{"query":"api-and-interface-design","filters":{"category":null,"platform":null,"track":null,"safety":null,"include_blocked":false,"min_stars":0},"total":1,"skills":[{"rank":1,"match_type":"exact","match_score":99,"raw_match_score":1319.4,"semantic_relevance":100,"ranking_signals":{"retrieval":1283,"semantic":100,"quality":14.4,"projectPopularity":22,"verifiedOutcomes":0,"verifiedSource":0},"slug":"addyosmani-api-and-interface-design","name":"api-and-interface-design","description":"Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.","tagline":"Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.","category":"design-creative","tags":["agent-skill"],"author":{"name":"addyosmani","verified":false,"url":"https://github.com/addyosmani"},"attribution":{"status":"registry_indexed","statusLabel":"Registry indexed","shortLabel":"REGISTRY INDEXED","sourceLabel":"recursive skill source sync","sourceDetail":"addyosmani/agent-skills","creatorName":"addyosmani","creatorUrl":"https://github.com/addyosmani","sourceUrl":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/addyosmani-api-and-interface-design#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":92201,"forks":9827,"verified_installs":0,"install_attempts":0,"successful_runs":0,"total_outcomes":0,"downloads":0,"rating":0,"review_count":0,"quality_score":57.55},"quality":{"score":95,"tier":"excellent","label":"Excellent","summary":"High-confidence pick with strong adoption and healthy maintenance signals.","signals":[{"label":"GitHub stars","value":"92K","tone":"positive"},{"label":"Freshness","value":"3d ago","tone":"positive"},{"label":"Install ready","value":"Yes","tone":"positive"},{"label":"License","value":"MIT","tone":"neutral"}],"warnings":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice."]},"trust":{"version":"trust-score-v4","score":74,"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":100,"weight":0.13,"status":"pass","detail":"92K GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":100,"weight":0.08,"status":"pass","detail":"92K stars, 9.8K forks; issue activity unavailable in current metadata"},{"id":"maintenance","label":"Recent maintenance","score":100,"weight":0.14,"status":"pass","detail":"3d since push"},{"id":"license","label":"License clarity","score":86,"weight":0.09,"status":"pass","detail":"MIT"},{"id":"documentation","label":"README/SKILL.md completeness","score":52,"weight":0.14,"status":"warn","detail":"Public metadata needs stronger README/SKILL.md context"},{"id":"dependency_risk","label":"Dependency/runtime risk","score":82,"weight":0.12,"status":"pass","detail":"network or browser surface"},{"id":"installability","label":"Install availability","score":92,"weight":0.1,"status":"pass","detail":"npx skills add addyosmani/agent-skills --skill api-and-interface-design"},{"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":86,"weight":0.07,"status":"pass","detail":"network or browser access"},{"id":"repository","label":"Repository evidence","score":86,"weight":0.04,"status":"pass","detail":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design"},{"id":"review_status","label":"Review status","score":66,"weight":0.05,"status":"info","detail":"AI review data available"},{"id":"agent_outcomes","label":"Agent Proven outcomes","score":54,"weight":0.13,"status":"info","detail":"No agent outcome data yet"}],"checks":[{"status":"pass","label":"GitHub adoption","detail":"92K GitHub stars"},{"status":"pass","label":"Stars/forks activity","detail":"92K stars, 9.8K forks; issue activity unavailable in current metadata"},{"status":"pass","label":"Recent maintenance","detail":"3d since push"},{"status":"pass","label":"License clarity","detail":"MIT"},{"status":"warn","label":"README/SKILL.md completeness","detail":"Public metadata needs stronger README/SKILL.md context"},{"status":"pass","label":"Dependency/runtime risk","detail":"network or browser surface"},{"status":"pass","label":"Install availability","detail":"npx skills add addyosmani/agent-skills --skill api-and-interface-design"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"pass","label":"Permission surface","detail":"network or browser access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design"},{"status":"info","label":"Review status","detail":"AI review data available"},{"status":"info","label":"Agent Proven outcomes","detail":"No agent outcome data yet"},{"status":"warn","label":"Ownership","detail":"No approved owner claim yet"},{"status":"info","label":"OpenAgentSkill usage","detail":"No local usage activity yet"},{"status":"info","label":"Agent outcomes","detail":"No agent outcome data yet"}],"strengths":["AI review approved","Install path is available","Repository evidence is available","Recently maintained repository","Large GitHub adoption signal","Install command has no obvious high-risk pattern"],"warnings":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","Documentation summary is thin","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context"],"evidence":{"stars":"92K GitHub stars","repoActivity":"92K stars, 9.8K forks","lastPushed":"3d since push","license":"MIT","repository":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design","install":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","installSafety":"standard package or runtime install path","permissionSurface":"network or browser access","documentation":"Thin public metadata","agentOutcomes":"No agent outcome data yet"},"installReadiness":{"ready":true,"command":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","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","3d since push"]},"agentCompatibility":["Codex","Claude Code","Cursor","OpenAgentSkill CLI"],"riskSummary":{"level":"medium","label":"Review before production","notes":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","Documentation summary is thin","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context"]},"outcomeEvidence":{"total":0,"successes":0,"failures":0,"notRelevant":0,"successRate":null,"installAttempts":0,"riskBlocked":0,"setupRequired":0,"installSuccessRate":null,"avgOutputQuality":null,"avgTimeToUsefulMs":null,"productionOutcomes":0,"humanReviewRequired":0,"recentSuccessRate":null,"recentFailureRate":null,"uniqueAgents":0,"agentProvenScore":0,"agentProvenLabel":"Needs first agent run","lastOutcomeAt":null,"label":"No agent outcome data yet"},"autoInstall":{"allowed":false,"sandboxRequired":true,"policy":"human_review_before_install","reason":"Human review or sandbox validation is required before automatic installation."},"bestFor":["design-creative","agent-skill"],"doNotUseFor":["Production credentials, payments, or irreversible account changes without explicit human review","Sensitive private data before reviewing repository code, license, and permission surface","Automatic installation in a production workspace"],"knownRisks":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","Documentation summary is thin","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context"]},"safety":{"score":75,"level":"review_before_install","label":"Review before install","safety_tier":{"tier":"reviewed","label":"Reviewed with permission notes","badge":"REVIEWED","summary":"Usable candidate, but the agent should surface permission and audit notes before installation.","recommended_action":"Require human approval before installing into a real workspace.","auto_install_policy":"review","reasons":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","75/100 agent safety score"]},"auto_install_allowed":false,"human_review_required":true,"blocked":false,"audit_risk":"needs_review","permission_hints":[{"id":"network","label":"Network access","reason":"Skill likely fetches remote pages, APIs, repositories, or external services.","severity":"medium"}],"policy_warnings":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice."],"constraints_applied":{"max_risk":"medium","needs_install_command":true,"min_stars":0}},"safety_gate":{"tier":"reviewed","label":"Reviewed with permission notes","badge":"REVIEWED","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Require human approval before installing into a real workspace.","reasons":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","75/100 agent safety score"]},"supply_profile":{"track":{"slug":"design","label":"Design and creative production","shortLabel":"Design","description":"Design assets, images, video, audio, multimodal media, presentation, and creative production skills."},"scenario":{"label":"Design and creative","description":"I need my agent to produce design assets, UI directions, presentations, or creative media workflows.","useCases":[{"slug":"design-creative","title":"Design and creative"},{"slug":"browser-automation","title":"Browser automation"},{"slug":"document-processing","title":"Document processing"}]},"applicableAgents":["Claude Code","CLI","Codex","Cursor"],"install":{"ready":true,"command":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","primaryTarget":"CLI","targetCount":4},"githubQuality":{"stars":92201,"starsLabel":"92K","forks":9827,"license":"MIT","qualityScore":95,"trustScore":74,"auditScore":87},"maintenance":{"status":"fresh","label":"3d since push","daysSincePush":3,"lastPushedAt":"2026-09-04T06:45:55+00:00"},"risk":{"level":"needs_review","label":"Needs review","requiresReview":true,"notes":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","No 'When not to use' or 'Limitations' section; the skill may be over-applied to internal implementation details where rigid API contract practices are unnecessary.","The cross-reference to 'deprecation-and-migration' is not included, which could be a broken reference if that skill is not available in the target environment.","The provided excerpt cuts off in the 'Prefer Addition Over Modification' section; the submitted SKILL.md should be verified to ensure all sections are complete.","Documentation summary is thin"]},"coverageTags":["Design","Design and creative","design-creative","agent-skill"]},"audit":{"audit_score":87,"risk_level":"needs_review","risk_label":"Needs review","warnings":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","No 'When not to use' or 'Limitations' section; the skill may be over-applied to internal implementation details where rigid API contract practices are unnecessary.","The cross-reference to 'deprecation-and-migration' is not included, which could be a broken reference if that skill is not available in the target environment.","The provided excerpt cuts off in the 'Prefer Addition Over Modification' section; the submitted SKILL.md should be verified to ensure all sections are complete.","Documentation summary is thin"]},"decision":{"readiness_score":100,"readiness_label":"Production-ready","headline":"Primary pick for Design and creative","role":"Primary pick","primary_fit":"Design and creative","best_for":["Design and creative workflows","Claude Code teams","teams that value GitHub adoption signals"],"risks":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","No OpenAgentSkill engagement data yet"],"next_steps":["Install it in a sandbox agent and run one Design and creative task end to end.","Compare output quality, latency, and failure behavior against at least one alternative.","Promote it into production only after reviewing repository permissions, license, and maintenance signals."]},"agent_readable_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"addyosmani-api-and-interface-design","name":"api-and-interface-design","description":"Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.","category":"design-creative","url":"https://www.openagentskill.com/skills/addyosmani-api-and-interface-design","repository":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design","github_repo":"addyosmani/agent-skills"},"suited_tasks":["Design and creative workflows","Claude Code teams","teams that value GitHub adoption signals","Inspect visual requirements","Generate reusable assets","Package output for review","Navigate pages","Click and type safely"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","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 addyosmani-api-and-interface-design"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"api-and-interface-design\" agent skill from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design. 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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 \"api-and-interface-design\" as a Claude Code skill from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design. 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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 \"api-and-interface-design\" from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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/addyosmani-api-and-interface-design/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/addyosmani-api-and-interface-design"},"trust":{"score":74,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"92K GitHub stars","repoActivity":"92K stars, 9.8K forks","lastPushed":"3d since push","license":"MIT","repository":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design","install":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","installSafety":"standard package or runtime install path","permissionSurface":"network or browser access","documentation":"Thin public metadata","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","Documentation summary is thin","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context"]},"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":87,"risk_level":"needs_review","risk_label":"Needs review","warnings":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","No 'When not to use' or 'Limitations' section; the skill may be over-applied to internal implementation details where rigid API contract practices are unnecessary.","The cross-reference to 'deprecation-and-migration' is not included, which could be a broken reference if that skill is not available in the target environment.","The provided excerpt cuts off in the 'Prefer Addition Over Modification' section; the submitted SKILL.md should be verified to ensure all sections are complete.","Documentation summary is thin","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context"]},"safety_gate":{"tier":"reviewed","label":"Reviewed with permission notes","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Require human approval before installing into a real workspace."},"quality":{"score":95,"label":"Excellent"},"supply":{"track":"Design and creative production","scenario":"Design and creative","maintenance":"3d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","No OpenAgentSkill engagement data yet","No 'When not to use' or 'Limitations' section; the skill may be over-applied to internal implementation details where rigid API contract practices are unnecessary.","The cross-reference to 'deprecation-and-migration' is not included, which could be a broken reference if that skill is not available in the target environment.","The provided excerpt cuts off in the 'Prefer Addition Over Modification' section; the submitted SKILL.md should be verified to ensure all sections are complete.","Documentation summary is thin"],"agent_contract":{"task_input":"Use api-and-interface-design in an agent workflow","recommended_action":"Require human approval before installing into a real workspace.","install_policy":"review","minimum_review_before_use":["Trust: 74/100 Strong shortlist","Audit: 87/100 Needs review","Safety: 75/100 Review before install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"addyosmani-api-and-interface-design (api-and-interface-design)","install_command":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","risk_summary":"Needs review; Reviewed with permission notes; 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":"addyosmani-api-and-interface-design","task":"Use api-and-interface-design 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/addyosmani-api-and-interface-design","api":"https://www.openagentskill.com/api/agent/skills/addyosmani-api-and-interface-design","audit":"https://www.openagentskill.com/skills/addyosmani-api-and-interface-design/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=addyosmani-api-and-interface-design&task=Use%20api-and-interface-design%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20api-and-interface-design%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20api-and-interface-design%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/addyosmani-api-and-interface-design/install","manifest":"https://www.openagentskill.com/api/registry/manifest/addyosmani-api-and-interface-design"}},"machine_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"addyosmani-api-and-interface-design","name":"api-and-interface-design","description":"Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend.","category":"design-creative","url":"https://www.openagentskill.com/skills/addyosmani-api-and-interface-design","repository":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design","github_repo":"addyosmani/agent-skills"},"suited_tasks":["Design and creative workflows","Claude Code teams","teams that value GitHub adoption signals","Inspect visual requirements","Generate reusable assets","Package output for review","Navigate pages","Click and type safely"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","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 addyosmani-api-and-interface-design"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"api-and-interface-design\" agent skill from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design. 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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 \"api-and-interface-design\" as a Claude Code skill from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design. 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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 \"api-and-interface-design\" from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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/addyosmani-api-and-interface-design/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/addyosmani-api-and-interface-design"},"trust":{"score":74,"label":"Strong shortlist","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"92K GitHub stars","repoActivity":"92K stars, 9.8K forks","lastPushed":"3d since push","license":"MIT","repository":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design","install":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","installSafety":"standard package or runtime install path","permissionSurface":"network or browser access","documentation":"Thin public metadata","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","Documentation summary is thin","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context"]},"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":87,"risk_level":"needs_review","risk_label":"Needs review","warnings":["SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","No 'When not to use' or 'Limitations' section; the skill may be over-applied to internal implementation details where rigid API contract practices are unnecessary.","The cross-reference to 'deprecation-and-migration' is not included, which could be a broken reference if that skill is not available in the target environment.","The provided excerpt cuts off in the 'Prefer Addition Over Modification' section; the submitted SKILL.md should be verified to ensure all sections are complete.","Documentation summary is thin","README/SKILL.md completeness: Public metadata needs stronger README/SKILL.md context"]},"safety_gate":{"tier":"reviewed","label":"Reviewed with permission notes","auto_install_policy":"review","auto_install_allowed":false,"human_review_required":true,"blocked":false,"recommended_action":"Require human approval before installing into a real workspace."},"quality":{"score":95,"label":"Excellent"},"supply":{"track":"Design and creative production","scenario":"Design and creative","maintenance":"3d since push","risk":"Needs review"},"alternative_skills":[],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","SKILL.md is documentation-style and does not define an explicit step-by-step workflow or inputs/outputs, so an agent must infer how to apply the principles in practice.","No OpenAgentSkill engagement data yet","No 'When not to use' or 'Limitations' section; the skill may be over-applied to internal implementation details where rigid API contract practices are unnecessary.","The cross-reference to 'deprecation-and-migration' is not included, which could be a broken reference if that skill is not available in the target environment.","The provided excerpt cuts off in the 'Prefer Addition Over Modification' section; the submitted SKILL.md should be verified to ensure all sections are complete.","Documentation summary is thin"],"agent_contract":{"task_input":"Use api-and-interface-design in an agent workflow","recommended_action":"Require human approval before installing into a real workspace.","install_policy":"review","minimum_review_before_use":["Trust: 74/100 Strong shortlist","Audit: 87/100 Needs review","Safety: 75/100 Review before install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"addyosmani-api-and-interface-design (api-and-interface-design)","install_command":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","risk_summary":"Needs review; Reviewed with permission notes; 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":"addyosmani-api-and-interface-design","task":"Use api-and-interface-design 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/addyosmani-api-and-interface-design","api":"https://www.openagentskill.com/api/agent/skills/addyosmani-api-and-interface-design","audit":"https://www.openagentskill.com/skills/addyosmani-api-and-interface-design/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=addyosmani-api-and-interface-design&task=Use%20api-and-interface-design%20in%20an%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Use%20api-and-interface-design%20in%20an%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Use%20api-and-interface-design%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/addyosmani-api-and-interface-design/install","manifest":"https://www.openagentskill.com/api/registry/manifest/addyosmani-api-and-interface-design"}},"platforms":["Claude Code"],"use_cases":[{"slug":"design-creative","title":"Design and creative","url":"https://www.openagentskill.com/use-cases/design-creative"},{"slug":"browser-automation","title":"Browser automation","url":"https://www.openagentskill.com/use-cases/browser-automation"},{"slug":"document-processing","title":"Document processing","url":"https://www.openagentskill.com/use-cases/document-processing"},{"slug":"legal-compliance","title":"Legal and compliance","url":"https://www.openagentskill.com/use-cases/legal-compliance"}],"install":"npx skills add addyosmani/agent-skills --skill api-and-interface-design","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 addyosmani-api-and-interface-design","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 \"api-and-interface-design\" agent skill from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design. 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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 \"api-and-interface-design\" as a Claude Code skill from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design. 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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 \"api-and-interface-design\" from https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design 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: Guides stable API and interface design. Use when designing APIs, module boundaries, or any public interface. Use when creating REST or GraphQL endpoints, defining type contracts between modules, or establishing boundaries between frontend and backend. 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\":\"addyosmani-api-and-interface-design\",\"task\":\"Install api-and-interface-design\",\"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/addyosmani/agent-skills/tree/main/skills/api-and-interface-design","github_repo":"addyosmani/agent-skills","version":"1.0.0","license":"MIT","updated_at":"2026-09-04T13:23:05.685315+00:00","canonical_key":"addyosmani/agent-skills#skills/api-and-interface-design","recommendation_reasons":["Matches task terms: api, interface, design","Strong GitHub adoption: 92,201 stars","Install handoff is available","Repository freshness signal is available","Registry match score 99"],"urls":{"web":"https://www.openagentskill.com/skills/addyosmani-api-and-interface-design","api":"https://www.openagentskill.com/api/agent/skills/addyosmani-api-and-interface-design","install_api":"https://www.openagentskill.com/api/skills/addyosmani-api-and-interface-design/install","audit":"https://www.openagentskill.com/skills/addyosmani-api-and-interface-design/audit","repository":"https://github.com/addyosmani/agent-skills/tree/main/skills/api-and-interface-design"}}],"meta":{"endpoint":"/api/skills/search","canonical_agent_endpoint":"/api/agent/resolve","ranking_model":"hybrid-v2-task-fit-quality-outcomes","shortlist_policy":"Return one best match plus up to four distinct alternatives; suppress unrelated direct-name matches.","lookup_intent":true,"exact_match_found":true,"match_counts":{"exact":1,"near":0,"related":0},"no_match_message":null,"safety_policy":"Blocked candidates are excluded by default. Pass include_blocked=true only for manual audit workflows.","agent_friendly":true,"api_version":"1.0","generated_at":"2026-09-08T05:13:30.878Z"}}