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

ShowingHard prohibitions

49 projects of 100

Star snapshot · September 2026

OpenClaw
openclaw/openclaw
A contribution guide to extension points, core ownership, context cost, clean cutovers, conversation history, and permissions.
TypeScript389.7k stars
122 skillsAGENTS.md123 lines
opencode
anomalyco/opencode
A code-heavy guide to simple abstractions, session invariants, helper-based flow, and wrong-versus-right examples.
TypeScript207.1k stars
2 skillsAGENTS.md161 lines
n8n
n8n-io/n8n
A monorepo guide to package boundaries, persistence, encryption, lint rules, memory-aware commands, tests, and contributions.
TypeScript204.3k stars
41 skillsAGENTS.md428 lines
Firecrawl
firecrawl/firecrawl
A concise API guide to success and failure paths, environment-gated tests, one service harness, local runs, and CI.
TypeScript180.4k stars
5 skillsAGENTS.md19 lines
Langflow
langflow-ai/langflow
A full-stack guide to dependencies, authorization boundaries, saved-flow class names, components, environments, and tests.
Python154.8k stars
10 skillsAGENTS.md243 lines
Codex
openai/codex
A dense Rust guide covering style, module boundaries, reviews, snapshot tests, app-server APIs, change scope, and model context.
Rust123.8k stars
17 skillsAGENTS.md320 lines
Electron
electron/electron
A guide to multi-repository builds, patches, C++ object lifetimes, release maintenance, and alternatives to costly commands.
C++123.1k stars
5 skillsCLAUDE.md330 lines
browser-use
browser-use/browser-use
A short development guide followed by extensive product documentation, with both sections separated by XML-style tags.
Python114.6k stars
7 skillsAGENTS.md1,017 lines
Deno
denoland/deno
A guide to runtime architecture, native extensions, Cargo-backed JavaScript tests, spec tests, review history, and Rust linting.
Rust108.4k stars
6 skillsCLAUDE.md433 lines
Pi
earendil-works/pi
A shared-checkout guide to session safety, coordination, model catalogs, isolated tests, interactive checks, and releases.
TypeScript105.5k stars
1 skillAGENTS.md124 lines
Playwright
microsoft/playwright
A monorepo guide to architecture, test fixtures, suite selection, protocol boundaries, local instructions, and combined checks.
TypeScript96.2k stars
7 skillsCLAUDE.md164 lines
vLLM
vllm-project/vllm
A testing guide to contracts, correctness, performance evidence, model evaluations, native builds, security, and benchmarks.
Python92k stars
4 skillsAGENTS.md158 lines
Storybook
storybookjs/storybook
A broad guide to repository structure, architecture, commands, pull requests, tests, self-maintenance, and maintainer preferences.
TypeScript91.1k stars
21 skillsAGENTS.md419 lines
Zed
zed-industries/zed
A Rust and GPUI guide to errors, state, concurrency, review markers, instruction symlinks, and permanent rules.
Rust90.4k stars
8 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 stars
1 skillAGENTS.md32 lines
Strapi
strapi/strapi
A Yarn and Nx guide to content access, dependency injection, shared types, edition boundaries, tests, skills, and migrations.
TypeScript73.2k stars
1 skillAGENTS.md262 lines
Mem0
mem0ai/mem0
A package-routing guide to language-specific tools, required deliverables, accepted issues, and contributor-account rules.
Python65.5k stars
55 skillsAGENTS.md175 lines
Astro
withastro/astro
A monorepo guide covering work planning, repository structure, tests, background development servers, and browser automation.
TypeScript62.5k stars
8 skillsAGENTS.md165 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 stars
1 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 stars
0 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 stars
1 skillAGENTS.md135 lines
Airflow
apache/airflow
A broad guide to repository structure, commands, security reports, newsfragments, remote naming, and commit rules.
Python46.9k stars
8 skillsAGENTS.md537 lines
Payload
payloadcms/payload
A CMS guide to architecture, test fixtures, access control, React memoization, CSS, server-client imports, and bundling.
TypeScript44.8k stars
7 skillsCLAUDE.md466 lines
Ray
ray-project/ray
A contribution guide to duplicate work, accountability, local test evidence, stop conditions, and existing development docs.
Python43.8k stars
8 skillsAGENTS.md99 lines
DuckDB
duckdb/duckdb
Pairs deprecated vector loops with replacement code and explains where query timeouts cannot intervene.
C++41.5k stars
0 skillsAGENTS.md493 lines
Omarchy
omacom/omarchy
A routing guide to seven workflows, audience-specific docs, and project helpers that replace raw shell commands.
Shell40.9k stars
2 skillsAGENTS.md133 lines
mise
jdx/mise
A development guide to registry acceptance, version resolution, Windows paths, deprecations, dependencies, and release notes.
Rust34k stars
1 skillAGENTS.md417 lines
RustFS
rustfs/rustfs
A layered guide to instruction precedence, permission-gated actions, verification tiers, storage rules, and review evidence.
Rust32.6k stars
13 skillsAGENTS.md183 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 stars
1 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 stars
5 skillsAGENTS.md57 lines
Better Auth
better-auth/better-auth
A contract-first guide to bug reports, shared Vitest helpers, and portable library code across Node.js, Bun, Deno, and Workers.
TypeScript29.9k stars
0 skillsAGENTS.md91 lines
Deep Agents
langchain-ai/deepagents
A short root guide to compatibility, repository searches, generated references, test quality, and focused local instructions.
Python29.5k stars
24 skillsAGENTS.md154 lines
MLflow
mlflow/mlflow
A guide to the tracking layer, provider stubs, workspace-aware tests, dependency cooldowns, CI, and scoped pull requests.
Python28k stars
6 skillsCLAUDE.md236 lines
cmux
manaflow-ai/cmux
A macOS guide to isolated app builds, sockets, terminal testing gaps, component skills, and protecting the main app.
Swift27.1k stars
22 skillsCLAUDE.md182 lines
AI SDK
vercel/ai
A guide to provider architecture, response schemas, security boundaries, fetched URLs, testing, and design decisions.
TypeScript26.8k stars
14 skillsAGENTS.md320 lines
Turso
tursodatabase/turso
A development guide to commands, subsystem boundaries, core principles, code and comment style, and banned metaphors.
Rust24.3k stars
13 skillsAGENTS.md165 lines
Temporal
temporalio/temporal
A compact guide to agent role, response length, tone, repository structure, commands, tests, and planning.
Go23k stars
1 skillAGENTS.md105 lines
T3 Code
pingdotgg/t3code
A self-hosted guide to live-process safety, database protection, cross-client checks, providers, and command-to-event flow.
TypeScript22.7k stars
4 skillsAGENTS.md169 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 stars
14 skillsAGENTS.md301 lines
Effect
Effect-TS/effect
A task-routed guide to focused checks, generated output, protected indexes, type tests, JSDoc, and examples.
TypeScript16.1k stars
12 skills.agents/AGENTS.md46 lines
TanStack Router
TanStack/router
A package guide to the shared core, framework bindings, Start, focused Nx tests, sandbox recovery, and example apps.
TypeScript15.1k stars
31 skillsAGENTS.md181 lines
Fresh
freshframework/fresh
An architecture-heavy guide tracing requests, rendering, island hydration, two build paths, and repository rules.
TypeScript13.8k stars
0 skillsAGENTS.md156 lines
OpenTUI
anomalyco/opentui
A terminal guide to TypeScript, native code, distribution, FFI types, text measurements, memory ownership, Bun, and Node.
TypeScript13.3k stars
1 skillAGENTS.md58 lines
Workers SDK
cloudflare/workers-sdk
A task-oriented guide to commands, source configuration, shared work, tests, package boundaries, and subsystem instructions.
TypeScript4.5k stars
1 skillAGENTS.md153 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 stars
1 skillAGENTS.md89 lines
moon
moonrepo/moon
A Rust and JavaScript guide to separate task runners, environment requirements, warning policies, and branch rules.
Rust4.1k stars
2 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 stars
13 skillsAGENTS.md753 lines
Railpack
railwayapp/railpack
A build-system guide tracing detection through containers, with mise tasks, generated files, fixtures, and runtime checks.
Go1.2k stars
1 skillCLAUDE.md99 lines
Kernel
kernel/kernel-images
A cloud VM and container guide to setup, tests, CDP routing, recorder cleanup, image quotas, telemetry, and events.
Go1.1k stars
0 skillsAGENTS.md52 lines

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