{"slug":"grademark-grademark","name":"Grademark","description":"An API for backtesting trading strategies in JavaScript and TypeScript.","tagline":"An API for backtesting trading strategies in JavaScript and TypeScript.","category":"finance","tags":["finance","backtesting","analysis","algorithmic-trading","backtesting-trading-strategies","data-forge","drawdown","drawdown-chart","equity-curve","javascript"],"author":{"name":"Grademark","verified":false,"url":"https://github.com/Grademark"},"attribution":{"status":"community_indexed","statusLabel":"Community indexed","shortLabel":"COMMUNITY INDEXED","sourceLabel":"GitHub star discovery","sourceDetail":"Grademark/grademark","creatorName":"Grademark","creatorUrl":"https://github.com/Grademark","sourceUrl":"https://github.com/Grademark/grademark","indexedBy":"OpenAgentSkill community index","claimUrl":"https://www.openagentskill.com/skills/grademark-grademark#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":312,"forks":42,"downloads":0,"rating":0,"review_count":0,"quality_score":36.17},"quality":{"score":51,"tier":"review","label":"Needs review","summary":"Inspect the repository carefully before adding it to an agent workflow.","signals":[{"label":"GitHub stars","value":"312","tone":"neutral"},{"label":"Freshness","value":"2y ago","tone":"warning"},{"label":"Install ready","value":"Yes","tone":"positive"},{"label":"License","value":"MIT","tone":"neutral"}],"warnings":["Repository looks stale"]},"trust":{"version":"trust-score-v3","score":73,"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":"312 GitHub stars"},{"id":"repo_activity","label":"Stars/forks activity","score":57,"weight":0.08,"status":"warn","detail":"312 stars, 42 forks; 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issue activity unavailable in current metadata"},{"status":"fail","label":"Recent maintenance","detail":"2y since push"},{"status":"pass","label":"License clarity","detail":"MIT"},{"status":"info","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 Grademark/grademark"},{"status":"pass","label":"Install command safety","detail":"standard package or runtime install path"},{"status":"info","label":"Permission surface","detail":"filesystem or document access, network or browser access"},{"status":"pass","label":"Repository evidence","detail":"https://github.com/Grademark/grademark"},{"status":"pass","label":"Review status","detail":"AI review data available"},{"status":"warn","label":"Ownership","detail":"No approved owner claim yet"},{"status":"info","label":"OpenAgentSkill usage","detail":"No local usage activity yet"}],"strengths":["AI review approved","Install path is available","Repository evidence is available","Install command has no obvious high-risk pattern"],"warnings":["Repository looks stale","Quality score needs review","Stars/forks activity: 312 stars, 42 forks; 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