Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/thegoat395/codex-skills/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.svg" alt="Measured on agentmods" 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 | $0.00294 | $0.00294 |
| Opus 5 | $0.00147 | $0.00147 |
| Sonnet 5 | $0.00059 | $0.00059 |
| Haiku 4.5 | $0.00029 | $0.00029 |
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 6d 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/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.
- 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.
- 6d 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 (121 stars, last pushed 4d ago), licensed MIT. It adds 294 tokens to every session, about $0.0015 per session on Opus 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.
Other instructions, from other repositories
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sniff AGENTS.md
AGENTS.md instructions for Aboudjem/sniff, covering agents.md: sniff, what this repo is, how an agent should use sniff, handling the playwright setup gate and finding output schema.
give-me-job AGENTS.md
Instructions for kyoungbinkim/give-me-job, covering give-me-job repository instructions, default workflow, skill routing, working on this repository and development loop.