Borrowing it
Nothing to install: this file belongs to JakubMikolajek/codex-skills-collection. 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/JakubMikolajek/codex-skills-collection/main/AGENTS.mdgit clone --depth 1 https://github.com/JakubMikolajek/codex-skills-collectionWrote 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/jakubmikolajek/codex-skills-collection/agents-md)<a href="https://agentmods.dev/instructions/jakubmikolajek/codex-skills-collection/agents-md"><img src="https://agentmods.dev/badge/instructions/jakubmikolajek/codex-skills-collection/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/jakubmikolajek/codex-skills-collection/agents-md"><img src="https://agentmods.dev/badge/instructions/jakubmikolajek/codex-skills-collection/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 | $0.04025 | $0.04025 |
| Opus 5 | $0.02013 | $0.02013 |
| Sonnet 5 | $0.00805 | $0.00805 |
| Haiku 4.5 | $0.00402 | $0.00402 |
Grade A, and why
codex-skills-collection 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 10d 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.
How it starts
The opening of the file, as written. The whole thing — 398 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codex Workflow Contract
This repository provides a Codex-first delivery workflow and reusable skills.
Default Workflow
Always follow:
- Research
- Plan
- Implement
- Review
Do not skip phases unless the user explicitly asks to skip them.
Commands
These command-like requests are supported:
/research <task-description>/plan <task-description>/docs-flow <task-description>/implement <task-description>/implement-ui <task-description>/review-ui/review <task-description>/e2e <task-description>/code-quality-check/debug <bug-description>/handoff/changelog/context/new-skill <skill-name>/multi-repo <task-description>/test-strategy <module-or-project>/learn/obsidian <session|adr|debug|knowledge>
Expected Outputs
/research: Research summary, assumptions, identified gaps, clarification questions, and next-step recommendation./plan: Phase-based implementation plan with acceptance criteria and explicit quality gates./docs-flow: Structured documentation artifact plus execution flow artifact (Mermaid + phase checklist + gates)./implement: Scoped implementation aligned with the plan, including test evidence./implement-ui: Iterative UI implementation with verification loop and mismatch fixes./review-ui: Read-only PASS/FAIL verification report with precise diff table./review: Findings-first review report ordered by severity (bugs, regressions, risk, test gaps)./e2e: Scenario list, Page Object and test implementation guidance, execution report expectations./code-quality-check: Prioritized quality report with concrete action plan./debug: Debug Report (reproduce → isolate → trace → hypothesize → verify) followed by root-cause fix with regression test./handoff:.codex-handoff.mdwith status, in-progress, blocked, decisions, files modified, next steps, open questions. Followed automatically by/obsidian session./changelog: CHANGELOG block in Keep a Changelog format with version bump recommendation./context: Session Context Block (stack, test runner, package manager, conventions, constraints, uncertainties)./new-skill: Scaffolded SKILL.md with quality gates enforced, routing tree updated in same task./multi-repo: Per-repo change plan with contract-owner-first ordering, cross-repo impact map, mandatory handoff./test-strategy:test-strategy.mdwith risk map, test levels per zone, coverage targets, tooling, and quality gates./learn: Appended entries in per-skillreferences/failure-patterns.mdand globalskills/routing/FAILURES.md./obsidian <type>: Markdown note written directly to Obsidian vault — type determines template and destination folder (session →01-projects/{slug}/sessions/, adr →02-adr/, debug →04-debug/, knowledge →03-skills/domains/).
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.
- 10d ago First seen · 398 lines · 4,025 tokens per session scan A e4cd9d1ea4db
codex-skills-collection AGENTS.md is an instructions file published in the GitHub repository JakubMikolajek/codex-skills-collection (5 stars, last pushed 5d ago), licensed MIT. It adds 4,025 tokens to every session, about $0.0201 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 2026-08-31.
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