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OpenAIAGENTS.mdopenai/codex/codex-rs/code-mode-host/AGENTS.md
Do not use timeouts or sleeps to synchronize tests. Wait for explicit signals or observable state; let the test runner enforce test-case timeouts.
Steady14 mentions in 2 weeks
No other project uses it yet
OpenAIAGENTS.mdopenai/codex/codex-rs/exec-server/src/sandbox_integrity/AGENTS.md
These checks currently emit telemetry only. Findings and preparation errors must not change sandbox construction, permissions, approvals, or command execution. Supported backends are Seatbelt, bubblewrap, and MXC; legacy Windows is out of scope. - Backends supply complete dependency inventories and interpret the request's original filesystem policy: resolve command temp directories and MXC volumes, and reuse the backend's deny-glob expansion where enforcement expands globs. - The runner prepares dependency facts and invokes each checker per dependency. Checkers remain independent of inventories…
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No other project uses it yet
OpenAIAGENTS.mdopenai/codex/codex-rs/rollout-trace/AGENTS.md
Only the exact Codex binary that wrote a diagnostic trace bundle runs its reducer. There is no cross-binary replay compatibility, even between builds with identical version numbers. - When changing a raw event or payload, update its writer, reducer, and affected fixtures together. Do not add migrations, legacy parsers, or tests for another binary's traces. A fallback needs a case the current writer can produce, such as a recording interrupted between two events. - Treat state.json as the consumer API…
OpenAIReads credentialsSkillopenai/codex/codex-rs/skills/src/assets/samples/imagegen/SKILL.md
Generate or edit raster images when the task benefits from AI-created bitmap visuals such as photos, illustrations, textures, sprites, mockups, or transparent-background cutouts. Use when Codex should create a brand-new image, transform an existing image, or derive visual variants from references, and the output should be a bitmap asset rather than repo-native code or vector. Do not use when the task is better handled by editing existing SVG/vector/code-native assets, extending an established icon or logo system, or building the visual directly in HTML/CSS/canvas.
Surging14 mentions in 2 weeks
46 projects use a version of this
OpenAISkillopenai/codex/codex-rs/skills/src/assets/samples/openai-docs/SKILL.md
API first-timers, Codex/Work Q&A. If the user already has an OpenAI API integration, skip this skill for API questions and use the developer docs. Read this skill before answering how Codex or ChatGPT Work behaves, where to find a feature, or how to configure or troubleshoot this app or coding agent. This includes conversation history, model and cache behavior, instruction precedence, permissions, and tool availability. Use for API onboarding only when the user is connecting to the OpenAI API for the first time. Skip action requests, such as scheduling an automation, and tasks fully answered by supplied text or data.
Steady14 mentions in 2 weeks
31 projects use a version of this
OpenAISkillopenai/codex/codex-rs/skills/src/assets/samples/review-agent/SKILL.md
Perform a read-only, defect-first review of a specified code change and return every actionable finding. Use when another agent delegates review of uncommitted changes, a base-branch diff, a commit, or custom review instructions.
Steady14 mentions in 2 weeks
12 projects use a version of this
OpenAISkillopenai/codex/codex-rs/skills/src/assets/samples/skill-creator/SKILL.md
Create or update a Codex skill with appropriately scoped instructions and any needed supporting resources.
Steady14 mentions in 2 weeks
189 projects use a version of this
Often used withtaskflow-inbox-triagemermaid-diagram-generatorecosystem-reference
OpenAIReads credentialsSkillopenai/codex/codex-rs/skills/src/assets/samples/skill-installer/SKILL.md
Install Codex skills into $CODEX_HOME/skills from a curated list or a GitHub repo path. Use when a user asks to list installable skills, install a curated skill, or install a skill from another repo (including private repos).
Steady14 mentions in 2 weeks
46 projects use a version of this
OpenAIAGENTS.mdopenai/codex/codex-rs/tui/src/bottom_pane/AGENTS.md
When changing the paste-burst or chat-composer state machines in this folder, keep the docs in sync: - Update the relevant module docs (chat_composer.rs and/or paste_burst.rs) so they remain a readable, top-down explanation of the current behavior. - Keep implementations/docstrings aligned unless a divergence is intentional and documented. Practical check: - After edits, sanity-check that docs mention only APIs/behavior that exist in code (especially the Enter/newline paths and disable_paste_burst semantics).
Steady14 mentions in 2 weeks
No other project uses it yet
Plain text files in a repository that tell a coding agent how the project works: commands to run, conventions to follow and things to avoid. CLAUDE.md, AGENTS.md, cursor rules and skills are the common kinds.
CLAUDE.md is read by Claude Code. AGENTS.md is an open format that Codex, Cursor and other agents read. Many projects keep one and point the other at it.
A folder with a SKILL.md that describes one capability, such as filling PDFs or reviewing code. The agent loads it only when the task calls for it.
Your agents already can, over MCP, limited to the files you're allowed to read. Searching them from this page is coming.
