Borrowing it
Nothing to install: this file belongs to TheGoat395/Codex-Skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/TheGoat395/Codex-Skills/main/AGENTS.mdgit clone --depth 1 https://github.com/TheGoat395/Codex-SkillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/thegoat395/codex-skills/agents-md)<a href="https://agentmods.dev/instructions/thegoat395/codex-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/thegoat395/codex-skills/agents-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/thegoat395/codex-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/thegoat395/codex-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00346 | $0.00346 |
| Opus 5.5 | $0.00138 | $0.00138 |
| Sonnet 5.5 | $0.00069 | $0.00069 |
| Haiku 4.5 | $0.00035 | $0.00035 |
Grade A, and why
Codex-Skills AGENTS.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Repository Operating Notes
Codex-Skills is a public, Codex-first Agent Skills library. Keep the public core curated, installable, inspectable, and honest about evidence.
Required Checks
Before a release or pull request that changes skills, collections, scripts, docs, or workflows, run:
python3 scripts/validate_skills.py
python3 scripts/validate_public_package.py
python3 scripts/test_catalog.py
python3 scripts/test_skill_helpers.py
python3 scripts/install_skills.py --list-collections
python3 scripts/install_skills.py --dry-run
python3 -m py_compile scripts/*.py
git diff --check
Regenerate manifest.json and SKILL_INVENTORY.md when skill folders change.
Evidence Rules
- Label measured results, estimates, owner-only GitHub metrics, and derived calculations separately.
- Never invent users, forks, issues, benchmark results, testimonials, or adoption claims.
- Preserve the exact prompt, outputs, commands, and limitations for paired benchmarks.
- Do not present fictional values inside a demo mockup as repository telemetry.
- Treat browser, accessibility, performance, and security checks as unperformed until they actually run.
Change Hygiene
- Inspect the worktree before editing and use a branch for risky changes.
- Keep installer behavior explicit and preserve dry-run and backup-on-replace safeguards.
- Do not add secrets, private paths, credentials, generated caches, or machine-specific state.
- Before public commits, verify the repository author/committer identity is suitable for publication; do not rely on an automatically inferred machine address.
- Prefer focused changes that improve usefulness, safety, reproducibility, or documentation.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago Changed · +3 lines · +45 tokens per session c03d59447f40
- 2mo ago Changed · +1 lines · +7 tokens per session dc5fd220ef00
- 2mo ago First seen · 33 lines · 294 tokens per session scan A 67164b357c00
Codex-Skills AGENTS.md is an instructions file published in the GitHub repository TheGoat395/Codex-Skills (137 stars, last pushed 15d ago), licensed MIT. It adds 346 tokens to every session, about $0.0014 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Codex-Skills AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| Codex-Skills AGENTS.mdTheGoat395/Codex-Skills | Instructions file | 137 | 15d ago | MIT | A | 346 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |