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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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affaan-mAGENTS.md

ECC

affaan-m/ECC/AGENTS.md

Core Principles 1. **Agent-First** — Delegate to specialized agents for domain tasks 2. **Test-Driven** — Write tests before implementation, 80%+ coverage required 3. **Security-First** — Never compromise on security; validate

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affaan-mReads credentialsAGENTS.md

ECC

affaan-m/ECC/.codex/AGENTS.md

guidance, read `docs/CODEX-NAVIGATION-GUIDE.md` after this supplement. ## Model Recommendations | Task Type | Recommended Model | |-----------|------------------| | Routine coding, tests, formatting | GPT 5.5 | | Complex features, architecture | GPT 5.5 | | Debugging, refactoring | GPT 5.5 | | Security review

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TheAlgorithmsAGENTS.md

Python

TheAlgorithms/Python/AGENTS.md

change code and its doctests in the same PR.** If you're only updating tests, say so and touch nothing else. ## Code conventions (enforced by CI) - **Formatting & linting:** `ruff

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226k3y agoReviewMountCreate a free account to mount
sstAGENTS.md

opencode

sst/opencode/AGENTS.md

origin/dev`, target PRs at `dev`, and diff against `origin/dev` unless told otherwise. ## Live TUI Testing - Run `bun run dev:live` from a development worktree to test its TUI against

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n8n-ioReads credentialsAGENTS.md

n8n

n8n-io/n8n/AGENTS.md

Essential Commands For routine pre-commit checks, follow [Verify changes](#verify-changes). For focused tests, use `pnpm agent:test` or `pnpm agent:playwright`. Pass test files and worker limits after

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firecrawlReads credentialsAGENTS.md

firecrawl

firecrawl/firecrawl/AGENTS.md

here are the general steps you should take: 1. Write some end-to-end tests that assert your win conditions, if they don't already exist - 1 happy path (more

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200k17mo agoReviewMountCreate a free account to mount
MicrosoftAGENTS.md

vscode / copilotcli

microsoft/vscode/extensions/copilot/src/extension/chatSessions/copilotcli/AGENTS.md

copilotCLIPrompt.ts # Prompt reference extraction and parsing │ ├── customSessionTitleService.ts │ ├── delegationSummaryService.ts │ ├── utils.ts # SessionIdForCLI namespace (URI scheme: 'copilotcli') │ └── test/ │ ├── node/ # Node.js-specific (SDK integration, filesystem, permissions) │ ├── copilotCli.ts # ICopilotCLISDK, CopilotCLIModels, CopilotCLIAgents │ ├── copilotcliSession.ts # CopilotCLISession — main session

195k11d agoReviewMountCreate a free account to mount
MicrosoftAGENTS.md

vscode / agentHost

microsoft/vscode/src/vs/platform/agentHost/AGENTS.md

# Multi-Chat Architecture > Node runtime service construction is documented separately in [`node/serviceBootstrapping.md`](node/serviceBootstrapping.md). Host

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MicrosoftAGENTS.md

vscode / prompts

microsoft/vscode/src/vs/platform/agentHost/node/copilot/prompts/AGENTS.md

overridden sections) and the full config at `trace`. Keep new config shapes summarizable there. - **Tests.** `../../../test/node/agentHostPromptRegistry.test.ts` covers the registry/wiring; `../../../test/node/toolInstructions.test.ts` covers the composition/gating. Add cases there, not new harnesses

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MicrosoftAGENTS.md

vscode / node

microsoft/vscode/src/vs/platform/agentHost/test/node/AGENTS.md

Agent host unit tests For tests in this area that touch the SessionDatabase, they MUST use an in-memory database, not a real database file on disk. Use `SessionDatabase.open(':memory

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instructkrReads credentialsAGENTS.md

claw-code

instructkr/claw-code/AGENTS.md

Cargo workspace: 11 crates, `claw` binary ├── src/ # Python porting workspace + reference_data/ parity snapshots ├── tests/ # Python unittest validation of src/ + scripts/ (stdlib unittest) ├── docs/ # g0XX gate verification maps + topic docs

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instructkrAGENTS.md

claw-code / rust

instructkr/claw-code/rust/AGENTS.md

Anthropic Messages API. Prints `MOCK_ANTHROPIC_BASE_URL`. Dev-dep for CLI and analog tests. | | `runtime` | lib | Core: sessions, permissions, MCP, conversation loop. ~47 modules. | | `api` | lib | Provider clients: Anthropic

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instructkrAGENTS.md

claw-code / src

instructkr/claw-code/src/AGENTS.md

Real logic (permissions, path scoping) | `permissions.py`, `path_scope.py` | | Query engine shim | `query_engine.py` | | Runtime simulation | `runtime.py` | | Tests | repo-root `tests/` (test_porting_workspace.py, test_security_scope.py) | Run tests: `python -m unittest discover -s tests` from repo

3 projects use a version of this

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avelinoAGENTS.md

awesome-go

avelino/awesome-go/AGENTS.md

generator. - `.github/workflows/`: CI pipelines for PR quality validation, stale checks, site deployment, and Go tests. ## When Modifying the Awesome List - Read and respect `CONTRIBUTING.md` (alphabetical order, one item

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193k4y agoReviewMountCreate a free account to mount
Significant-GravitasAGENTS.md

AutoGPT

Significant-Gravitas/AutoGPT/AGENTS.md

Styling**: Tailwind CSS only, use design tokens, Hugeicons only (through the `Icon` atom) 5. **Testing**: Integration tests (Vitest + RTL + MSW) are the default (~90%, page-level). Playwright for E2E critical

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Significant-GravitasReads credentialsAGENTS.md

AutoGPT / autogpt_platform

Significant-Gravitas/AutoGPT/autogpt_platform/AGENTS.md

files, and the `check-env-defaults-blank` pre-commit hook (plus the matching unit test in `single-container/tests/test_runtime_config.py`, which CI runs) asserts that the settings listed in `BLANK

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DietrichGebertAGENTS.md

ponytail

DietrichGebert/ponytail/AGENTS.md

task and the code it touches. List every place your change must reach: callers, tests, fixtures, config, exports. Check what your change could break for users: data it would destroy

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182k5mo agoReviewMountCreate a free account to mount
fReads credentialsAGENTS.md

awesome-chatgpt-prompts

f/awesome-chatgpt-prompts/AGENTS.md

AUTH_AZURE_AD_ISSUER= ``` Optional features: ``` OPENAI_API_KEY= # For AI-powered semantic search ``` ## Testing Currently no automated tests. When implementing: - Place tests adjacent to source files or in `__tests

2 projects use a version of this

176k10mo agoReviewMountCreate a free account to mount
twbsAGENTS.md

bootstrap

twbs/bootstrap/AGENTS.md

lint` / `npm run js-lint` — lint - `npm run docs-build` — build docs site - `npm test` — full test suite (lint + dist + tests + docs) ## Writing style Use ASD-STE100 Simplified Technical English

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175k35d agoReviewMountCreate a free account to mount
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

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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.