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AGENTS.md examples from real projects

How real projects brief Codex, Cursor and every other agent that reads AGENTS.md.

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Hugging FaceAGENTS.md

transformers

huggingface/transformers/.ai/AGENTS.md

docstrings. - `make check-repo` — `make typing` plus consistency checks. - `RUN_SLOW=1 pytest ...` — many tests are marked slow and skipped in CI. Run `make style` (or `make fix-repo

No other project uses it yet

169k2mo agoReviewMountCreate a free account to mount
langgeniusAGENTS.md

dify / api

langgenius/dify/api/AGENTS.md

repository root: - Format and lint: `make lint` - Type check: `make type-check` - Unit tests: `make test` - Targeted tests: `make test TARGET_TESTS=./api/tests/ ` Run direct Python commands through

No other project uses it yet

161k16d agoReviewMountCreate a free account to mount
langgeniusAGENTS.md

dify / cli

langgenius/dify/cli/AGENTS.md

requires the Bun version pinned in `.bun-version`; command-tree generation and the `dev`, `test`, and `build` pre-scripts invoke it. Read [`ARD.md`] before adding a command or changing shared

No other project uses it yet

161k16d agoReviewMountCreate a free account to mount
langgeniusAGENTS.md

dify / dify-agent

langgenius/dify/dify-agent/AGENTS.md

agent/`: - Lint: `make check` - Format and fix lint: `make fix` - Type check: `make typecheck` - Tests: `make test` Use the package's `uv` environment and Pydantic v2 APIs. Inspect current dependency

1 project uses a version of this

161k16d agoReviewMountCreate a free account to mount
langgeniusAGENTS.md

dify / e2e

langgenius/dify/e2e/AGENTS.md

when a required fixture is missing. ## Browser, API, And Contract Boundaries The action under test belongs to the browser. APIs may prepare fixtures, poll persistence, and clean up; they

No other project uses it yet

161k16d agoReviewMountCreate a free account to mount
langgeniusAGENTS.md

dify / web

langgenius/dify/web/AGENTS.md

port. Switch to the Next.js development server (`pnpm -C web dev:next`) only when testing Next.js-specific functionality or investigating behavior that differs from Next.js. - Read `docs/test.md` only for frontend

No other project uses it yet

161k16d agoReviewMountCreate a free account to mount
clash-verge-revAGENTS.md

clash-verge-rev

clash-verge-rev/clash-verge-rev/AGENTS.md

your own words, and verify the change against the reported behavior before submitting. 4. **Tests are justified, not default.** Do not add tests, test scaffolding, or speculative defensive code unless

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157k24d agoReviewMountCreate a free account to mount
langflow-aiAGENTS.md

langflow

langflow-ai/langflow/AGENTS.md

make format_frontend # Format TypeScript (biome) make format # Both make lint # mypy type checking ``` ### Testing ```bash make unit_tests # Backend unit tests (pytest, parallel) make unit_tests async=false # Sequential

1 project uses a version of this

156k20d agoReviewMountCreate a free account to mount
GitHubAGENTS.md

spec-kit

github/spec-kit/AGENTS.md

operation boundary, command-module naming, private phases, nested command groups, registration ownership, and mirrored tests. ## Adding or Updating MCP Commands Before adding or changing MCP tools for Specify commands, read

Steady+42 stars this week

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149k12d agoReviewMountCreate a free account to mount
comfyanonymousAGENTS.md

ComfyUI

comfyanonymous/ComfyUI/AGENTS.md

blue eyes. Feel free to use her in ComfyUI materials, UI text, examples, tests, generated assets, or comments, but do not disrespect her. - Warning and info messages should be short

3 projects use a version of this

146k9mo agoReviewMountCreate a free account to mount
VercelAGENTS.md

next.js / test

vercel/next.js/test/AGENTS.md

Test instructions ## Cache Components compatibility All newly created e2e tests must work with Cache Components both enabled and disabled. The test infrastructure runs both variants. In the enabled variant, `__NEXT

Steady2 mentions in 2 weeks

No other project uses it yet

143k6mo agoReviewMountCreate a free account to mount
yangshunAGENTS.md

tech-interview-handbook

yangshun/tech-interview-handbook/AGENTS.md

check - Run format, lint, and TypeScript type checks - lint - Lint code - fmt - Format code - test - Run tests ### Execute - run - Run monorepo tasks - exec - Execute a command from local `node_modules/.bin

1 project uses a version of this

143k8mo agoReviewMountCreate a free account to mount
MicrosoftAGENTS.md

PowerToys

microsoft/PowerToys/AGENTS.md

Top-level AI contributor guidance for developing PowerToys - a collection of Windows productivity utilities

No other project uses it yet

141k23d agoReviewMountCreate a free account to mount
ggml-orgAGENTS.md

llama.cpp

ggml-org/llama.cpp/AGENTS.md

merged. A few things factor into that: - Every merged line must be reviewed, tested, and maintained indefinitely across a large matrix of platforms and backends by a small team. - llama.cpp

Steady14 mentions in 2 weeks

No other project uses it yet

134k2mo agoReviewMountCreate a free account to mount
OpenAIAGENTS.md

codex / code-mode-host

openai/codex/codex-rs/code-mode-host/AGENTS.md

Tests Do not use timeouts or sleeps to synchronize tests. Wait for explicit signals or observable state; let the test runner enforce test-case timeouts

Steady13 mentions in 2 weeks

No other project uses it yet

134k18d agoReviewMountCreate a free account to mount
kubernetesAGENTS.md

kubernetes

kubernetes/kubernetes/AGENTS.md

header from `hack/boilerplate/boilerplate.go.txt`. ## Contributor Guidelines - Keep changes focused and reviewable - Add or update relevant tests. Do not add trivial unit tests just for the sake of code coverage. - When creating

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129k5y agoReviewMountCreate a free account to mount
rustdeskAGENTS.md

rustdesk

rustdesk/rustdesk/AGENTS.md

flutter/lib/mobile/` - Shared: `flutter/lib/common/` and `flutter/lib/models/` ## Rust Rules * Avoid `unwrap()` / `expect()` in production code. * Exceptions: * tests; * lock acquisition where failure means poisoning, not normal control flow. * Otherwise prefer `Result` + `?` or explicit

Steady6 mentions in 2 weeks

No other project uses it yet

129k24mo agoReviewMountCreate a free account to mount
reactAGENTS.md

react-native

react/react-native/AGENTS.md

runtime (Kotlin, Java, JNI) | | `packages/react-native/{React,ReactApple}` | Apple runtime (Objective-C++, Swift) | | `packages/rn-tester` | RNTester — test app showcasing each core component and API, plus a `Playground` scratch surface | | `packages/*` | Other published

Steady2 mentions in 2 weeks

2 projects use a version of this

127k5mo agoReviewMountCreate a free account to mount
rust-langAGENTS.md

rust

rust-lang/rust/AGENTS.md

gate fails When a rule identifies banned work, **STOP** that work. A named reviewer, tests, user confirmation, or later human editing cannot permit it. Do not ask for prerequisites, promise

1 project uses a version of this

122k13d agoReviewMountCreate a free account to mount
MicrosoftAGENTS.md

v8-jsi / nodejs

microsoft/v8-jsi/deps/nodejs/AGENTS.md

message-guidelines). The human contributor opening the PR takes full responsibility for the changes. * **Testing and verification**: All changes must pass the Node.js continuous integration. Human judgment must verify that

Surging1 mention in 2 weeks

1 project uses a version of this

19015d agoReviewMountCreate a free account to mount
CLAUDE.md vs AGENTS.md

About AGENTS.md

What is AGENTS.md?

An open format for instructions to coding agents, read by Codex, Cursor and others. Think of it as a README written for agents.

Where does it go?

At the repository root, with more specific files in subdirectories. Agents read the one closest to the file they're editing.

What should it contain?

Setup and test commands, code style, and the rules a new contributor would need to know.

Does Claude Code read it?

Claude Code reads CLAUDE.md. A one-line CLAUDE.md that points at AGENTS.md covers both.