{"eval":{"version":"openagentskill-skill-eval-v1","slug":"wlzh-youtube-downloader","name":"youtube-downloader","generated_at":"2026-09-06T23:36:49.491Z","task_input":"Evaluate youtube-downloader before installing it in an AI agent workflow","status":"review","score":71,"risk_level":"medium","decision":{"recommendation":"manual_review","reason":"Test manually in an isolated workspace and compare against safer alternatives.","auto_install_allowed":false,"policy":"review","human_review_required":true},"task_fit":{"score":84,"suited_tasks":["Browser automation workflows","Claude Code teams","teams that value GitHub adoption signals","Navigate pages","Click and type safely","Check visual and DOM state","Inspect visual requirements","Generate reusable assets"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"]},"install":{"command":"npx skills add wlzh/skills --skill youtube-downloader","ready":true,"policy":"review","safety_label":"Review before install","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 wlzh-youtube-downloader"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"youtube-downloader\" agent skill from https://github.com/wlzh/skills/tree/main/video-downloader. 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: Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3. 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\":\"wlzh-youtube-downloader\",\"task\":\"Install youtube-downloader\",\"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 \"youtube-downloader\" as a Claude Code skill from https://github.com/wlzh/skills/tree/main/video-downloader. 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: Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3. 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\":\"wlzh-youtube-downloader\",\"task\":\"Install youtube-downloader\",\"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 \"youtube-downloader\" from https://github.com/wlzh/skills/tree/main/video-downloader 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: Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3. 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\":\"wlzh-youtube-downloader\",\"task\":\"Install youtube-downloader\",\"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."}]},"trust":{"score":71,"label":"Manual review","version":"trust-score-v4","evidence":{"stars":"612 GitHub stars","repoActivity":"612 stars, 75 forks","lastPushed":"9d since push","license":"MIT","repository":"https://github.com/wlzh/skills/tree/main/video-downloader","install":"npx skills add wlzh/skills --skill youtube-downloader","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"}},"audit":{"score":79,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Financial research output is not financial advice; require human review before any live investment decision","SKILL.md does not mention ffmpeg as an external dependency, but it is required for MP3 extraction and for merging video/audio streams.","The default output directory /mnt/user-data/outputs/ is assumed to exist; the skill does not document automatic creation.","URLs are passed to yt-dlp without explicit validation or a `--` separator, so unusual user input starting with `-` could be interpreted as options.","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review"]},"safety_gate":{"score":55,"tier":"experimental","label":"Experimental","auto_install_policy":"review","blocked":false,"permission_hints":[{"id":"shell","label":"Shell or command execution","reason":"Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.","severity":"high"},{"id":"network","label":"Network access","reason":"Skill likely fetches remote pages, APIs, repositories, or external services.","severity":"medium"}],"policy_warnings":["High-risk permission hints: Shell or command execution","Financial research output is not financial advice; require human review before any live investment decision"]},"checks":[{"id":"task_fit","label":"Task fit","status":"pass","score":84,"required_for_auto_install":true,"detail":"Task wording matches this skill metadata.","evidence":["Evaluate youtube-downloader before installing it in an AI agent workflow","design-creative","Browser automation workflows; Claude Code teams; teams that value GitHub adoption signals"]},{"id":"install_path","label":"Install path","status":"pass","score":92,"required_for_auto_install":true,"detail":"Install handoff is available.","evidence":["npx skills add wlzh/skills --skill youtube-downloader"]},{"id":"install_safety","label":"Install command safety","status":"pass","score":92,"required_for_auto_install":true,"detail":"standard package or runtime install path","evidence":["npx skills add wlzh/skills --skill youtube-downloader"]},{"id":"trust_score","label":"Trust score","status":"warn","score":71,"required_for_auto_install":true,"detail":"Potentially useful, but at least one trust signal needs human inspection.","evidence":["Manual review","612 GitHub stars","MIT"]},{"id":"audit_score","label":"Audit score","status":"warn","score":79,"required_for_auto_install":true,"detail":"Needs review","evidence":["Financial research output is not financial advice; require human review before any live investment decision"]},{"id":"agent_safety_gate","label":"Agent safety gate","status":"warn","score":55,"required_for_auto_install":true,"detail":"Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","evidence":["Test manually in an isolated workspace and compare against safer alternatives.","High-risk permission hints: Shell or command execution"]},{"id":"readme_skillmd_completeness","label":"README/SKILL.md completeness","status":"pass","score":86,"required_for_auto_install":false,"detail":"Metadata includes enough usage and workflow context","evidence":["Strong README/SKILL.md context"]},{"id":"license_clarity","label":"License clarity","status":"pass","score":86,"required_for_auto_install":true,"detail":"MIT","evidence":["MIT"]},{"id":"recent_maintenance","label":"Recent maintenance","status":"pass","score":100,"required_for_auto_install":false,"detail":"9d since push","evidence":["9d since push"]},{"id":"permission_surface","label":"Permission surface","status":"warn","score":76,"required_for_auto_install":true,"detail":"shell or command execution","evidence":["Shell or command execution: high","Network access: medium"]},{"id":"alternatives","label":"Alternatives available","status":"pass","score":82,"required_for_auto_install":false,"detail":"Alternative skills are available for comparison.","evidence":["anthropic-frontend-design","design-taste-frontend","vox-director","anthropic-canvas-design"]}],"blockers":[],"warnings":["Trust score: Potentially useful, but at least one trust signal needs human inspection.","Audit score: Needs review","Agent safety gate: Sparse or mixed signals. Useful for discovery, but not for autonomous installation.","Permission surface: shell or command execution","High-risk permission hints: Shell or command execution","Financial research output is not financial advice; require human review before any live investment decision","SKILL.md does not mention ffmpeg as an external dependency, but it is required for MP3 extraction and for merging video/audio streams.","The default output directory /mnt/user-data/outputs/ is assumed to exist; the skill does not document automatic creation.","URLs are passed to yt-dlp without explicit validation or a `--` separator, so unusual user input starting with `-` could be interpreted as options.","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review"],"validation_plan":["Inspect repository, README/SKILL.md, license, and recent commits before production use.","Install in an isolated workspace or sandbox with no production secrets available.","Run the smallest representative task and record files touched, commands run, network access, and outputs.","Compare the selected skill against at least one alternative when the eval status is review or failed.","Promote only after the agent reports a successful verification result and unresolved warnings are accepted."],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","SKILL.md does not mention ffmpeg as an external dependency, but it is required for MP3 extraction and for merging video/audio streams.","No OpenAgentSkill engagement data yet","High-risk permission hints: Shell or command execution","Financial research output is not financial advice; require human review before any live investment decision","The default output directory /mnt/user-data/outputs/ is assumed to exist; the skill does not document automatic creation.","URLs are passed to yt-dlp without explicit validation or a `--` separator, so unusual user input starting with `-` could be interpreted as options."],"alternatives":[{"slug":"anthropic-frontend-design","name":"Frontend Design","url":"https://www.openagentskill.com/skills/anthropic-frontend-design","stars":174615,"install_command":"npx skills add anthropics/skills --skill frontend-design","trust_score":91,"audit_score":93},{"slug":"design-taste-frontend","name":"Taste Skill: Anti-Slop Frontend","url":"https://www.openagentskill.com/skills/design-taste-frontend","stars":84649,"install_command":"npx skills add Leonxlnx/taste-skill --skill design-taste-frontend","trust_score":94,"audit_score":96},{"slug":"vox-director","name":"Vox Director","url":"https://www.openagentskill.com/skills/vox-director","stars":1755,"install_command":"npx skills add Alisa0808/vox-director --skill vox-director","trust_score":86,"audit_score":92},{"slug":"anthropic-canvas-design","name":"Canvas Design","url":"https://www.openagentskill.com/skills/anthropic-canvas-design","stars":174615,"install_command":"npx skills add anthropics/skills --skill canvas-design","trust_score":90,"audit_score":93}],"machine_metadata":{"version":"openagentskill-agent-metadata-v2","skill":{"slug":"wlzh-youtube-downloader","name":"youtube-downloader","description":"Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3.","category":"design-creative","url":"https://www.openagentskill.com/skills/wlzh-youtube-downloader","repository":"https://github.com/wlzh/skills/tree/main/video-downloader","github_repo":"wlzh/skills"},"suited_tasks":["Browser automation workflows","Claude Code teams","teams that value GitHub adoption signals","Navigate pages","Click and type safely","Check visual and DOM state","Inspect visual requirements","Generate reusable assets"],"suited_agents":["Codex","Claude Code","Cursor","OpenAgentSkill CLI","CLI"],"install":{"command":"npx skills add wlzh/skills --skill youtube-downloader","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 wlzh-youtube-downloader"},{"id":"codex","label":"Codex","kind":"agent-prompt","value":"Install the \"youtube-downloader\" agent skill from https://github.com/wlzh/skills/tree/main/video-downloader. 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: Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3. 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\":\"wlzh-youtube-downloader\",\"task\":\"Install youtube-downloader\",\"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 \"youtube-downloader\" as a Claude Code skill from https://github.com/wlzh/skills/tree/main/video-downloader. 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: Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3. 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\":\"wlzh-youtube-downloader\",\"task\":\"Install youtube-downloader\",\"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 \"youtube-downloader\" from https://github.com/wlzh/skills/tree/main/video-downloader 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: Download YouTube videos with customizable quality and format options. Use this skill when the user asks to download, save, or grab YouTube videos. Supports various quality settings (best, 1080p, 720p, 480p, 360p), multiple formats (mp4, webm, mkv), and audio-only downloads as MP3. 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\":\"wlzh-youtube-downloader\",\"task\":\"Install youtube-downloader\",\"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/wlzh-youtube-downloader/install","manifest_url":"https://www.openagentskill.com/api/registry/manifest/wlzh-youtube-downloader"},"trust":{"score":71,"label":"Manual review","version":"trust-score-v4","install_policy":"human_review_before_install","evidence":{"stars":"612 GitHub stars","repoActivity":"612 stars, 75 forks","lastPushed":"9d since push","license":"MIT","repository":"https://github.com/wlzh/skills/tree/main/video-downloader","install":"npx skills add wlzh/skills --skill youtube-downloader","installSafety":"standard package or runtime install path","permissionSurface":"shell or command execution","documentation":"Strong README/SKILL.md context","agentOutcomes":"No agent outcome data yet"},"outcome_evidence":{"total":0,"successes":0,"failures":0,"not_relevant":0,"success_rate":null,"recent_success_rate":null,"recent_failure_rate":null,"install_attempts":0,"install_success_rate":null,"risk_blocked":0,"setup_required":0,"avg_output_quality":null,"production_outcomes":0,"last_outcome_at":null,"label":"No agent outcome data yet"},"auto_install":{"allowed":false,"sandbox_required":true,"reason":"Human review or sandbox validation is required before automatic installation."},"best_for":["design-creative","agent-skill"],"known_risks":["SKILL.md does not mention ffmpeg as an external dependency, but it is required for MP3 extraction and for merging video/audio streams.","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review"]},"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":79,"risk_level":"needs_review","risk_label":"Needs review","warnings":["Financial research output is not financial advice; require human review before any live investment decision","SKILL.md does not mention ffmpeg as an external dependency, but it is required for MP3 extraction and for merging video/audio streams.","The default output directory /mnt/user-data/outputs/ is assumed to exist; the skill does not document automatic creation.","URLs are passed to yt-dlp without explicit validation or a `--` separator, so unusual user input starting with `-` could be interpreted as options.","Financial research output is not financial advice; require human review before any live investment decision.","Quality score needs review"]},"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":74,"label":"Strong"},"supply":{"track":"Design and creative production","scenario":"Design and creative","maintenance":"9d since push","risk":"Needs review"},"alternative_skills":[{"slug":"anthropic-frontend-design","name":"Frontend Design","url":"https://www.openagentskill.com/skills/anthropic-frontend-design","stars":174615,"install_command":"npx skills add anthropics/skills --skill frontend-design","trust_score":91,"audit_score":93},{"slug":"design-taste-frontend","name":"Taste Skill: Anti-Slop Frontend","url":"https://www.openagentskill.com/skills/design-taste-frontend","stars":84649,"install_command":"npx skills add Leonxlnx/taste-skill --skill design-taste-frontend","trust_score":94,"audit_score":96},{"slug":"vox-director","name":"Vox Director","url":"https://www.openagentskill.com/skills/vox-director","stars":1755,"install_command":"npx skills add Alisa0808/vox-director --skill vox-director","trust_score":86,"audit_score":92},{"slug":"anthropic-canvas-design","name":"Canvas Design","url":"https://www.openagentskill.com/skills/anthropic-canvas-design","stars":174615,"install_command":"npx skills add anthropics/skills --skill canvas-design","trust_score":90,"audit_score":93}],"do_not_use_when":["teams that need a vendor-supported SLA","production agents without a repository review","SKILL.md does not mention ffmpeg as an external dependency, but it is required for MP3 extraction and for merging video/audio streams.","No OpenAgentSkill engagement data yet","High-risk permission hints: Shell or command execution","Financial research output is not financial advice; require human review before any live investment decision","The default output directory /mnt/user-data/outputs/ is assumed to exist; the skill does not document automatic creation.","URLs are passed to yt-dlp without explicit validation or a `--` separator, so unusual user input starting with `-` could be interpreted as options."],"agent_contract":{"task_input":"Evaluate youtube-downloader before installing it in an AI agent workflow","recommended_action":"Test manually in an isolated workspace and compare against safer alternatives.","install_policy":"review","minimum_review_before_use":["Trust: 71/100 Manual review","Audit: 79/100 Needs review","Safety: 55/100 Review before install","Review repository, license, install command, and permission surface before production use."],"expected_agent_output":{"selected_skill":"wlzh-youtube-downloader (youtube-downloader)","install_command":"npx skills add wlzh/skills --skill youtube-downloader","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":"wlzh-youtube-downloader","task":"Evaluate youtube-downloader before installing it in an AI 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/wlzh-youtube-downloader","api":"https://www.openagentskill.com/api/agent/skills/wlzh-youtube-downloader","audit":"https://www.openagentskill.com/skills/wlzh-youtube-downloader/audit","eval":"https://www.openagentskill.com/api/agent/evals?slug=wlzh-youtube-downloader&task=Evaluate%20youtube-downloader%20before%20installing%20it%20in%20an%20AI%20agent%20workflow&max_risk=medium","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Evaluate%20youtube-downloader%20before%20installing%20it%20in%20an%20AI%20agent%20workflow&agent=codex&max_risk=medium","receipt":"https://www.openagentskill.com/api/agent/receipt?task=Evaluate%20youtube-downloader%20before%20installing%20it%20in%20an%20AI%20agent%20workflow&agent=codex&max_risk=medium&format=text","install":"https://www.openagentskill.com/api/skills/wlzh-youtube-downloader/install","manifest":"https://www.openagentskill.com/api/registry/manifest/wlzh-youtube-downloader"}},"endpoints":{"web":"https://www.openagentskill.com/skills/wlzh-youtube-downloader","api":"https://www.openagentskill.com/api/agent/skills/wlzh-youtube-downloader","eval":"https://www.openagentskill.com/api/agent/evals?slug=wlzh-youtube-downloader","audit":"https://www.openagentskill.com/skills/wlzh-youtube-downloader/audit","resolve":"https://www.openagentskill.com/api/agent/resolve?task=Evaluate%20youtube-downloader%20before%20installing%20it%20in%20an%20AI%20agent%20workflow&agent=codex&max_risk=medium"}},"meta":{"endpoint":"/api/agent/evals","mode":"skill_eval","purpose":"Pre-install eval contract for a single skill. Agents should read this before installing a reusable skill.","generated_at":"2026-09-06T23:36:49.491Z"}}