Agent Skills

Free AI agent skills from GitHub, tested by a small, cheap model (Haiku). Further right means Haiku used it right more often.

How a skill is tested

A skill is a file that teaches an AI coding agent how to do one job. We test each one with a small, cheap model (Haiku), because if a small model gets it right, a big one will too.

  1. Picked right. Haiku sees the list of skills, like a real agent does, and gets 3 requests: 2 where this skill should be used and 1 that only sounds similar. It scores a point for each request it sends the right way.
  2. Followed right. Haiku reads the whole skill and a real request, then says its first step. A second Haiku call checks that step against the one the skill asks for.

Score: 1 point per request picked right (3) plus 2 points for following right, out of 5, shown out of 100. Further right is better. Green is 80 and up, amber 50 to 79, red below 50. Pick a kind of skill to see them as a leaderboard, best first. Haiku only sees skills from the same repo when it picks, as if you had installed that one collection. The test questions were written from each skill's own text by a stronger model, so a skill is never graded on something it does not claim to do. Last run: claude-haiku-4-5-20251001, 2026-10-28.

The same skills as a table
SkillFromWhat it doesScorePicked rightFollowed right
systematic-debugging obra/superpowersFind the root cause before any fix, in four phases: investigate, compare, hypothesise, then fix. 100 3/3 1/1
investigate garrytan/gstackFind the root cause of a bug first, then fix it: symptoms, code trace, recent changes, reproduce. 60 1/3 1/1
ios-fix garrytan/gstackFix iOS bugs on a real device, but only after a state snapshot reproduces the bug as a test fixture. 100 3/3 1/1
gstack-openclaw-investigate garrytan/gstackRoot-cause debugging for the OpenClaw agent: no fix before you know why it broke. 80 2/3 1/1
diagnosing-bugs mattpocock/skillsDebug hard bugs and slowdowns by building a tight pass/fail feedback loop first. 100 3/3 1/1
reproduce-bug trailofbits/skillsReproduce a reported runtime or compiler bug on a local checkout and save raw evidence. 60 3/3 0/1
workers-profiling cloudflare/skillsProfile CPU and memory of deployed Workers and Durable Objects to find what to optimize. 60 3/3 0/1
sentry openai/skillsRead Sentry issues and recent production errors with the sentry CLI, read-only. 60 3/3 0/1
eas-observe expo/skillsAdd expo-observe to track startup, navigation speed, JS errors and native crashes in production. 60 3/3 0/1
firebase-crashlytics firebase/agent-skillsSet up Crashlytics crash reporting and read crash data for Android and iOS apps. 100 3/3 1/1
azure-diagnostics microsoft/azure-skillsDebug Azure production issues with AppLens, Azure Monitor and resource health. 60 3/3 0/1
debugging-strategies wshobson/agentsDebug step by step: reproduce, gather facts, guess cause, test the guess. 80 2/3 1/1
parallel-debugging wshobson/agentsTest many bug theories in parallel, collect evidence, pick the real root cause. 60 3/3 0/1
focused-fix alirezarezvani/claude-skillsFix one broken feature end to end: scope it, trace deps, diagnose, fix, verify. 100 3/3 1/1
red-green-proof alirezarezvani/claude-skillsProve a bug: failing test first, fix, then revert the fix and see red again. 60 3/3 0/1
debugging-wizard Jeffallan/claude-skillsFind bugs from stack traces and logs with a hypothesis-first method. 40 2/3 0/1
root-cause-tracing NeoLabHQ/context-engineering-kitTrace a deep error backward up the call stack to the original trigger. 100 3/3 1/1
context-degradation muratcankoylan/Agent-Skills-for-Context-EngineeringDiagnose lost-in-middle, context poisoning, clash and confusion in agents. 100 3/3 1/1
systematic-debugging mrgoonie/claudekit-skillsFour phase debugging: find the root cause before any fix. 100 3/3 1/1
flisk-doctor flisk-sh/flisk-skillsCheck or repair the Flisk environment and project config with flisk doctor: --all, --json, --fix, and freeing Docker networks. 100 3/3 1/1
flisk-ports flisk-sh/flisk-skillsFind and fix the URLs of a Flisk stack: flisk networks, Traefik routing on *.localhost, host port selection and the FLISK_*_PORT overrides. 100 3/3 1/1
flisk-troubleshoot flisk-sh/flisk-skillsDiagnose a Flisk stack that fails after flisk up: red Tilt resources, Postgres crash loops, unhealthy services, hung up or down. 40 2/3 0/1