About OpenSkillIndex
Skills for agentic AI systems are scattered across GitHub repos. OpenSkillIndex is a neutral, public-source index that surfaces them in one place, harness-agnostic and free to use.
What we index today
- Claude Code skills discovered as
SKILL.mdfiles in public GitHub repositories - OpenClaw manifests discovered as
openclaw.yaml/.ymlfiles in public repositories - Miscellaneous manifests for adjacent agentic harnesses where the format is detectable
All content is sourced from public GitHub repositories. We do not currently crawl marketplaces; we respect each marketplace's terms of service and will only integrate with explicit permission.
What makes this neutral
OpenSkillIndex is not affiliated with Anthropic, OpenClaw, or any single harness vendor. Every skill page shows its source, its ecosystem tag with our confidence level, and an authoritative link back to the original repository. We don't re-host code. We don't sell placement.
How ecosystem detection works
Each skill is matched against a rule matrix with explicit confidence levels (heuristic / strong / verified). When the signal is ambiguous, the ecosystem is marked unknown rather than forced into a bucket. Authors can claim their skills (via GitHub OAuth, coming soon) and override.
Ranking
Search uses Postgres full-text rank plus trigram name similarity, with an exact-match short-circuit for slug and canonical name, log-scaled popularity, and a freshness penalty for skills that haven't been confirmed working recently. The full formula is versioned in the open-source ranking module.
Open source plans
The frontend, the public API, the schema, migrations, ranking formula, and ecosystem detection rules will be released under the MIT license after the v1 shakedown. Production crawler schedules, anti-abuse heuristics, secrets, and exact enrichment prompts will stay private for operational-security and abuse-prevention reasons.
GitHub org openskillindex is reserved. Public repositories are not yet published.
Takedowns & contact
If your skill should not be indexed, email support@openskillindex.com and we'll hide it within 24 hours. See /bot for crawler policy.
Credits
Data sourced from public GitHub repositories, surfaced with attribution. Design built with Next.js 15, Tailwind, Postgres+pgvector. Typography: Fraunces (serif), Inter (sans), JetBrains Mono.