Agent rules and skills from open source.
Read real AGENTS.md and CLAUDE.md files. See what they do.
- Projects
- 100
- Skills
- 1,214
- GitHub stars
- 5.5M
32 projects of 100
Star snapshot · September 2026
Transformers
huggingface/transformers
A short guide to contribution coordination, generated models, converter directives, modular sources, and required checks.
Python166.3k stars1 skill.ai/AGENTS.md40 lines
Next.js
vercel/next.js
A development guide to iteration, tests, contributor permissions, source context, runtime and bundler combinations, and releases.
JavaScript142.3k stars25 skillsAGENTS.md560 lines
Deno
denoland/deno
A guide to runtime architecture, native extensions, Cargo-backed JavaScript tests, spec tests, review history, and Rust linting.
Rust108.4k stars6 skillsCLAUDE.md433 lines
Playwright
microsoft/playwright
A monorepo guide to architecture, test fixtures, suite selection, protocol boundaries, local instructions, and combined checks.
TypeScript96.2k stars7 skillsCLAUDE.md164 lines
Zed
zed-industries/zed
A Rust and GPUI guide to errors, state, concurrency, review markers, instruction symlinks, and permanent rules.
Rust90.4k stars8 skills.rules189 lines
uv
astral-sh/uv
A concise constraint list for targeted tests, fallible operations, precise lockfiles, privileged webhooks, and clear prose.
Rust89.8k stars1 skillAGENTS.md32 lines
Svelte
sveltejs/svelte
A minimal guide to contributor requirements, the full test suite, and a dedicated skill for performance work.
JavaScript88.1k stars1 skillAGENTS.md11 lines
Mem0
mem0ai/mem0
A package-routing guide to language-specific tools, required deliverables, accepted issues, and contributor-account rules.
Python65.5k stars55 skillsAGENTS.md175 lines
Ghostty
ghostty-org/ghostty
A compact guide to build and test commands, three source areas, and limits on public issue and pull-request actions.
Zig61.1k stars1 skillAGENTS.md39 lines
Nuxt
nuxt/nuxt
A contribution-boundary guide defining what agents may prepare, what humans must submit, and where AI disclosure belongs.
TypeScript60.9k stars0 skillsAGENTS.md11 lines
Goose
aaif-goose/goose
A Rust desktop guide to issue readiness, parallel agent loops, retiring MCP code, and a macOS executable-replacement trap.
Rust54.4k stars1 skillAGENTS.md135 lines
Cal.diy
calcom/cal.diy
Practical examples and firm rules for pull-request size, imports, data access, security, and approval-gated work.
TypeScript48.5k stars5 skillsAGENTS.md244 lines
Airflow
apache/airflow
A broad guide to repository structure, commands, security reports, newsfragments, remote naming, and commit rules.
Python46.9k stars8 skillsAGENTS.md537 lines
Ray
ray-project/ray
A contribution guide to duplicate work, accountability, local test evidence, stop conditions, and existing development docs.
Python43.8k stars8 skillsAGENTS.md99 lines
Gradio
gradio-app/gradio
A Python and Svelte guide to issue ownership, AI disclosure, human review, release notes, builds, and tests.
Python43.6k stars4 skillsAGENTS.md72 lines
herdr
herdrdev/herdr
Four audience-specific guides to maintainers, local development, external contributions, performance, compatibility, and releases.
Rust38.2k stars4 skillsAGENTS.md317 lines
Diffusers
huggingface/diffusers
A shared guide to setup, approval-gated actions, self-review, publication boundaries, and focused model and testing references.
Python34.5k stars4 skills.ai/AGENTS.md84 lines
mise
jdx/mise
A development guide to registry acceptance, version resolution, Windows paths, deprecations, dependencies, and release notes.
Rust34k stars1 skillAGENTS.md417 lines
Turborepo
vercel/turborepo
A pull-request guide to commit and push hooks, external-contributor steps, and a narrow title format with examples.
Rust31.1k stars1 skillAGENTS.md27 lines
VoiceStudio
debpalash/VoiceStudio
A cross-platform checklist for source precedence, user-visible parity, offline tests, review follow-up, and local-first operation.
Python30.2k stars5 skillsAGENTS.md57 lines
OpenAI Agents SDK for Python
openai/openai-agents-python
A Python SDK guide to scope, released contracts, branch-local choices, visible-behavior tests, architecture, and compatibility.
Python29.5k stars18 skillsAGENTS.md214 lines
MLflow
mlflow/mlflow
A guide to the tracking layer, provider stubs, workspace-aware tests, dependency cooldowns, CI, and scoped pull requests.
Python28k stars6 skillsCLAUDE.md236 lines
Biome
biomejs/biome
A concise guide to source-backed analysis, generators, contributor messaging, testing, reviews, changesets, and docs.
Rust25.9k stars11 skillsAGENTS.md82 lines
marimo
marimo-team/marimo
A Python and frontend guide to user impact, tests, contribution rules, AI disclosure, and a subtle docstring convention.
Python22.8k stars2 skillsAGENTS.md65 lines
Vitest
vitest-dev/vitest
A validation guide to source checks, bundled output, test helpers, CI coverage, stale builds, and package exceptions.
TypeScript17.1k stars1 skillAGENTS.md240 lines
Trigger.dev
triggerdotdev/trigger.dev
A task-execution guide to package workflows, tests, releases, retired paths, versioned SDK docs, and shared dependencies.
TypeScript16.3k stars14 skillsAGENTS.md301 lines
Flue
withastro/flue
An architecture guide defining agents, harnesses, sessions, operations, and turns, plus contribution workflows and their limits.
TypeScript8.3k stars2 skillsAGENTS.md53 lines
Cloudflare Agents
cloudflare/agents
Layered guides for packages, examples, tutorials, and design records, with separate runtime, browser, type, and release workflows.
TypeScript5.6k stars7 skillsAGENTS.md196 lines
Varlock
dmno-dev/varlock
A Bun and Turbo guide to build order, native binaries, tests, version bumps, docs, paid reviews, and wording.
TypeScript4.4k stars1 skillAGENTS.md89 lines
moon
moonrepo/moon
A Rust and JavaScript guide to separate task runners, environment requirements, warning policies, and branch rules.
Rust4.1k stars2 skillsAGENTS.md101 lines
TanStack DB
TanStack/db
A review guide with good and bad query examples, independent test oracles, counterexamples, and escaped-bug analysis.
TypeScript3.9k stars13 skillsAGENTS.md753 lines
fx
vercel-labs/fx
A detailed Zig guide to builds, interactive binary checks, CI, terminal replays, performance limits, and correctness.
Zig3k stars0 skillsAGENTS.md470 lines
See the techniques these projects share.
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