{"slug":"margelo-build-nitro-modules","name":"build-nitro-modules","description":"Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape.","long_description":"---\nname: build-nitro-modules\ndescription: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape.\nlicense: MIT\nmetadata:\n  author: margelo\n  tags: react-native, nitro-modules, nitrogen, hybrid-object, api-design, swift, kotlin, c++, monorepo, native-modules, codegen\n---\n\n# Build Nitro Modules\n\n## Overview\n\nEnd-to-end skill for building a React Native Nitro Module: monorepo scaffolding via Nitrogen, TypeScript HybridObject spec authoring, native code generation, platform implementation (C++/Swift/Kotlin), example app wiring, and publish preparation.\n\nNitro Modules use a codegen pipeline (`nitrogen`) that reads `.nitro.ts` spec files and generates native C++/Swift/Kotlin boilerplate. You then fill in the implementation. This is fundamentally different from old-style turbo modules.\n\nGenerated files under `nitrogen/generated/` are outputs. Change the `.nitro.ts` spec or native implementation source, then re-run nitrogen instead of manually editing generated files. These files can be committed to git, and many Nitro libraries do commit them, but the repo policy can choose otherwise. They must be included in the npm package so consumers can build the native library.\n\n## Pair With API Design\n\nUse `api-design` first when shaping the public TypeScript, JavaScript, React, or React Native API. This skill adds the Nitro-specific constraints: HybridObject state, generated specs, native resource ownership, zero-copy data, threading, platform implementation, codegen, and real-device validation.\n\nLet `api-design` own general public API rules and API freshness checks. In this skill, only add Nitro-specific freshness checks for mobile toolchain and generated-template decisions: verify current Nitro, React Native, Gradle, Xcode, Swift, Kotlin, NDK, and package-tooling docs/source before choosing versions, config fields, or native implementation details.\n\nIf the user is building a JS-only React or React Native library, do not apply this skill unless Nitro, HybridObjects, native modules, codegen, C++/Swift/Kotlin bindings, or `react-native-nitro-modules` are part of the task.\n\nPair with `swift` when implementing or reviewing Swift-backed HybridObjects, AVFoundation/session code, DispatchQueue usage, Swift concurrency, or thread-affine Swift state. Pair with `kotlin` when implementing or reviewing Kotlin-backed HybridObjects, Android threading, coroutines, Kotlin nullability, sealed result models, or Android service access. Pair with `cpp` when implementing or reviewing C++-backed HybridObjects, shared native engines, CMake, RAII ownership, or generated C++ spec bindings.\n\n## Repo and Release References\n\nLoad [repo-structure-and-workflow.md][repo-structure-and-workflow] only when creating a repo, reorganizing layout, adding examples/docs/CI, or changing workflow policy.\n\nLoad [release-it-publishing.md][release-it-publishing] only when setting up or reviewing `bun release` / `release-it`.\n\n## Nitro API Design Rules\n\n- Prefer Nitro Modules over TurboModules or handwritten JSI for native module work. Nitro is usually faster and safer because it avoids many raw JSI lifetime, threading, and runtime-destruction hazards. Use raw JSI only when Nitro's Raw JSI Methods are required.\n- Keep the root HybridObject default-constructible for autolinking. Create argument-dependent objects through factory methods.\n- Use HybridObjects for native state: native resources, prewarmed engines, files, images, databases, sensor sessions, streams, and other stateful objects.\n- If native setup is required, make the factory method async and resolve with a ready HybridObject, such as `createCameraSession(...): Promise<CameraSession>`.\n- One JS-facing HybridObject spec can have multiple native concrete classes implementing the generated spec. Use this to hide backend strategies behind one TypeScript type, for example `CameraVideoOutput` backed by either a movie-file output or a video-data-output plus asset writer. Factories choose the native implementation and return the shared spec type.\n- Use a product/domain noun for the exported JS factory object, not the generated spec type name. For example, export `VisionCamera = createHybridObject<CameraFactory>('CameraFactory')` or `Images = createHybridObject<ImageFactory>('ImageFactory')`. This avoids collisions with `CameraFactory`/`ImageFactory` types without mechanically lowercasing them or adding `Hybrid` prefixes.\n- Keep each HybridObject scoped to one purpose or lifecycle.\n- Do not choose HybridObject boundaries only by domain noun. A one-shot command, an app-owned live session, a native view, and a long-lived engine are different contracts even when they belong to the same feature area.\n- Split returned HybridObjects by stable semantic capability when their options, results, lifecycle, or future platform support differ. For example, a root `DataScannerFactory` can expose `createBarcodeScanner()` and `createTextScanner()` instead of one broad scanner whose text fields are nullable because Android currently supports only barcodes.\n- It is valid for a factory to report `isTextScannerAvailable: false` or reject `createTextScanner()` on platforms that do not support that capability today. Future platform support should fill in the existing capability and flip availability to true, not require redesigning a fat HybridObject.\n- Platform-specific capabilities can still be first-class HybridObjects when the concept is stable. For example, an iOS-only `CameraObjectOutput` can extend a shared `CameraOutput`, be marked `@platform iOS`, and reject at `createObjectOutput(...)` on Android instead of adding object-scanning nullable fields to every output.\n- Use factory methods to separate workflows and make returned HybridObjects stronger. If `createLiveScanner()` returns a live scanner session, baseline session operations that the implementation controls should be guaranteed by that type. Backends that cannot provide the live workflow should fail creation or return a narrower object, not force the live object to expose dead methods, nullable baseline properties, or repeated `can*` checks.\n- Return configured handles to avoid stale state. If `configure(...)` binds a device, output, stream, or native graph, return a new HybridObject handle for commands that only make sense for that configured resource. For example, a `CameraSession.configure(...)` method should return `CameraController` handles for `setZoom(...)` and `focusTo(...)` instead of putting those methods on `CameraSession` with implicit \"current device\" state.\n- Reconfiguration should replace or invalidate handles whose native target changed. Do not keep commands on a broad parent HybridObject when the command target depends on the last successful configuration.\n- For native negotiation, model requested intent separately from resolved state. Use ranked constraints or preferences as input, then return or emit a resolved config HybridObject/struct that describes what the session actually selected. Provide an explicit resolver method when callers need to preview the result without creating or starting the native session.\n- Use capability fields for workflow discovery, optional preferences, and genuinely variable support. Do not use capabilities to paper over an oversized HybridObject whose methods are unsupported during normal use on a supported backend.\n- Treat HybridObjects as primary API objects. Each primary HybridObject gets its own `.nitro.ts` file.\n- Keep an inheritance family in one `.nitro.ts` file only when the file is named after the base HybridObject and child HybridObjects add few or no members, such as `ScannedCode`, `ScannedBarcode`, and `ScannedQRCode` in `ScannedCode.nitro.ts`.\n- Put named codegen types in their own `.ts` files: string-literal unions/enums, structs/interfaces, option objects, event objects, callback option structs, and helper types. Nitro needs names for generated native structs and enum-like values. Import them into `.nitro.ts` specs and re-export public types from `src/index.ts`.\n- Inline simple function callbacks in method signatures, for example `addErrorListener(listener: (error: Error) => void): ListenerSubscription`. Do not create one-off aliases such as `ScannerErrorListener` unless the function type is reused as a public concept across multiple APIs.\n- Group multiple helper types in one file only when they form one tightly coupled logical construct, such as `DynamicRange` plus the exact literal unions that define it.\n- Use HybridObject inheritance for shared native state plus specialized result shapes. Put shared properties such as IDs, bounds, raw values, formats, and value types on the base object instead of repeating them on every subtype.\n- Use HybridObject inheritance for heterogeneous native result families. Example: `ScannedItem` owns common state and methods, while `ScannedBarcode`, `ScannedQRCode`, and `ScannedFace` extend it with specialized properties. APIs can return `ScannedItem[]`; JS narrows by a discriminator property, and native code can accept the generated base spec when it only needs common behavior.\n- Do not model state families as one Nitro struct or HybridObject with every subtype field nullable. Use HybridObject inheritance, discriminated unions, or platform protocol/interface conformance so relationships such as `barcode` plus `barcodeType` are compile-time safe.\n- Treat public Nitro HybridObjects as the imperative API. Export the generated Nitro API 1:1 when it is intended for users; do not add JS wrappers that pre-parse values, translate strings/enums, reshape options, inject hidden defaults, or call a different internal method shape than the `.nitro.ts` spec exposes.\n- JS/TS layers are appropriate for intentionally higher-level APIs such as React hooks, React components, UI composition helpers, or when the HybridObject is only an internal implementation detail and does not match the user-facing mental model. In those cases, keep the boundary explicit: the wrapper is the public API and the Nitro object is internal.\n- Autolink only public roots, factories, views, or global utilities that JS must construct directly. Other HybridObjects can be returned from factory methods and do not need their own `nitro.json` autolinking entries. Do not autolink every concrete native implementation of the same JS-facing spec.\n- For native extension points, pair a JS-facing base HybridObject spec with a public native protocol/interface. The base spec lets JS pass the object through typed APIs; the native protocol/interface exposes platform-specific handles and behavior for first-party and third-party native code.\n- When accepting an extensible HybridObject from JS, accept the generated base spec type, then cast to the native protocol/interface on the native side and throw a clear error if it does not conform. This keeps JS portable while native integrations stay strongly typed.\n- Use Nitro structs for domain shapes, option groups, and same-type parameter clusters. Do not wrap unrelated hot-path values in a struct only to reduce argument count; Nitro eagerly converts structs, so unnecessary wrappers can be slower than explicit parameters.\n- Remember that TypeScript optional fields become native optionals (`T?` / `std::optional<T>`) in generated Swift, Kotlin, and C++. Use optional Nitro fields only when absence is part of the intended public/native contract, not because a JS wrapper will translate them away.\n- Prefer the Nitro method's generated structs to be the real public input shape. If defaults or resolved options are ","tagline":"Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or ","category":"research","tags":["agent-skill"],"author":"margelo","verified":false,"attribution":{"status":"registry_indexed","statusLabel":"Registry indexed","shortLabel":"REGISTRY INDEXED","sourceLabel":"recursive skill source sync","sourceDetail":"margelo/react-native-skills","creatorName":"margelo","creatorUrl":"https://github.com/margelo","sourceUrl":"https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/margelo-build-nitro-modules#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":161,"forks":7,"verified_installs":0,"successful_runs":0,"total_outcomes":0,"rating":0,"review_count":0,"quality_score":39.17},"quality":{"score":69,"tier":"promising","label":"Promising","summary":"Useful candidate, but compare it with alternatives before adopting.","signals":[{"label":"GitHub stars","value":"161","tone":"neutral"},{"label":"Freshness","value":"1d ago","tone":"positive"},{"label":"Install ready","value":"Yes","tone":"positive"},{"label":"License","value":"MIT","tone":"neutral"}],"warnings":[]},"trust":{"version":"trust-score-v5","score":70,"base_score":78,"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":["70/100 Trust Score v5","78/100 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":62,"weight":0.13,"status":"info","detail":"161 GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":51,"weight":0.08,"status":"warn","detail":"161 stars, 7 forks; 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require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Stars/forks activity: 161 stars, 7 forks; issue activity unavailable in current metadata","Permission surface: shell or command execution, filesystem or document access","No real agent outcome reports yet","Human review required before unattended installation"],"evidence":{"stars":"161 GitHub stars","repoActivity":"161 stars, 7 forks","lastPushed":"1d since push","license":"MIT","repository":"https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules","install":"npx skills add margelo/react-native-skills --skill build-nitro-modules","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 margelo/react-native-skills --skill build-nitro-modules","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","Financial domain: human review is required before use in a live investment workflow.","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":["Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Stars/forks activity: 161 stars, 7 forks; issue activity unavailable in current metadata","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-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":["research","agent-skill"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"install_command":"npx skills add margelo/react-native-skills --skill build-nitro-modules","trust_score":70,"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","Autonomous investment, trading, tax, or suitability decisions without a qualified human review"],"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":["research","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","Autonomous investment, trading, tax, or suitability decisions without a qualified human review"],"knownRisks":["Financial research output is not financial advice; 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require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Stars/forks activity: 161 stars, 7 forks; issue activity unavailable in current metadata","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-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":["research","agent-skill"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"install_command":"npx skills add margelo/react-native-skills --skill build-nitro-modules","trust_score":70,"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","Autonomous investment, trading, tax, or suitability decisions without a qualified human review"],"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":["research","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","Autonomous investment, trading, tax, or suitability decisions without a qualified human review"],"knownRisks":["Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Stars/forks activity: 161 stars, 7 forks; issue activity unavailable in current metadata","Permission surface: shell or command execution, filesystem or document access"],"backward_compatible":{"trust_score_v4":{"version":"trust-score-v4","score":78,"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":78,"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":62,"weight":0.13,"status":"info","detail":"161 GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":51,"weight":0.08,"status":"warn","detail":"161 stars, 7 forks; 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require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Stars/forks activity: 161 stars, 7 forks; issue activity unavailable in current metadata","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":49,"level":"avoid_auto_install","label":"Avoid automatic install","safety_tier":{"tier":"experimental","label":"Experimental","badge":"EXPERIMENTAL","summary":"Sparse or mixed signals. 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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":"fail","score":48,"required_for_auto_install":true,"detail":"shell or command execution, filesystem or document access","evidence":["Shell or command execution: high","Browser automation: medium","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/margelo-build-nitro-modules/evals","api":"/api/agent/evals?slug=margelo-build-nitro-modules","text":"/api/agent/evals?slug=margelo-build-nitro-modules&format=text"}},"agent_readable_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"margelo-build-nitro-modules","name":"build-nitro-modules","description":"Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. 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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 \"build-nitro-modules\" as a Claude Code skill from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules. 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"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 \"build-nitro-modules\" from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"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/margelo-build-nitro-modules/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/margelo-build-nitro-modules"},"trust":{"score":78,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"161 GitHub stars","repoActivity":"161 stars, 7 forks","lastPushed":"1d since push","license":"MIT","repository":"https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules","install":"npx skills add margelo/react-native-skills --skill build-nitro-modules","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":["research","agent-skill"],"known_risks":["Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Stars/forks activity: 161 stars, 7 forks; issue activity unavailable in current metadata","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. 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issue activity unavailable in current metadata","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":69,"label":"Promising"},"supply":{"track":"Research and knowledge work","scenario":"Research agents","maintenance":"1d 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","Financial research output is not financial advice; require human review before any live investment decision","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review"],"agent_contract":{"task_input":"Use build-nitro-modules 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: 78/100 Strong shortlist","Audit: 81/100 Needs review","Safety: 49/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"margelo-build-nitro-modules (build-nitro-modules)","install_command":"npx skills add margelo/react-native-skills --skill build-nitro-modules","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":"margelo-build-nitro-modules","task":"Use build-nitro-modules 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/margelo-build-nitro-modules","api":"https://www.openagentskill.com/api/agent/skills/margelo-build-nitro-modules","audit":"https://www.openagentskill.com/skills/margelo-build-nitro-modules/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=margelo-build-nitro-modules&task=Use%20build-nitro-modules%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20build-nitro-modules%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20build-nitro-modules%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/margelo-build-nitro-modules/install","manifest":"https://www.openagentskill.com/api/registry/manifest/margelo-build-nitro-modules"}},"machine_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"margelo-build-nitro-modules","name":"build-nitro-modules","description":"Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape.","category":"research","url":"https://www.openagentskill.com/skills/margelo-build-nitro-modules","repository":"https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules","github_repo":"margelo/react-native-skills"},"suited_tasks":["Research agents workflows","Claude Code teams","builders willing to evaluate younger projects","Search sources","Extract claims","Synthesize findings","Move data between tools","Transform files"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add margelo/react-native-skills --skill build-nitro-modules","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 margelo-build-nitro-modules"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"build-nitro-modules\" agent skill from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules. 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"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 \"build-nitro-modules\" as a Claude Code skill from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules. 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"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 \"build-nitro-modules\" from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"agent\":\"cursor\",\"outcome\":\"success\",\"install_used\":true}. Replace event_id with a unique value and outcome with success or failed. 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issue activity unavailable in current metadata","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":69,"label":"Promising"},"supply":{"track":"Research and knowledge work","scenario":"Research agents","maintenance":"1d 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","Financial research output is not financial advice; require human review before any live investment decision","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review"],"agent_contract":{"task_input":"Use build-nitro-modules 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: 78/100 Strong shortlist","Audit: 81/100 Needs review","Safety: 49/100 Avoid automatic install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"margelo-build-nitro-modules (build-nitro-modules)","install_command":"npx skills add margelo/react-native-skills --skill build-nitro-modules","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":"margelo-build-nitro-modules","task":"Use build-nitro-modules 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/margelo-build-nitro-modules","api":"https://www.openagentskill.com/api/agent/skills/margelo-build-nitro-modules","audit":"https://www.openagentskill.com/skills/margelo-build-nitro-modules/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=margelo-build-nitro-modules&task=Use%20build-nitro-modules%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20build-nitro-modules%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20build-nitro-modules%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/margelo-build-nitro-modules/install","manifest":"https://www.openagentskill.com/api/registry/manifest/margelo-build-nitro-modules"}},"supply_profile":{"track":{"slug":"research","label":"Research and knowledge work","shortLabel":"Research","description":"Deep research, source comparison, literature review, RAG, knowledge search, and reports."},"scenario":{"label":"Research agents","description":"I need my agent to research a topic, compare sources, and produce a concise report.","useCases":[{"slug":"research-agents","title":"Research agents"},{"slug":"workflow-automation","title":"Workflow automation"},{"slug":"github-automation","title":"GitHub automation"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add margelo/react-native-skills --skill build-nitro-modules","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":161,"starsLabel":"161","forks":7,"license":"MIT","qualityScore":69,"trustScore":78,"auditScore":81},"maintenance":{"status":"fresh","label":"1d since push","daysSincePush":1,"lastPushedAt":"2026-08-21T15:16:33+00:00"},"risk":{"level":"needs_review","label":"Needs review","requiresReview":true,"notes":["Permission surface may require sandboxing","Financial research output is not financial advice; require human review before any live investment decision","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access"]},"coverageTags":["Research","Research agents","agent-skill"]},"audit":{"audit_score":81,"risk_level":"needs_review","risk_label":"Needs review","quality_score":69,"trust_score":78,"maintenance_score":100,"security_score":83,"install_score":92,"warnings":["Permission surface may require sandboxing","Financial research output is not financial advice; require human review before any live investment decision","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review","Permission surface needs review: shell or command execution, filesystem or document access","Stars/forks activity: 161 stars, 7 forks; issue activity unavailable in current metadata","Permission surface: shell or command execution, filesystem or document access"]},"quality_signals":{"model":"v2","star_score":15.47,"usage_score":0,"review_score":5.7,"metadata_score":3,"freshness_score":15},"platforms":["Claude Code"],"use_cases":[{"slug":"research-agents","title":"Research agents","url":"https://www.openagentskill.com/use-cases/research-agents"},{"slug":"workflow-automation","title":"Workflow automation","url":"https://www.openagentskill.com/use-cases/workflow-automation"},{"slug":"github-automation","title":"GitHub automation","url":"https://www.openagentskill.com/use-cases/github-automation"},{"slug":"multimodal-media","title":"Multimodal media","url":"https://www.openagentskill.com/use-cases/multimodal-media"}],"stacks":[{"slug":"research-report-agent","title":"Research report agent","url":"https://www.openagentskill.com/collections/research-report-agent"},{"slug":"coding-review-agent","title":"Coding review agent","url":"https://www.openagentskill.com/collections/coding-review-agent"},{"slug":"browser-qa-agent","title":"Browser QA agent","url":"https://www.openagentskill.com/collections/browser-qa-agent"}],"install":"npx skills add margelo/react-native-skills --skill build-nitro-modules","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 margelo-build-nitro-modules","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 \"build-nitro-modules\" agent skill from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules. 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"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 \"build-nitro-modules\" as a Claude Code skill from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules. 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"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 \"build-nitro-modules\" from https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules 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: Builds and designs React Native Nitro Modules with Nitrogen, HybridObject TypeScript specs, Nitro View components, generated native implementations, zero-copy and native-state APIs, Swift/Kotlin/C++ bindings, example apps, and testing. Use when creating a Nitro Module, adding or reviewing HybridObjects, building a Nitro View (HybridView) component, designing Nitro-specific public APIs, implementing native functionality, or setting up the nitrogen codegen pipeline. Pair with api-design for general library API shape. 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\":\"margelo-build-nitro-modules\",\"task\":\"Install build-nitro-modules\",\"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/margelo/react-native-skills/tree/main/skills/build-nitro-modules","github_repo":"margelo/react-native-skills","version":"1.0.0","license":"MIT","urls":{"web":"https://www.openagentskill.com/skills/margelo-build-nitro-modules","repository":"https://github.com/margelo/react-native-skills/tree/main/skills/build-nitro-modules","api":"/api/agent/skills/margelo-build-nitro-modules","install_api":"/api/skills/margelo-build-nitro-modules/install"},"meta":{"created_at":"2026-08-21T15:35:26.558223+00:00","updated_at":"2026-08-21T15:35:26.558223+00:00","agent_friendly":true}}