.\n\n**[Slice Internals Deep Dive](./references/slice-internals.md)** — Full `slices` package reference, growth mechanics, `len` vs `cap`, header copying, backing array aliasing.\n\n## Map Internals\n\nMaps are hash tables with 8-entry buckets and overflow chains. They are reference types — assigning a map copies the pointer, not the data.\n\n### Preallocation\n\n```go\nm := make(map[string]*User, len(users)) // avoids rehashing during population\n```\n\n### `maps` Package Quick Reference (Go 1.21+)\n\n| Function          | Purpose                      |\n| ----------------- | ---------------------------- |\n| `Collect` (1.23+) | Build map from iterator      |\n| `Insert` (1.23+)  | Insert entries from iterator |\n| `All` (1.23+)     | Iterator over all entries    |\n| `Keys`, `Values`  | Iterators over keys/values   |\n\nFor `Clone`, `Equal`, sorted iteration → see `samber/cc-skills-golang@golang-safety` skill.\n\n**[Map Internals Deep Dive](./references/map-internals.md)** — How Go maps store and hash data, bucket overflow chains, why maps never shrink (and what to do about it), comparing map performance to alternatives.\n\n## Arrays\n\nFixed-size, value types. Copied entirely on assignment. Use for compile-time-known sizes:\n\n```go\ntype Digest [32]byte           // fixed-size, value type\nvar grid [3][3]int             // multi-dimensional\ncache := map[[2]int]Result{}   // arrays are comparable — usable as map keys\n```\n\nPrefer slices for everything else — arrays cannot grow and pass by value (expensive for large sizes).\n\n## container/ Standard Library\n\n| Package | Data Structure | Best For |\n| --- | --- | --- |\n| `container/list` | Doubly-linked list | LRU caches, frequent middle insertion/removal |\n| `container/heap` | Min-heap (priority queue) | Top-K, scheduling, Dijkstra |\n| `container/ring` | Circular buffer | Rolling windows, round-robin |\n| `bufio` | Buffered reader/writer/scanner | Efficient I/O with small reads/writes |\n\nContainer types use `any` (no type safety) — consider generic wrappers. **[Container Patterns, bufio, and Examples](./references/containers.md)** — When to use each container type, generic wrappers to add type safety, and `bufio` patterns for efficient I/O.\n\n## strings.Builder vs bytes.Buffer\n\nUse `strings.Builder` for pure string concatenation (avoids copy on `String()`), `bytes.Buffer` when you need `io.Reader` or byte manipulation. Both support `Grow(n)`. **[Details and comparison](./references/containers.md)**\n\n## Generic Collections (Go 1.18+)\n\nUse the tightest constraint possible. `comparable` for map keys, `cmp.Ordered` for sorting, custom interfaces for domain-specific ordering.\n\n```go\ntype Set[T comparable] map[T]struct{}\n\nfunc (s Set[T]) Add(v T)          { s[v] = struct{}{} }\nfunc (s Set[T]) Contains(v T) bool { _, ok := s[v]; return ok }\n```\n\n**[Writing Generic Data Structures](./references/generics.md)** — Using Go 1.18+ generics for type-safe containers, understanding constraint satisfaction, and building domain-specific generic types.\n\n## Pointer Types\n\n| Type | Use Case | Zero Value |\n| --- | --- | --- |\n| `*T` | Normal indirection, mutation, optional values | `nil` |\n| `unsafe.Pointer` | FFI, low-level memory layout (6 spec patterns only) | `nil` |\n| `weak.Pointer[T]` (1.24+) | Caches, canonicalization, weak references | N/A |\n\n**[Pointer Types Deep Dive](./references/pointers.md)** — Normal pointers, `unsafe.Pointer` (the 6 valid spec patterns), and `weak.Pointer[T]` for GC-safe caches that don't prevent cleanup.\n\n## Copy Semantics Quick Reference\n\n| Type | Copy Behavior | Independence |\n| --- | --- | --- |\n| `int`, `float`, `bool`, `string` | Value (deep copy) | Fully independent |\n| `array`, `struct` | Value (deep copy) | Fully independent |\n| `slice` | Header copied, backing array shared | Use `slices.Clone` |\n| `map` | Reference copied | Use `maps.Clone` |\n| `channel` | Reference copied | Same channel |\n| `*T` (pointer) | Address copied | Same underlying value |\n| `interface` | Value copied (type + value pair) | Depends on held type |\n\n## Third-Party Libraries\n\nFor advanced data structures (trees, sets, queues, stacks) beyond the standard library:\n\n- **`emirpasic/gods`** — comprehensive collection library (trees, sets, lists, stacks, maps, queues)\n- **`deckarep/golang-set`** — thread-safe and non-thread-safe set implementations\n- **`gammazero/deque`** — fast double-ended queue\n\nWhen using third-party libraries, refer to their official documentation and code examples for current API signatures. Context7 can help as a discoverability platform.\n\n## Cross-References\n\n- → See `samber/cc-skills-golang@golang-performance` skill for struct field alignment, memory layout optimization, and cache locality\n- → See `samber/cc-skills-golang@golang-safety` skill for nil map/slice pitfalls, append aliasing, defensive copying, `slices.Clone`/`Equal`\n- → See `samber/cc-skills-golang@golang-concurrency` skill for channels, `sync.Map`, `sync.Pool`, and all sync primitives\n- → See `samber/cc-skills-golang@golang-design-patterns` skill for `string` vs `[]byte` vs `[]rune`, iterators, streaming\n- → See `samber/cc-skills-golang@golang-structs-interfaces` skill for struct composition, embedding, and generics vs `any`\n- → See `samber/cc-skills-golang@golang-code-style` skill for slice/map initialization style\n\n## Common Mistakes\n\n| Mistake | Fix |\n| --- | --- |\n| Growing a slice in a loop without preallocation | Each growth copies the entire backing array — O(n) per growth. Use `make([]T, 0, n)` or `slices.Grow` |\n| Using `container/list` when a slice would suffice | Linked lists have poor cache locality (each node is a separate heap allocation). Benchmark first |\n| `bytes.Buffer` for pure string building | Buffer's `String()` copies the underlying bytes. `strings.Builder` avoids this copy |\n| `unsafe.Pointer` stored as `uintptr` across statements | GC can move the object between statements — the `uintptr` becomes a dangling reference |\n| Large struct values in maps (copying overhead) | Map access copies the entire value. Use `map[K]*V` for large value types to avoid the copy |\n\n## References\n\n- [Go Data Structures (Russ Cox)](https://research.swtch.com/godata)\n- [The Go Memory Model](https://go.dev/ref/mem)\n- [Effective Go](https://go.dev/doc/effective_go)\n","tagline":"Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy sem","category":"design-creative","tags":["agent-skill"],"author":"yzfly","verified":false,"attribution":{"status":"registry_indexed","statusLabel":"Registry indexed","shortLabel":"REGISTRY INDEXED","sourceLabel":"recursive skill source sync","sourceDetail":"yzfly/skills","creatorName":"yzfly","creatorUrl":"https://github.com/yzfly","sourceUrl":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/yzfly-golang-data-structures#claim-this-skill","claimCta":"Claim this skill","trustNote":"This listing was indexed from public sources and is not marked official until a maintainer claim is approved.","publicNote":"Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals."},"stats":{"stars":12,"forks":2,"verified_installs":0,"successful_runs":0,"total_outcomes":0,"rating":0,"review_count":0,"quality_score":31.35},"quality":{"score":58,"tier":"promising","label":"Promising","summary":"Useful candidate, but compare it with alternatives before adopting.","signals":[{"label":"GitHub stars","value":"12","tone":"neutral"},{"label":"Freshness","value":"1d ago","tone":"positive"},{"label":"Install ready","value":"Yes","tone":"positive"},{"label":"License","value":"MIT","tone":"neutral"}],"warnings":["Low GitHub adoption signal","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness."]},"trust":{"version":"trust-score-v5","score":59,"base_score":67,"outcome_confidence":0,"tier":"risk","label":"Do not auto-install","summary":"Trust Score v5 found insufficient evidence for agent installation. Treat this as discovery material, not an executable recommendation.","recommendedAction":"Choose a stronger alternative or inspect the source manually before any install attempt.","decision":{"install_policy":"human_review_before_install","auto_install_allowed":false,"human_review_required":true,"sandbox_first":true,"agent_action":"Compare alternatives before installing.","reasoning":["59/100 Trust Score v5","67/100 Trust Score v4 baseline","Needs more real agent outcomes before unattended install","Install path is available","Review before production"],"review_required_when":["The workspace contains production secrets, payments, private customer data, or irreversible actions.","The install command requests shell, network, credential, database, or broad filesystem access.","Outcome evidence is missing, recently failed, or required human review.","Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"]},"dimensions":[{"id":"github_adoption","label":"GitHub adoption","score":30,"weight":0.13,"status":"fail","detail":"12 GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":32,"weight":0.08,"status":"fail","detail":"12 stars, 2 forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"1d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"MIT"},{"id":"documentation","label":"README/SKILL.md completeness","score":86,"weight":0.14,"status":"pass","detail":"Metadata includes enough usage and workflow context"},{"id":"dependency_risk","label":"Dependency/runtime risk","score":54,"weight":0.12,"status":"warn","detail":"command execution surface, external package install surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add yzfly/skills --skill golang-data-structures"},{"id":"install_safety","label":"Install command safety","score":92,"weight":0.1,"status":"pass","detail":"standard package or runtime install path"},{"id":"permission_surface","label":"Permission surface","score":62,"weight":0.07,"status":"info","detail":"shell or command execution, network or browser access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures"},{"id":"review_status","label":"Review status","score":66,"weight":0.05,"status":"info","detail":"AI review data available"},{"id":"agent_outcomes","label":"Agent Proven outcomes","score":54,"weight":0.13,"status":"info","detail":"No agent outcome data yet"}],"checks":[{"status":"fail","label":"GitHub adoption","detail":"12 GitHub stars"},{"status":"fail","label":"Stars/forks activity","detail":"12 stars, 2 forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"1d since push"},{"status":"pass","label":"License clarity","detail":"MIT"},{"status":"pass","label":"README/SKILL.md completeness","detail":"Metadata includes enough usage and workflow context"},{"status":"warn","label":"Dependency/runtime risk","detail":"command execution surface, external package install surface"},{"status":"pass","label":"Install availability","detail":"npx skills add yzfly/skills --skill golang-data-structures"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"info","label":"Permission surface","detail":"shell or command execution, network or browser access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures"},{"status":"info","label":"Review status","detail":"AI review data available"},{"status":"info","label":"Agent Proven outcomes","detail":"No agent outcome data yet"},{"status":"warn","label":"Ownership","detail":"No approved owner claim yet"},{"status":"info","label":"OpenAgentSkill usage","detail":"No local usage activity yet"},{"status":"info","label":"Agent outcomes","detail":"No agent outcome data yet"}],"strengths":["AI review approved","Install path is available","Repository evidence is available","Recently maintained repository","Install command has no obvious high-risk pattern","Outcome loop is ready but needs first real agent run"],"warnings":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface","No real agent outcome reports yet","Human review required before unattended installation"],"evidence":{"stars":"12 GitHub stars","repoActivity":"12 stars, 2 forks","lastPushed":"1d since push","license":"MIT","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","install":"npx skills add yzfly/skills --skill golang-data-structures","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, network or browser access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet","agentProvenScore":0,"outcomeConfidence":"0%","installPolicy":"human_review_before_install"},"installReadiness":{"ready":true,"command":"npx skills add yzfly/skills --skill golang-data-structures","policy":"human_review_before_install","label":"Human review before install","notes":["Install path is available","Repository evidence is available","License is declared","No Agent Proven outcome evidence yet","1d since push","Trust Score v5 requires review or sandbox-only use before install."]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata"]},"outcomeEvidence":{"total":0,"successes":0,"failures":0,"notRelevant":0,"successRate":null,"installAttempts":0,"riskBlocked":0,"setupRequired":0,"installSuccessRate":null,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"recentSuccessRate":null,"recentFailureRate":null,"uniqueAgents":0,"agentProvenScore":0,"agentProvenLabel":"Needs first agent run","lastOutcomeAt":null,"label":"No agent outcome data yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Compare alternatives before installing."},"outcome_loop":{"version":"openagentskill-agent-outcome-v3","required_after_install":true,"endpoint":"/api/agent/outcome","method":"POST","event_id_source":"feedback.event_id, install_receipt.resolve_event_id, or decision_packet.outcome_feedback.event_id","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"required_fields":["event_id","skill_slug","task"],"quality_fields":["task_success","output_quality","error_type","human_review_required","used_in_production","workspace","evidence_url","time_to_useful_ms"],"ranking_inputs_updated":["Trust Score v5 outcome confidence","Agent Proven Score","Resolve ranking task-fit evidence","Skill detail machine-readable metadata","Outcome leaderboard"]},"agent_contract":{"suited_tasks":["design-creative","agent-skill"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"install_command":"npx skills add yzfly/skills --skill golang-data-structures","trust_score":59,"trust_version":"trust-score-v5","risk_level":"medium","do_not_use_when":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"before_install":["Read the audit page and machine-readable metadata.","Confirm the install command, license, and permission surface fit the workspace.","Get explicit human approval or choose an alternative before installing."],"after_run":["Report the outcome to /api/agent/outcome using the resolve event id.","Include output_quality, workspace, human_review_required, and evidence_url when available.","Re-resolve before broad production rollout."]},"bestFor":["design-creative","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"],"backward_compatible":{"trust_score_v4":{"version":"trust-score-v4","score":67,"tier":"review","label":"Manual review","summary":"Potentially useful, but at least one trust signal needs human inspection."}}},"trust_score_v5":{"version":"trust-score-v5","score":59,"base_score":67,"outcome_confidence":0,"tier":"risk","label":"Do not auto-install","summary":"Trust Score v5 found insufficient evidence for agent installation. Treat this as discovery material, not an executable recommendation.","recommendedAction":"Choose a stronger alternative or inspect the source manually before any install attempt.","decision":{"install_policy":"human_review_before_install","auto_install_allowed":false,"human_review_required":true,"sandbox_first":true,"agent_action":"Compare alternatives before installing.","reasoning":["59/100 Trust Score v5","67/100 Trust Score v4 baseline","Needs more real agent outcomes before unattended install","Install path is available","Review before production"],"review_required_when":["The workspace contains production secrets, payments, private customer data, or irreversible actions.","The install command requests shell, network, credential, database, or broad filesystem access.","Outcome evidence is missing, recently failed, or required human review.","Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"]},"dimensions":[{"id":"github_adoption","label":"GitHub adoption","score":30,"weight":0.13,"status":"fail","detail":"12 GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":32,"weight":0.08,"status":"fail","detail":"12 stars, 2 forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"1d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"MIT"},{"id":"documentation","label":"README/SKILL.md completeness","score":86,"weight":0.14,"status":"pass","detail":"Metadata includes enough usage and workflow context"},{"id":"dependency_risk","label":"Dependency/runtime risk","score":54,"weight":0.12,"status":"warn","detail":"command execution surface, external package install surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add yzfly/skills --skill golang-data-structures"},{"id":"install_safety","label":"Install command safety","score":92,"weight":0.1,"status":"pass","detail":"standard package or runtime install path"},{"id":"permission_surface","label":"Permission surface","score":62,"weight":0.07,"status":"info","detail":"shell or command execution, network or browser access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures"},{"id":"review_status","label":"Review status","score":66,"weight":0.05,"status":"info","detail":"AI review data available"},{"id":"agent_outcomes","label":"Agent Proven outcomes","score":54,"weight":0.13,"status":"info","detail":"No agent outcome data yet"}],"checks":[{"status":"fail","label":"GitHub adoption","detail":"12 GitHub stars"},{"status":"fail","label":"Stars/forks activity","detail":"12 stars, 2 forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"1d since push"},{"status":"pass","label":"License clarity","detail":"MIT"},{"status":"pass","label":"README/SKILL.md completeness","detail":"Metadata includes enough usage and workflow context"},{"status":"warn","label":"Dependency/runtime risk","detail":"command execution surface, external package install surface"},{"status":"pass","label":"Install availability","detail":"npx skills add yzfly/skills --skill golang-data-structures"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"info","label":"Permission surface","detail":"shell or command execution, network or browser access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures"},{"status":"info","label":"Review status","detail":"AI review data available"},{"status":"info","label":"Agent Proven outcomes","detail":"No agent outcome data yet"},{"status":"warn","label":"Ownership","detail":"No approved owner claim yet"},{"status":"info","label":"OpenAgentSkill usage","detail":"No local usage activity yet"},{"status":"info","label":"Agent outcomes","detail":"No agent outcome data yet"}],"strengths":["AI review approved","Install path is available","Repository evidence is available","Recently maintained repository","Install command has no obvious high-risk pattern","Outcome loop is ready but needs first real agent run"],"warnings":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface","No real agent outcome reports yet","Human review required before unattended installation"],"evidence":{"stars":"12 GitHub stars","repoActivity":"12 stars, 2 forks","lastPushed":"1d since push","license":"MIT","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","install":"npx skills add yzfly/skills --skill golang-data-structures","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, network or browser access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet","agentProvenScore":0,"outcomeConfidence":"0%","installPolicy":"human_review_before_install"},"installReadiness":{"ready":true,"command":"npx skills add yzfly/skills --skill golang-data-structures","policy":"human_review_before_install","label":"Human review before install","notes":["Install path is available","Repository evidence is available","License is declared","No Agent Proven outcome evidence yet","1d since push","Trust Score v5 requires review or sandbox-only use before install."]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata"]},"outcomeEvidence":{"total":0,"successes":0,"failures":0,"notRelevant":0,"successRate":null,"installAttempts":0,"riskBlocked":0,"setupRequired":0,"installSuccessRate":null,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"recentSuccessRate":null,"recentFailureRate":null,"uniqueAgents":0,"agentProvenScore":0,"agentProvenLabel":"Needs first agent run","lastOutcomeAt":null,"label":"No agent outcome data yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Compare alternatives before installing."},"outcome_loop":{"version":"openagentskill-agent-outcome-v3","required_after_install":true,"endpoint":"/api/agent/outcome","method":"POST","event_id_source":"feedback.event_id, install_receipt.resolve_event_id, or decision_packet.outcome_feedback.event_id","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"required_fields":["event_id","skill_slug","task"],"quality_fields":["task_success","output_quality","error_type","human_review_required","used_in_production","workspace","evidence_url","time_to_useful_ms"],"ranking_inputs_updated":["Trust Score v5 outcome confidence","Agent Proven Score","Resolve ranking task-fit evidence","Skill detail machine-readable metadata","Outcome leaderboard"]},"agent_contract":{"suited_tasks":["design-creative","agent-skill"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"install_command":"npx skills add yzfly/skills --skill golang-data-structures","trust_score":59,"trust_version":"trust-score-v5","risk_level":"medium","do_not_use_when":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"before_install":["Read the audit page and machine-readable metadata.","Confirm the install command, license, and permission surface fit the workspace.","Get explicit human approval or choose an alternative before installing."],"after_run":["Report the outcome to /api/agent/outcome using the resolve event id.","Include output_quality, workspace, human_review_required, and evidence_url when available.","Re-resolve before broad production rollout."]},"bestFor":["design-creative","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"],"backward_compatible":{"trust_score_v4":{"version":"trust-score-v4","score":67,"tier":"review","label":"Manual review","summary":"Potentially useful, but at least one trust signal needs human inspection."}}},"trust_score_v4":{"version":"trust-score-v4","score":67,"tier":"review","label":"Manual review","summary":"Potentially useful, but at least one trust signal needs human inspection.","recommendedAction":"Inspect the repository, license, and recent activity before connecting it to agent workflows.","dimensions":[{"id":"github_adoption","label":"GitHub adoption","score":30,"weight":0.13,"status":"fail","detail":"12 GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":32,"weight":0.08,"status":"fail","detail":"12 stars, 2 forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"1d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"MIT"},{"id":"documentation","label":"README/SKILL.md completeness","score":86,"weight":0.14,"status":"pass","detail":"Metadata includes enough usage and workflow context"},{"id":"dependency_risk","label":"Dependency/runtime risk","score":54,"weight":0.12,"status":"warn","detail":"command execution surface, external package install surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add yzfly/skills --skill golang-data-structures"},{"id":"install_safety","label":"Install command safety","score":92,"weight":0.1,"status":"pass","detail":"standard package or runtime install path"},{"id":"permission_surface","label":"Permission surface","score":62,"weight":0.07,"status":"info","detail":"shell or command execution, network or browser access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures"},{"id":"review_status","label":"Review status","score":66,"weight":0.05,"status":"info","detail":"AI review data available"},{"id":"agent_outcomes","label":"Agent Proven outcomes","score":54,"weight":0.13,"status":"info","detail":"No agent outcome data yet"}],"checks":[{"status":"fail","label":"GitHub adoption","detail":"12 GitHub stars"},{"status":"fail","label":"Stars/forks activity","detail":"12 stars, 2 forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"1d since push"},{"status":"pass","label":"License clarity","detail":"MIT"},{"status":"pass","label":"README/SKILL.md completeness","detail":"Metadata includes enough usage and workflow context"},{"status":"warn","label":"Dependency/runtime risk","detail":"command execution surface, external package install surface"},{"status":"pass","label":"Install availability","detail":"npx skills add yzfly/skills --skill golang-data-structures"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"info","label":"Permission surface","detail":"shell or command execution, network or browser access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures"},{"status":"info","label":"Review status","detail":"AI review data available"},{"status":"info","label":"Agent Proven outcomes","detail":"No agent outcome data yet"},{"status":"warn","label":"Ownership","detail":"No approved owner claim yet"},{"status":"info","label":"OpenAgentSkill usage","detail":"No local usage activity yet"},{"status":"info","label":"Agent outcomes","detail":"No agent outcome data yet"}],"strengths":["AI review approved","Install path is available","Repository evidence is available","Recently maintained repository","Install command has no obvious high-risk pattern"],"warnings":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"],"evidence":{"stars":"12 GitHub stars","repoActivity":"12 stars, 2 forks","lastPushed":"1d since push","license":"MIT","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","install":"npx skills add yzfly/skills --skill golang-data-structures","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, network or browser access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"},"installReadiness":{"ready":true,"command":"npx skills add yzfly/skills --skill golang-data-structures","policy":"human_review_before_install","label":"Human review before install","notes":["Install path is available","Repository evidence is available","License is declared","No Agent Proven outcome evidence yet","1d since push"]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata"]},"outcomeEvidence":{"total":0,"successes":0,"failures":0,"notRelevant":0,"successRate":null,"installAttempts":0,"riskBlocked":0,"setupRequired":0,"installSuccessRate":null,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"recentSuccessRate":null,"recentFailureRate":null,"uniqueAgents":0,"agentProvenScore":0,"agentProvenLabel":"Needs first agent run","lastOutcomeAt":null,"label":"No agent outcome data yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Human review or sandbox validation is required before automatic installation."},"bestFor":["design-creative","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"outcome_stats":null,"safety":{"score":49,"level":"avoid_auto_install","label":"Avoid automatic install","safety_tier":{"tier":"experimental","label":"Experimental","badge":"EXPERIMENTAL","summary":"Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","auto_install_policy":"review","reasons":["High-risk permission hints: Shell or command execution","49/100 agent safety score"]},"auto_install_allowed":false,"human_review_required":true,"blocked":false,"audit_risk":"needs_review","permission_hints":[{"id":"shell","label":"Shell or command execution","reason":"Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.","severity":"high"},{"id":"network","label":"Network access","reason":"Skill likely fetches remote pages, APIs, repositories, or external services.","severity":"medium"}],"policy_warnings":["High-risk permission hints: Shell or command execution","Dependency or permission surface needs review"],"constraints_applied":{"max_risk":"medium","needs_install_command":true,"min_stars":0}},"safety_gate":{"tier":"experimental","label":"Experimental","badge":"EXPERIMENTAL","auto_install_policy":"review","auto_install_allowed":false,"blocked":false,"human_review_required":true,"recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","reasons":["High-risk permission hints: Shell or command execution","49/100 agent safety score"]},"eval":{"version":"openagentskill-skill-eval-v1","status":"review","score":66,"risk_level":"medium","decision":{"recommendation":"manual_review","reason":"Test manually in an isolated workspace and compare against safer alternatives.","auto_install_allowed":false,"policy":"review","human_review_required":true},"blockers":[],"warnings":["Trust score: Potentially useful, but at least one trust signal needs human inspection.","Audit score: Needs review","Agent safety gate: Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","Permission surface: shell or command execution, network or browser access","High-risk permission hints: Shell or command execution","Dependency or permission surface needs review","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"],"validation_plan":["Inspect repository, README/SKILL.md, license, and recent commits before production use.","Install in an isolated workspace or sandbox with no production secrets available.","Run the smallest representative task and record files touched, commands run, network access, and outputs.","Compare the selected skill against at least one alternative when the eval status is review or failed.","Promote only after the agent reports a successful verification result and unresolved warnings are accepted."],"checks":[{"id":"task_fit","label":"Task fit","status":"pass","score":94,"required_for_auto_install":true,"detail":"Task wording matches this skill metadata.","evidence":["Evaluate golang-data-structures before installing it in an agent workflow","design-creative","RAG and knowledge workflows; Claude Code teams; builders willing to evaluate younger projects"]},{"id":"install_path","label":"Install path","status":"pass","score":92,"required_for_auto_install":true,"detail":"Install handoff is available.","evidence":["npx skills add yzfly/skills --skill golang-data-structures"]},{"id":"install_safety","label":"Install command safety","status":"pass","score":92,"required_for_auto_install":true,"detail":"standard package or runtime install path","evidence":["npx skills add yzfly/skills --skill golang-data-structures"]},{"id":"trust_score","label":"Trust score","status":"warn","score":67,"required_for_auto_install":true,"detail":"Potentially useful, but at least one trust signal needs human inspection.","evidence":["Manual review","12 GitHub stars","MIT"]},{"id":"audit_score","label":"Audit score","status":"warn","score":73,"required_for_auto_install":true,"detail":"Needs review","evidence":["Dependency or permission surface needs review"]},{"id":"agent_safety_gate","label":"Agent safety gate","status":"warn","score":49,"required_for_auto_install":true,"detail":"Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","evidence":["Test manually in an isolated workspace and compare against safer alternatives.","High-risk permission hints: Shell or command execution"]},{"id":"readme_skillmd_completeness","label":"README/SKILL.md completeness","status":"pass","score":86,"required_for_auto_install":false,"detail":"Metadata includes enough usage and workflow context","evidence":["Strong README/SKILL.md context"]},{"id":"license_clarity","label":"License clarity","status":"pass","score":86,"required_for_auto_install":true,"detail":"MIT","evidence":["MIT"]},{"id":"recent_maintenance","label":"Recent maintenance","status":"pass","score":100,"required_for_auto_install":false,"detail":"1d since push","evidence":["1d since push"]},{"id":"permission_surface","label":"Permission surface","status":"warn","score":62,"required_for_auto_install":true,"detail":"shell or command execution, network or browser access","evidence":["Shell or command execution: high","Network access: medium"]},{"id":"alternatives","label":"Alternatives available","status":"info","score":55,"required_for_auto_install":false,"detail":"No close alternatives were found in the current shortlist.","evidence":[]}],"endpoints":{"web":"https://www.openagentskill.com/skills/yzfly-golang-data-structures/evals","api":"/api/agent/evals?slug=yzfly-golang-data-structures","text":"/api/agent/evals?slug=yzfly-golang-data-structures&format=text"}},"agent_readable_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"yzfly-golang-data-structures","name":"golang-data-structures","description":"Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals.","category":"design-creative","url":"https://www.openagentskill.com/skills/yzfly-golang-data-structures","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","github_repo":"yzfly/skills"},"suited_tasks":["RAG and knowledge workflows","Claude Code teams","builders willing to evaluate younger projects","Chunk documents","Create embeddings","Retrieve and cite relevant passages","Inspect source files","Explain architecture"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add yzfly/skills --skill golang-data-structures","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.2.1/openagentskill-0.2.1.tgz install yzfly-golang-data-structures"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"golang-data-structures\" agent skill from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"claude-code","label":"Claude Code","kind":"agent-prompt","value":"Add \"golang-data-structures\" as a Claude Code skill from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"golang-data-structures\" from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/yzfly-golang-data-structures/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/yzfly-golang-data-structures"},"trust":{"score":67,"label":"Manual review","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"12 GitHub stars","repoActivity":"12 stars, 2 forks","lastPushed":"1d since push","license":"MIT","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","install":"npx skills add yzfly/skills --skill golang-data-structures","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, network or browser access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":73,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Dependency or permission surface needs review","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"]},"safety_gate":{"tier":"experimental","label":"Experimental","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Test manually in an isolated workspace and compare against safer alternatives."},"quality":{"score":58,"label":"Promising"},"supply":{"track":"Coding and developer agents","scenario":"Coding agents","maintenance":"1d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","Low GitHub adoption signal","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","No OpenAgentSkill engagement data yet","High-risk permission hints: Shell or command execution","Dependency or permission surface needs review","Quality score needs review"],"agent_contract":{"task_input":"Use golang-data-structures in an agent workflow","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","install_policy":"review","minimum_review_before_use":["Trust: 67/100 Manual review","Audit: 73/100 Needs review","Safety: 49/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"yzfly-golang-data-structures (golang-data-structures)","install_command":"npx skills add yzfly/skills --skill golang-data-structures","risk_summary":"Needs review; Experimental; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"yzfly-golang-data-structures","task":"Use golang-data-structures in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/yzfly-golang-data-structures","api":"https://www.openagentskill.com/api/agent/skills/yzfly-golang-data-structures","audit":"https://www.openagentskill.com/skills/yzfly-golang-data-structures/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=yzfly-golang-data-structures&task=Use%20golang-data-structures%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20golang-data-structures%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20golang-data-structures%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/yzfly-golang-data-structures/install","manifest":"https://www.openagentskill.com/api/registry/manifest/yzfly-golang-data-structures"}},"machine_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"yzfly-golang-data-structures","name":"golang-data-structures","description":"Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals.","category":"design-creative","url":"https://www.openagentskill.com/skills/yzfly-golang-data-structures","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","github_repo":"yzfly/skills"},"suited_tasks":["RAG and knowledge workflows","Claude Code teams","builders willing to evaluate younger projects","Chunk documents","Create embeddings","Retrieve and cite relevant passages","Inspect source files","Explain architecture"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add yzfly/skills --skill golang-data-structures","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.2.1/openagentskill-0.2.1.tgz install yzfly-golang-data-structures"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"golang-data-structures\" agent skill from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"claude-code","label":"Claude Code","kind":"agent-prompt","value":"Add \"golang-data-structures\" as a Claude Code skill from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."},{"id":"cursor","label":"Cursor","kind":"agent-prompt","value":"Turn \"golang-data-structures\" from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes."}],"handoff_url":"https://www.openagentskill.com/api/skills/yzfly-golang-data-structures/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/yzfly-golang-data-structures"},"trust":{"score":67,"label":"Manual review","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"12 GitHub stars","repoActivity":"12 stars, 2 forks","lastPushed":"1d since push","license":"MIT","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","install":"npx skills add yzfly/skills --skill golang-data-structures","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, network or browser access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"]},"agent_proven":{"version":"agent-proven-v1","score":0,"tier":"unproven","label":"Needs first agent run","summary":"No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.","metrics":{"totalOutcomes":0,"successfulOutcomes":0,"failedOutcomes":0,"installAttempts":0,"installSuccessRate":null,"successRate":null,"recentSuccessRate":null,"recentFailureRate":null,"riskBlocked":0,"setupRequired":0,"notRelevant":0,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"uniqueAgents":0,"lastOutcomeAt":null},"signals":[],"penalties":["No real agent outcome evidence yet"]},"audit":{"score":73,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Dependency or permission surface needs review","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"]},"safety_gate":{"tier":"experimental","label":"Experimental","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Test manually in an isolated workspace and compare against safer alternatives."},"quality":{"score":58,"label":"Promising"},"supply":{"track":"Coding and developer agents","scenario":"Coding agents","maintenance":"1d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","Low GitHub adoption signal","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","No OpenAgentSkill engagement data yet","High-risk permission hints: Shell or command execution","Dependency or permission surface needs review","Quality score needs review"],"agent_contract":{"task_input":"Use golang-data-structures in an agent workflow","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","install_policy":"review","minimum_review_before_use":["Trust: 67/100 Manual review","Audit: 73/100 Needs review","Safety: 49/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"yzfly-golang-data-structures (golang-data-structures)","install_command":"npx skills add yzfly/skills --skill golang-data-structures","risk_summary":"Needs review; Experimental; Review before production","verification_result":"Report the smallest successful task, files touched, warnings, and any missing setup."}},"outcome_feedback":{"endpoint":"https://www.openagentskill.com/api/agent/outcome","method":"POST","requires_resolve_event_id":true,"event_id_source":"Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.","expected_outcomes":["success","failed","not_relevant","blocked_by_risk","setup_required"],"payload_template":{"event_id":"<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>","skill_slug":"yzfly-golang-data-structures","task":"Use golang-data-structures in an agent workflow","agent":"codex","outcome":"success","install_used":true,"risk_blocked":false,"setup_required":false,"task_success":true,"output_quality":4,"error_type":null,"human_review_required":false,"workspace":"sandbox","time_to_useful_ms":120000,"notes":"Report the smallest successful task, setup friction, files touched, and risk notes."}},"endpoints":{"web":"https://www.openagentskill.com/skills/yzfly-golang-data-structures","api":"https://www.openagentskill.com/api/agent/skills/yzfly-golang-data-structures","audit":"https://www.openagentskill.com/skills/yzfly-golang-data-structures/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=yzfly-golang-data-structures&task=Use%20golang-data-structures%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20golang-data-structures%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20golang-data-structures%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/yzfly-golang-data-structures/install","manifest":"https://www.openagentskill.com/api/registry/manifest/yzfly-golang-data-structures"}},"supply_profile":{"track":{"slug":"coding","label":"Coding and developer agents","shortLabel":"Coding","description":"Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills."},"scenario":{"label":"Coding agents","description":"I need a coding agent that can understand a repository, edit code, and review pull requests.","useCases":[{"slug":"rag-knowledge","title":"RAG and knowledge"},{"slug":"coding-agents","title":"Coding agents"},{"slug":"browser-automation","title":"Browser automation"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add yzfly/skills --skill golang-data-structures","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":12,"starsLabel":"12","forks":2,"license":"MIT","qualityScore":58,"trustScore":67,"auditScore":73},"maintenance":{"status":"fresh","label":"1d since push","daysSincePush":1,"lastPushedAt":"2026-08-23T04:21:57+00:00"},"risk":{"level":"needs_review","label":"Needs review","requiresReview":true,"notes":["Dependency or permission surface needs review","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars"]},"coverageTags":["Coding","Coding agents","design-creative","agent-skill"]},"audit":{"audit_score":73,"risk_level":"needs_review","risk_label":"Needs review","quality_score":58,"trust_score":67,"maintenance_score":100,"security_score":74,"install_score":92,"warnings":["Dependency or permission surface needs review","The skill references other skills (golang-safety, golang-concurrency, golang-design-patterns) that are not included in this submission, which may reduce standalone completeness.","Low GitHub adoption signal","Quality score needs review","GitHub adoption: 12 GitHub stars","Stars/forks activity: 12 stars, 2 forks; issue activity unavailable in current metadata","Dependency/runtime risk: command execution surface, external package install surface"]},"quality_signals":{"model":"v2","star_score":7.8,"usage_score":0,"review_score":5.55,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code"],"use_cases":[{"slug":"rag-knowledge","title":"RAG and knowledge","url":"https://www.openagentskill.com/use-cases/rag-knowledge"},{"slug":"coding-agents","title":"Coding agents","url":"https://www.openagentskill.com/use-cases/coding-agents"},{"slug":"browser-automation","title":"Browser automation","url":"https://www.openagentskill.com/use-cases/browser-automation"},{"slug":"research-agents","title":"Research agents","url":"https://www.openagentskill.com/use-cases/research-agents"}],"stacks":[{"slug":"rag-knowledge-base","title":"RAG knowledge base","url":"https://www.openagentskill.com/collections/rag-knowledge-base"},{"slug":"browser-qa-agent","title":"Browser QA agent","url":"https://www.openagentskill.com/collections/browser-qa-agent"},{"slug":"coding-review-agent","title":"Coding review agent","url":"https://www.openagentskill.com/collections/coding-review-agent"}],"install":"npx skills add yzfly/skills --skill golang-data-structures","install_targets":[{"id":"openagentskill-cli","label":"CLI","title":"OpenAgentSkill CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.2.1/openagentskill-0.2.1.tgz install yzfly-golang-data-structures","description":"Resolve policy, run the source installer safely, and report a verified install receipt.","copyLabel":"Copy command"},{"id":"codex","label":"Codex","title":"Codex install prompt","kind":"agent-prompt","value":"Install the \"golang-data-structures\" agent skill from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"codex\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Give Codex a repo-aware install prompt when the skill is not available through a local CLI.","copyLabel":"Copy prompt"},{"id":"claude-code","label":"Claude Code","title":"Claude Code skill prompt","kind":"agent-prompt","value":"Add \"golang-data-structures\" as a Claude Code skill from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures. Inspect the skill instructions, place the reusable skill files in the appropriate local skills location for this project, and report the activation steps. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"claude-code\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this prompt to ask Claude Code to add the skill and explain the local activation steps.","copyLabel":"Copy prompt"},{"id":"cursor","label":"Cursor","title":"Cursor rule prompt","kind":"agent-prompt","value":"Turn \"golang-data-structures\" from https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures into a reusable Cursor project rule or agent instruction. Preserve the core workflow, adapt paths to this repo, and keep the rule scoped to tasks where it is relevant. Skill purpose: Golang data structures — slices (internals, capacity growth, preallocation, slices package), maps (internals, hash buckets, maps package), arrays, container/list/heap/ring, strings.Builder vs bytes.Buffer, generic collections, pointers (unsafe.Pointer, weak.Pointer), and copy semantics. Use when choosing or optimizing Go data structures, implementing generic containers, using container/ packages, unsafe or weak pointers, or questioning slice/map internals. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {\"event_id\":\"install_<unique-id>\",\"skill_slug\":\"yzfly-golang-data-structures\",\"task\":\"Install golang-data-structures\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.","description":"Use this when installing as Cursor project rules or reusable agent instructions.","copyLabel":"Copy prompt"}],"repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","github_repo":"yzfly/skills","version":"1.0.0","license":"MIT","urls":{"web":"https://www.openagentskill.com/skills/yzfly-golang-data-structures","repository":"https://github.com/yzfly/skills/tree/main/skills/cto/references/payload/backend/golang/golang-data-structures","api":"/api/agent/skills/yzfly-golang-data-structures","install_api":"/api/skills/yzfly-golang-data-structures/install"},"meta":{"created_at":"2026-08-23T04:36:16.594449+00:00","updated_at":"2026-08-23T04:36:16.594449+00:00","agent_friendly":true}}