One search for your own team's files and the public ecosystem. See how real projects write their agent instructions, and bring the good ideas home.
OpenAISkillopenai/plugins/plugins/nvidia/skills/omniverse-usd-performance-tuning/SKILL.md
Top-level workflow skill for USD performance diagnosis and optimization. Use for slow loading, high memory, low FPS, or 'optimize my scene' requests; delegates auth/runtime setup to Phase 0 owners.
OpenAISkillopenai/plugins/plugins/nvidia/skills/physical-ai-infrastructure-setup-and-resilient-scaling/SKILL.md
Use when the user wants to set up, scale, validate, or harden NVIDIA physical AI infrastructure for synthetic data generation workflows across local MicroK8s or Azure AKS, including Kubernetes clusters, inference endpoint deployment, OSMO deployment, workload submission readiness, and infrastructure failure recovery. Trigger keywords: physical ai infrastructure, resilient scaling, SDG infrastructure, microk8s, azure aks, NVCF deployment, NIM Operator, OSMO deploy, workflow scaling. Don't trigger for: OSMO log summarization or workload-only operations unless infrastructure setup, scaling, validation, or recovery is requested.
OpenAISkillopenai/plugins/plugins/nvidia/skills/physical-ai-neural-reconstruction/SKILL.md
Router for NVIDIA NuRec/NRE: USDZ rendering, NCore conversion, 3DGS, gRPC sensor sim, PhysicalAI HF datasets. Do NOT use for SimReady or infra setup.
OpenAISkillopenai/plugins/plugins/openai-ads-conversions/skills/openai-ads-conversions-setup/SKILL.md
Guide Codex through instrumenting or extending repositories with OpenAI Ads Measurement Pixel and optional Conversions API (CAPI). Use when adding Ads conversion tracking, browser pixel events, server-side conversion events, event_id deduplication, CAPI secret placeholders, incremental conversion coverage, or validating Ads conversion setup. Applies to local repositories and PR review contexts; prioritize safe, reviewable diffs and never place API keys or secrets in source code or client bundles.
OpenAISkillopenai/plugins/plugins/openai-developers/skills/agents-sdk/SKILL.md
Build, run, deploy, and evaluate OpenAI Agents SDK apps from Codex. Use when the user asks to create or adapt an Agents SDK app, build from a prompt or Codex thread, prepare a runnable agent prototype, add a focused eval harness, or deploy locally through the Agents SDK Deployment Manager.
OpenAISkillopenai/plugins/plugins/openai-developers/skills/build-chatgpt-app/SKILL.md
Build, scaffold, refactor, and troubleshoot ChatGPT Apps SDK applications that combine an MCP server and widget UI. Use when Codex needs to design tools, register UI resources, wire the MCP Apps bridge or ChatGPT compatibility APIs, apply Apps SDK metadata or CSP or domain settings, or produce a docs-aligned project scaffold. Prefer a docs-first workflow by invoking the openai-docs skill or OpenAI developer docs MCP tools before generating code.
OpenAISkillopenai/plugins/plugins/openai-developers/skills/chatgpt-app-submission/SKILL.md
Inspect a ChatGPT Apps MCP server codebase and generate chatgpt-app-submission.json with app info suggestions, tool hint justifications, test cases, and negative test cases, then report review-check findings and outputSchema warnings for submission review.
OpenAISkillopenai/plugins/plugins/openai-developers/skills/openai-api-troubleshooting/SKILL.md
Use when an OpenAI API request fails and Codex needs to classify the likely cause, explain the next step, and route to the right follow-up. Covers common runtime failures such as blocked outbound network access, invalid credentials, exhausted API quota or credits, rate limits, and model, project, or organization access issues; delegate key provisioning to openai-platform-api-key and current documentation lookups to openai-docs.
OpenAISkillopenai/plugins/plugins/openai-developers/skills/openai-platform-api-key/SKILL.md
Use when Codex is asked to build, run, test, debug, or configure an OpenAI-backed or provider-unspecified AI app, UI, script, CLI, generator, or tool, especially requests phrased only as "using AI" or generators driven by forms/user input; also use for OPENAI_API_KEY or sk-proj setup. Treat this as the credential gate: inspect safely, ask reuse-vs-new before API work, and never expose plaintext.
OpenAISkillopenai/plugins/plugins/plugin-eval/fixtures/minimal-plugin/skills/minimal-plugin-skill/SKILL.md
Minimal plugin skill fixture. Use when a test needs a valid plugin skill.
OpenAISkillopenai/plugins/plugins/plugin-eval/fixtures/minimal-skill/SKILL.md
Minimal example skill for plugin-eval tests. Use when the user wants a compact demonstration of a well-structured skill.
OpenAISkillopenai/plugins/plugins/plugin-eval/fixtures/multi-skill-plugin/skills/alpha/SKILL.md
Alpha fixture skill. Use when plugin-eval tests need one of two bundled skills.
OpenAISkillopenai/plugins/plugins/plugin-eval/fixtures/multi-skill-plugin/skills/beta/SKILL.md
Beta fixture skill. Use when plugin-eval tests need the second bundled skill.
OpenAISkillopenai/plugins/plugins/plugin-eval/skills/evaluate-plugin/SKILL.md
Evaluate a local Codex plugin in engineer-friendly language. Use when the user says "evaluate this plugin", "audit this plugin", "why did this score that way", "what should I fix first", "help me benchmark this plugin", or asks for a plugin-wide report before comparing versions.
OpenAISkillopenai/plugins/plugins/plugin-eval/skills/evaluate-skill/SKILL.md
Evaluate a local Codex skill in engineer-friendly terms. Use when the user says "evaluate this skill", "give me an analysis of the game dev skill", "audit this skill", "why did this score that way", "what should I fix first", or asks for a skill-specific report before benchmarking it.
OpenAISkillopenai/plugins/plugins/plugin-eval/skills/improve-skill/SKILL.md
Turn plugin-eval findings into a concrete rewrite brief for a Codex skill. Use when the user already evaluated a skill and now wants Codex to improve it, especially after asking what to fix first.
OpenAISkillopenai/plugins/plugins/plugin-eval/skills/metric-pack-designer/SKILL.md
Design custom metric packs for plugin-eval so teams can add local evaluation rubrics that emit schema-compatible checks and metrics. Use when the user wants their own evaluation criteria or visualizations.
OpenAISkillopenai/plugins/plugins/plugin-eval/skills/plugin-eval/SKILL.md
Help engineers evaluate a local skill or plugin, explain why it scored that way, show what to fix first, measure real token usage, benchmark starter scenarios, or decide what to run next. Use when the user says things like "evaluate this skill", "give me an analysis of the game dev skill", "why did this score that way", "what should I fix first", "measure the real token usage of this skill", or "what should I run next?".
OpenAISkillopenai/plugins/plugins/posthog/skills/posthog/SKILL.md
Analyze product data and manage product tooling in PostHog. Use when the user wants product analytics or insights, HogQL/SQL queries, feature flags, experiments and A/B tests, error tracking, session replay, surveys, LLM analytics, dashboards, data warehouse, or PostHog documentation.
OpenAISkillopenai/plugins/plugins/product-design/skills/audit/SKILL.md
Audit or critique a product flow, journey, workflow, funnel, onboarding path, checkout path, settings path, screen, or multi-step product experience by capturing screenshots first, then reporting UX, design, and accessibility findings inline from that evidence. Use Figma only when the user explicitly asks for a board. Use when the user asks to audit, review, critique, inspect, assess, analyze, evaluate, or give feedback on a product experience.
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.
