{"slug":"trailofbits-c-review","name":"c-review","description":"Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code.","long_description":"---\nname: c-review\ndescription: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code.\nallowed-tools: Workflow AskUserQuestion Bash Read\n---\n\n# C/C++ Security Review\n\nResolve four parameters, make one `Workflow` call, return the report. The workflow owns\nconcurrency, retries and result collection.\n\n**Use for:** native C/C++ userspace — memory safety, integer overflow, races, type\nconfusion, Linux/macOS daemons, Windows services.\n\n**Not for:** kernel drivers or modules; managed languages (Java, C#, Python, Go, Rust);\nembedded or bare-metal code with no libc.\n\n## Phase 0 — Parameters\n\nParse any free text on the invocation line (`flamenco only`, `high severity only`, `use\nhaiku`) and pre-fill what it implies. Then make **one** `AskUserQuestion` call for\nwhatever is still unresolved. Never silently default a required parameter.\n\n| Parameter | Values | Inferring it from the invocation |\n|---|---|---|\n| `threat_model` | `REMOTE` / `LOCAL_UNPRIVILEGED` / `BOTH` | \"remote\", \"network\", \"attacker\" → `REMOTE`; \"local\", \"unprivileged\" → `LOCAL_UNPRIVILEGED`; otherwise ask |\n| `worker_model` | `haiku` / `sonnet` / `opus` / `inherit` | An explicit model name. Otherwise ask. `inherit` uses the session model |\n| `severity_filter` | `all` / `medium` / `high` | \"all\", \"every\", \"noisy\" → `all`; \"medium and above\" → `medium`; \"high only\" → `high`; otherwise ask |\n| `scope_subpath` | repo-relative directory, optional | \"X only\", \"just audit X/\" → the matching subdirectory, fuzzy-matched against top-level dirs. Absent → `.`. Ambiguous → ask |\n\nTwo scopes stay separate for the whole run:\n\n- **`finding_scope_root`** = `scope_subpath` (default `.`) — a finding must live inside\n  it, and it is the tree the unit list is generated from.\n- **`context_roots`** = `.` — read freely to establish callers, build flags and\n  reachability. Narrow it to `finding_scope_root` only if the user explicitly forbids\n  wider reading, and say that reachability confidence drops when you do.\n\n## Phase 1 — Resolve paths\n\n```bash\nroot=\"${CLAUDE_PLUGIN_ROOT:-}\"\nif [ -z \"$root\" ] || [ ! -f \"$root/workflows/c-review.js\" ]; then\n  # Fallback for a cache layout that does not set the variable. ~/.claude ONLY — never `.`:\n  # `.` is the AUDITED repository, and a tree that vendors or mirrors this marketplace would\n  # win the traversal and run its copy of the scripts, with a different question set and\n  # nothing saying which copy ran. Let find's stderr through; a missing ~/.claude is a real\n  # failure to report, not noise to hide.\n  hit=\"$(find \"$HOME/.claude\" -path '*/c-review/workflows/c-review.js' -print -quit)\"\n  root=\"${hit%/workflows/c-review.js}\"\nfi\n[ -n \"$root\" ] && [ -f \"$root/workflows/c-review.js\" ] && echo \"PLUGIN ROOT: $root\"\n```\n\nStop if neither resolves, rather than running with an empty path — and say which path you\nresolved, so a copy other than the installed plugin is visible before eight agents run\nagainst it.\n\n```bash\n# The workflow cannot call Date.now(), so the timestamp is made here.\noutput_dir=\"$(pwd)/.c-review-results/$(date -u +%Y%m%dT%H%M%SZ)\"\nmkdir -p \"$output_dir\"; echo \"$output_dir\"\n\n# A Workflow script has no filesystem APIs, and `assemble_findings.py` resolves `--scope`\n# against ITS OWN cwd. Resolve it once here and pass BOTH spellings, or the workflow strips\n# `src/` from a finding's path while the assembler strips `/repo/src/`, and the two disagree\n# about which findings are duplicates of each other.\nscope_abs=\"$(cd \"${scope_subpath:-.}\" && pwd)\" || echo \"scope_subpath does not exist\"\necho \"$scope_abs\"\n```\n\n`uv` must be on PATH: Detect runs the unit enumerator and Assemble runs\n`assemble_findings.py`. If `uv` is missing, say so and stop — the whole review is\npartitioned from that unit list.\n\n## Phase 2 — Run the workflow\n\nInvoking this skill **is** the opt-in to multi-agent orchestration — call `Workflow`\nwithout asking again. A review of a real codebase also runs past any default workflow\nsize guideline; that guideline is advisory and this is the case it exempts. Do not\nshrink the fan-out to fit it, and do not substitute hand-spawned `Agent` calls.\n\nOne `Workflow` call. `scriptPath` takes the absolute path resolved in Phase 1; `args`\nmust be a real JSON object, not a JSON-encoded string.\n\n```\nWorkflow({\n  scriptPath: \"<plugin_root>/workflows/c-review.js\",\n  args: {\n    outputDir:        \"<output_dir>\",\n    pluginRoot:       \"<plugin_root>\",\n    threatModel:      \"REMOTE\",\n    severityFilter:   \"all\",\n    findingScopeRoot: \"expat/lib\",\n    findingScopeRootAbs: \"/abs/path/to/repo/expat/lib\",\n    contextRoots:     \".\",\n    workerModel:      \"sonnet\"\n  }\n})\n```\n\n`findingScopeRootAbs` is the `scope_abs` from Phase 1 and is not optional in practice:\nomitted, the workflow tells the assembler no absolute root is known and a finding filed as\n`/repo/expat/lib/xmlparse.c` stops merging with the same bug filed as `xmlparse.c`.\n\nSix further arguments are optional. Omitted, each takes its default; passed with the\nwrong TYPE, the workflow throws with the field name rather than defaulting. Pass them\nonly when the user asks or when running an evaluation:\n\n| Argument | Default | What it is for |\n|---|---|---|\n| `maxUnitLines` | `150` | Cap on a review unit; a larger function is split at syntactic seams. Raising it reintroduces the saturation the cap prevents |\n| `linesPerAgent` | `1500` | Source lines per review agent. **A no-op on a small tree** — `--agent-min` (default 4) floors the derived count, so two very different values can produce identical assignments. Use `reviewAgents` to pin the fan-out |\n| `reviewAgents` | derived | Pins the review fan-out, subject to the same floor as the derived count: both are clamped to 4–14, and an explicit value above 14 raises the cap to itself. A value below 4 is raised to 4, and a trailing slice too small to be worth an agent is folded into its neighbour, so the final count can come out one lower than asked |\n| `invariantAudit` | `false` | Adds the shared-state invariant audit to the sweep. A whole extra agent; turn it on for state-machine-heavy targets |\n| `exclude` | `[]` | Array of globs or substrings the unit enumerator skips (each becomes a repeated `--exclude`). Use when enumeration aborts naming a path it cannot own — a symlink resolving outside the scope root, an unreadable directory — and the excluded paths land in the enumerator's totals as a visible coverage hole, not silence |\n| `benchmarkMode` | `false` | **Eval-only.** Adds an external-source declaration to reviewer prompts and two schema fields. Changes no finding; leave it off for a real audit |\n\nThe workflow validates its own arguments and throws with a named field if one is\nmissing. It runs five phases:\n\n| Phase | Agents | What it does |\n|---|---|---|\n| Detect | 1 | Runs `enumerate_units.py` for the unit list; platform flags **from actual API usage**; shared-state structs; per bug class, whether any candidate site exists |\n| Review | 4–14 | One agent per contiguous slice of the unit list. Each returns findings **with severity** and a ledger row per (unit × question) |\n| Sweep | 0–2 | The class axis: one agent over every bug class with no entry anywhere that Detect did not rule out. None, and the phase is skipped. Plus the struct-field audit when `invariantAudit: true` |\n| Dedup | 0–1 | Only for collisions the assembler cannot merge deterministically. Usually skipped |\n| Assemble | 1 | Runs `assemble_findings.py`: ledger gate, deterministic merges, `findings.json`, `REPORT.md`, `REPORT.sarif` |\n\n**Around 8–10 agents on a mid-size target.**\n\n## Phase 3 — Return the report\n\n`Read <output_dir>/REPORT.md` and return it.\n\n**Say once, plainly, next to the findings: no false-positive review ran.** Every\nseverity is the reviewer's own (`severity_source: \"reviewer\"`), `judgeRan` is always\n`false`, and nothing rejected anything. Expect some of what you are shown to be wrong or\nout of scope — say so rather than presenting the list as adjudicated, and do not filter\nit yourself.\n\nThen surface, prominently and separately from the findings, anything in the workflow\nresult that means the run was partial:\n\n| Field | Meaning and what to do |\n|---|---|\n| `artifactsWritten: false` | `REPORT.md` and `REPORT.sarif` are missing; the part files under `parts/` are intact. Re-assemble by hand (below) — never reconstruct from the tool result |\n| `artifactsWritten: null` | The assemble agent returned nothing, so whether the artifacts exist is **unknown** — the command may have completed and only its structured answer failed. List the output directory before doing anything else |\n| `gateAccepted: false` with artifacts written | The failure that looks like success. Artifacts are complete; the **coverage gate** could not run or rejected the ledger, so the review is assembled and unverified. Do **not** re-run the assembler — read `ledger-gate.json` and report the gap. `artifactError` always carries the reason |\n| `coverage: null` | Coverage is **unmeasured**, not complete. Never report such a run as fully covered; point at `ledger-gate.json` |\n| `coverage` | Report `checksSatisfied` / `checksRequired`, and `checksCompleted` only as \"answered\" — never \"functions reviewed\". `checksSatisfied` below `checksCompleted` means the gate threw rows out: a coverage-*integrity* failure. Name the `violations` |\n| `groupsFailed`, `agentFailures`, `notes` | That ground was **not covered**. Do not let a clean report imply it was |\n| `unrecognisedParts` | Whole agents' output in no artifact. `null` means **unchecked, not none** |\n| `silentClasses` / `ruledOutClasses` / `platformDroppedClasses` | \"Swept and found nothing\" / \"nothing looked\" / \"out of scope by configuration\". Report separately — only the middle one means a human should look |\n\nHand re-assembly, when `artifactsWritten` is false:\n\n```\nuv run --no-project <plugin_root>/scripts/assemble_findings.py --run-dir <output_dir> \\\n  --threat-model <MODEL> --severity-filter <FILTER> --no-judge \\\n  --scope <finding_scope_root> --context-roots <context_roots> \\\n  --worker-model <worker_model> \\\n  --expect <part-stem>=<finding-count>   # one per part the workflow log names\n```\n\n- **`--expect` is not optional.** Without it the allowlist admits every file under\n  `parts/`, including one nobody dispatched, and the run exits **1** for that reason\n  alone. If you cannot recover the counts from the workflow log, exit 1 is correct and\n  the run is assembled-but-unverified.\n- **Never drop `--no-judge`.** Dropping it overwrites every reviewer severity with MEDIUM\n  and records `judge_ran: true` for a run no judge ever saw.\n- Six flags cannot be reconstructed at all (`--expect-complete`, `--benchmark-mode`,\n  `--groups-attempted`, `--groups-failed`, `--agent-failure`, `--external-source`), so\n  the document will say `agent_failures: []` on a run that may have lost a slice. Report\n  that. Without a `units.json` the assembler also exits **1**: no gate ran.\n\nFinally list the artifacts: `findings.json`, `REPORT.md`, `REPORT.sarif`, `units.json`,\n`ledger-gate.json`, `detect.json`, and the `parts/` and `assignments/` directories.\n\n## Rationalizations to Reject\n\n- **\"The run mostly worked, so I'll just present the report.\"** A failed agent is\n  uncovered ground, not a rounding error. Report it next to the findings.\n- **\"Coverage is 80%, that's basically complete.\"** The missing 20% is a list of exact\n  (unit, question) pairs in `ledger-gate.json`. Name them.\n- **\"I'll write the findings myself instead of running the workflow.\"** Hand-orchestrating\n  costs far more for worse recall. Always call `Workflow`.\n- **\"The artifacts failed, so I'll reconstruct the report from the tool result.\"** The\n  part files are on disk and the assembler is deterministic. Re-run i","tagline":"Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-fre","category":"security","tags":["agent-skill"],"author":"trailofbits","verified":false,"attribution":{"status":"registry_indexed","statusLabel":"Registry indexed","shortLabel":"REGISTRY INDEXED","sourceLabel":"recursive skill source sync","sourceDetail":"trailofbits/skills","creatorName":"trailofbits","creatorUrl":"https://github.com/trailofbits","sourceUrl":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/trailofbits-c-review#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":6844,"forks":586,"verified_installs":0,"successful_runs":0,"total_outcomes":0,"rating":0,"review_count":0,"quality_score":50.25},"quality":{"score":86,"tier":"excellent","label":"Excellent","summary":"High-confidence pick with strong adoption and healthy maintenance signals.","signals":[{"label":"GitHub stars","value":"6.8K","tone":"positive"},{"label":"Freshness","value":"11d ago","tone":"positive"},{"label":"Install ready","value":"Yes","tone":"positive"},{"label":"License","value":"CC-BY-SA-4.0","tone":"neutral"}],"warnings":[]},"trust":{"version":"trust-score-v5","score":73,"base_score":81,"outcome_confidence":0,"tier":"review","label":"Sandbox only","summary":"Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.","recommendedAction":"Run only in a sandbox and compare close alternatives before using it for real work.","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":["73/100 Trust Score v5","81/100 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":94,"weight":0.13,"status":"pass","detail":"6.8K GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":88,"weight":0.08,"status":"pass","detail":"6.8K stars, 586 forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"11d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"CC-BY-SA-4.0"},{"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":64,"weight":0.12,"status":"info","detail":"command execution surface, network or browser surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add trailofbits/skills --skill c-review"},{"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":36,"weight":0.07,"status":"fail","detail":"shell or command execution, filesystem or document access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review"},{"id":"review_status","label":"Review status","score":88,"weight":0.05,"status":"pass","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":"pass","label":"GitHub adoption","detail":"6.8K GitHub stars"},{"status":"pass","label":"Stars/forks activity","detail":"6.8K stars, 586 forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"11d since push"},{"status":"pass","label":"License clarity","detail":"CC-BY-SA-4.0"},{"status":"pass","label":"README/SKILL.md completeness","detail":"Metadata includes enough usage and workflow context"},{"status":"info","label":"Dependency/runtime risk","detail":"command execution surface, network or browser surface"},{"status":"pass","label":"Install availability","detail":"npx skills add trailofbits/skills --skill c-review"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"fail","label":"Permission surface","detail":"shell or command execution, filesystem or document access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review"},{"status":"pass","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":"pass","label":"OpenAgentSkill usage","detail":"3 views, 0 install copies"},{"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","Large GitHub adoption signal","Install command has no obvious high-risk pattern","Outcome loop is ready but needs first real agent run"],"warnings":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access","No real agent outcome reports yet","Human review required before unattended installation"],"evidence":{"stars":"6.8K GitHub stars","repoActivity":"6.8K stars, 586 forks","lastPushed":"11d since push","license":"CC-BY-SA-4.0","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","install":"npx skills add trailofbits/skills --skill c-review","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document 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 trailofbits/skills --skill c-review","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 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yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Compare alternatives before installing."},"outcome_loop":{"version":"openagentskill-agent-outcome-v4","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","source_version"],"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":["security","agent-skill"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"install_command":"npx skills add trailofbits/skills --skill c-review","trust_score":73,"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":["security","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":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"backward_compatible":{"trust_score_v4":{"version":"trust-score-v4","score":81,"tier":"strong","label":"Strong shortlist","summary":"Good trust signals with a few areas worth checking before rollout."}}},"trust_score_v5":{"version":"trust-score-v5","score":73,"base_score":81,"outcome_confidence":0,"tier":"review","label":"Sandbox only","summary":"Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.","recommendedAction":"Run only in a sandbox and compare close alternatives before using it for real work.","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":["73/100 Trust Score v5","81/100 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":94,"weight":0.13,"status":"pass","detail":"6.8K GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":88,"weight":0.08,"status":"pass","detail":"6.8K stars, 586 forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"11d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"CC-BY-SA-4.0"},{"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":64,"weight":0.12,"status":"info","detail":"command execution surface, network or browser surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add trailofbits/skills --skill c-review"},{"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":36,"weight":0.07,"status":"fail","detail":"shell or command execution, filesystem or document access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review"},{"id":"review_status","label":"Review status","score":88,"weight":0.05,"status":"pass","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":"pass","label":"GitHub adoption","detail":"6.8K GitHub stars"},{"status":"pass","label":"Stars/forks activity","detail":"6.8K stars, 586 forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"11d since push"},{"status":"pass","label":"License clarity","detail":"CC-BY-SA-4.0"},{"status":"pass","label":"README/SKILL.md completeness","detail":"Metadata includes enough usage and workflow context"},{"status":"info","label":"Dependency/runtime risk","detail":"command execution surface, network or browser surface"},{"status":"pass","label":"Install availability","detail":"npx skills add trailofbits/skills --skill c-review"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"fail","label":"Permission surface","detail":"shell or command execution, filesystem or document access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review"},{"status":"pass","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":"pass","label":"OpenAgentSkill usage","detail":"3 views, 0 install copies"},{"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","Large GitHub adoption signal","Install command has no obvious high-risk pattern","Outcome loop is ready but needs first real agent run"],"warnings":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access","No real agent outcome reports yet","Human review required before unattended installation"],"evidence":{"stars":"6.8K GitHub stars","repoActivity":"6.8K stars, 586 forks","lastPushed":"11d since push","license":"CC-BY-SA-4.0","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","install":"npx skills add trailofbits/skills --skill c-review","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document 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 trailofbits/skills --skill c-review","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","11d 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":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"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-v4","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","source_version"],"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":["security","agent-skill"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"install_command":"npx skills add trailofbits/skills --skill c-review","trust_score":73,"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":["security","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":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"backward_compatible":{"trust_score_v4":{"version":"trust-score-v4","score":81,"tier":"strong","label":"Strong shortlist","summary":"Good trust signals with a few areas worth checking before rollout."}}},"trust_score_v4":{"version":"trust-score-v4","score":81,"tier":"strong","label":"Strong shortlist","summary":"Good trust signals with a few areas worth checking before rollout.","recommendedAction":"Test in a sandbox workflow and compare its install path with close alternatives.","dimensions":[{"id":"github_adoption","label":"GitHub adoption","score":94,"weight":0.13,"status":"pass","detail":"6.8K GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":88,"weight":0.08,"status":"pass","detail":"6.8K stars, 586 forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"11d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"CC-BY-SA-4.0"},{"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":64,"weight":0.12,"status":"info","detail":"command execution surface, network or browser surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add trailofbits/skills --skill c-review"},{"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":36,"weight":0.07,"status":"fail","detail":"shell or command execution, filesystem or document access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review"},{"id":"review_status","label":"Review status","score":88,"weight":0.05,"status":"pass","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":"pass","label":"GitHub adoption","detail":"6.8K GitHub stars"},{"status":"pass","label":"Stars/forks activity","detail":"6.8K stars, 586 forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"11d since push"},{"status":"pass","label":"License clarity","detail":"CC-BY-SA-4.0"},{"status":"pass","label":"README/SKILL.md completeness","detail":"Metadata includes enough usage and workflow context"},{"status":"info","label":"Dependency/runtime risk","detail":"command execution surface, network or browser surface"},{"status":"pass","label":"Install availability","detail":"npx skills add trailofbits/skills --skill c-review"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"fail","label":"Permission surface","detail":"shell or command execution, filesystem or document access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review"},{"status":"pass","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":"pass","label":"OpenAgentSkill usage","detail":"3 views, 0 install copies"},{"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","Large GitHub adoption signal","Install command has no obvious high-risk pattern"],"warnings":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"evidence":{"stars":"6.8K GitHub stars","repoActivity":"6.8K stars, 586 forks","lastPushed":"11d since push","license":"CC-BY-SA-4.0","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","install":"npx skills add trailofbits/skills --skill c-review","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document access","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"},"installReadiness":{"ready":true,"command":"npx skills add trailofbits/skills --skill c-review","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","11d since push"]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"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":["security","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":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"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":54,"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","54/100 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"},{"id":"filesystem","label":"Filesystem access","reason":"Skill may read or write project files, documents, generated artifacts, or local workspace state.","severity":"medium"},{"id":"database","label":"Database access","reason":"Skill may inspect schemas, query databases, or work with persistent stores.","severity":"medium"}],"policy_warnings":["High-risk permission hints: Shell or command execution","Permission surface may require sandboxing"],"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","54/100 agent safety score"]},"eval":{"version":"openagentskill-skill-eval-v1","status":"failed","score":79,"risk_level":"high","decision":{"recommendation":"do_not_auto_install","reason":"Permission surface: shell or command execution, filesystem or document access","auto_install_allowed":false,"policy":"block","human_review_required":true},"blockers":["Permission surface: shell or command execution, filesystem or document access"],"warnings":["Trust score: Good trust signals with a few areas worth checking before rollout.","Audit score: Needs review","Agent safety gate: Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","High-risk permission hints: Shell or command execution","Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"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 c-review before installing it in an agent workflow","security","Local desktop workflows; Claude Code teams; teams that value GitHub adoption signals"]},{"id":"install_path","label":"Install path","status":"pass","score":92,"required_for_auto_install":true,"detail":"Install handoff is available.","evidence":["npx skills add trailofbits/skills --skill c-review"]},{"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 trailofbits/skills --skill c-review"]},{"id":"trust_score","label":"Trust score","status":"warn","score":81,"required_for_auto_install":true,"detail":"Good trust signals with a few areas worth checking before rollout.","evidence":["Strong shortlist","6.8K GitHub stars","CC-BY-SA-4.0"]},{"id":"audit_score","label":"Audit score","status":"warn","score":86,"required_for_auto_install":true,"detail":"Needs review","evidence":["Permission surface may require sandboxing"]},{"id":"agent_safety_gate","label":"Agent safety gate","status":"warn","score":54,"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":"CC-BY-SA-4.0","evidence":["CC-BY-SA-4.0"]},{"id":"recent_maintenance","label":"Recent maintenance","status":"pass","score":100,"required_for_auto_install":false,"detail":"11d since push","evidence":["11d since push"]},{"id":"permission_surface","label":"Permission surface","status":"fail","score":36,"required_for_auto_install":true,"detail":"shell or command execution, filesystem or document access","evidence":["Shell or command execution: high","Network access: medium","Filesystem 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/trailofbits-c-review/evals","api":"/api/agent/evals?slug=trailofbits-c-review","text":"/api/agent/evals?slug=trailofbits-c-review&format=text"}},"agent_readable_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"trailofbits-c-review","name":"c-review","description":"Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code.","category":"security","url":"https://www.openagentskill.com/skills/trailofbits-c-review","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","github_repo":"trailofbits/skills"},"suited_tasks":["Local desktop workflows","Claude Code teams","teams that value GitHub adoption signals","Navigate local resources","Run repeatable desktop actions","Verify file outputs","Inspect source files","Explain architecture"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add trailofbits/skills --skill c-review","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add trailofbits-c-review"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"c-review\" agent skill from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review. 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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 \"c-review\" as a Claude Code skill from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review. 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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 \"c-review\" from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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/trailofbits-c-review/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/trailofbits-c-review"},"trust":{"score":81,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"6.8K GitHub stars","repoActivity":"6.8K stars, 586 forks","lastPushed":"11d since push","license":"CC-BY-SA-4.0","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","install":"npx skills add trailofbits/skills --skill c-review","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document 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":["security","agent-skill"],"known_risks":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"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":86,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"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":86,"label":"Excellent"},"supply":{"track":"Coding and developer agents","scenario":"Coding agents","maintenance":"11d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","high-compliance environments without internal security review","No major risk signals from current metadata","High-risk permission hints: Shell or command execution","Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"agent_contract":{"task_input":"Use c-review 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: 81/100 Strong shortlist","Audit: 86/100 Needs review","Safety: 54/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"trailofbits-c-review (c-review)","install_command":"npx skills add trailofbits/skills --skill c-review","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":"trailofbits-c-review","task":"Use c-review 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/trailofbits-c-review","api":"https://www.openagentskill.com/api/agent/skills/trailofbits-c-review","audit":"https://www.openagentskill.com/skills/trailofbits-c-review/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=trailofbits-c-review&task=Use%20c-review%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20c-review%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20c-review%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/trailofbits-c-review/install","manifest":"https://www.openagentskill.com/api/registry/manifest/trailofbits-c-review"}},"machine_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"trailofbits-c-review","name":"c-review","description":"Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code.","category":"security","url":"https://www.openagentskill.com/skills/trailofbits-c-review","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","github_repo":"trailofbits/skills"},"suited_tasks":["Local desktop workflows","Claude Code teams","teams that value GitHub adoption signals","Navigate local resources","Run repeatable desktop actions","Verify file outputs","Inspect source files","Explain architecture"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add trailofbits/skills --skill c-review","ready":true,"targets":[{"id":"openagentskill-cli","label":"CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add trailofbits-c-review"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"c-review\" agent skill from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review. 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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 \"c-review\" as a Claude Code skill from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review. 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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 \"c-review\" from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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/trailofbits-c-review/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/trailofbits-c-review"},"trust":{"score":81,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"6.8K GitHub stars","repoActivity":"6.8K stars, 586 forks","lastPushed":"11d since push","license":"CC-BY-SA-4.0","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","install":"npx skills add trailofbits/skills --skill c-review","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution, filesystem or document 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":["security","agent-skill"],"known_risks":["Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"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":86,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"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":86,"label":"Excellent"},"supply":{"track":"Coding and developer agents","scenario":"Coding agents","maintenance":"11d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","high-compliance environments without internal security review","No major risk signals from current metadata","High-risk permission hints: Shell or command execution","Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"],"agent_contract":{"task_input":"Use c-review 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: 81/100 Strong shortlist","Audit: 86/100 Needs review","Safety: 54/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"trailofbits-c-review (c-review)","install_command":"npx skills add trailofbits/skills --skill c-review","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":"trailofbits-c-review","task":"Use c-review 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/trailofbits-c-review","api":"https://www.openagentskill.com/api/agent/skills/trailofbits-c-review","audit":"https://www.openagentskill.com/skills/trailofbits-c-review/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=trailofbits-c-review&task=Use%20c-review%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20c-review%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20c-review%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/trailofbits-c-review/install","manifest":"https://www.openagentskill.com/api/registry/manifest/trailofbits-c-review"}},"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":"local-desktop","title":"Local desktop"},{"slug":"coding-agents","title":"Coding agents"},{"slug":"research-agents","title":"Research agents"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add trailofbits/skills --skill c-review","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":6844,"starsLabel":"6.8K","forks":586,"license":"CC-BY-SA-4.0","qualityScore":86,"trustScore":81,"auditScore":86},"maintenance":{"status":"fresh","label":"11d since push","daysSincePush":11,"lastPushedAt":"2026-08-25T13:19:32+00:00"},"risk":{"level":"needs_review","label":"Needs review","requiresReview":true,"notes":["Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access","Needs review"]},"coverageTags":["Coding","Coding agents","security","agent-skill"]},"audit":{"audit_score":86,"risk_level":"needs_review","risk_label":"Needs review","quality_score":86,"trust_score":81,"maintenance_score":100,"security_score":80,"install_score":92,"warnings":["Permission surface may require sandboxing","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Permission surface: shell or command execution, filesystem or document access"]},"quality_signals":{"model":"v2","star_score":26.85,"usage_score":0,"review_score":5.4,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code"],"use_cases":[{"slug":"local-desktop","title":"Local desktop","url":"https://www.openagentskill.com/use-cases/local-desktop"},{"slug":"coding-agents","title":"Coding agents","url":"https://www.openagentskill.com/use-cases/coding-agents"},{"slug":"research-agents","title":"Research agents","url":"https://www.openagentskill.com/use-cases/research-agents"},{"slug":"github-automation","title":"GitHub automation","url":"https://www.openagentskill.com/use-cases/github-automation"}],"stacks":[{"slug":"coding-review-agent","title":"Coding review agent","url":"https://www.openagentskill.com/collections/coding-review-agent"},{"slug":"research-report-agent","title":"Research report agent","url":"https://www.openagentskill.com/collections/research-report-agent"},{"slug":"rag-knowledge-base","title":"RAG knowledge base","url":"https://www.openagentskill.com/collections/rag-knowledge-base"}],"install":"npx skills add trailofbits/skills --skill c-review","install_targets":[{"id":"openagentskill-cli","label":"CLI","title":"OpenAgentSkill CLI","kind":"command","value":"npx --yes https://github.com/Leon-Drq/openagentskill/releases/download/cli-v0.3.0/openagentskill-0.3.0.tgz add trailofbits-c-review","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 \"c-review\" agent skill from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review. 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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 \"c-review\" as a Claude Code skill from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review. 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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 \"c-review\" from https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review 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: Performs comprehensive C/C++ security review for memory corruption, integer overflows, race conditions, and platform-specific vulnerabilities. Use when auditing native C/C++ applications, reviewing daemons or services for memory safety, or hunting integer overflow / use-after-free / race conditions in userspace code. 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\":\"trailofbits-c-review\",\"task\":\"Install c-review\",\"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/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","github_repo":"trailofbits/skills","version":"1.0.0","license":"CC-BY-SA-4.0","urls":{"web":"https://www.openagentskill.com/skills/trailofbits-c-review","repository":"https://github.com/trailofbits/skills/tree/main/plugins/c-review/skills/c-review","api":"/api/agent/skills/trailofbits-c-review","install_api":"/api/skills/trailofbits-c-review/install"},"meta":{"created_at":"2026-08-25T13:24:23.236983+00:00","updated_at":"2026-09-01T11:59:28.941454+00:00","agent_friendly":true}}