Borrowing it
Nothing to install: this file belongs to sorryorc/mcp-codex-worker. 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/sorryorc/mcp-codex-worker/main/AGENTS.mdgit clone --depth 1 https://github.com/sorryorc/mcp-codex-workerWrote 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/sorryorc/mcp-codex-worker/agents-md)<a href="https://agentmods.dev/instructions/sorryorc/mcp-codex-worker/agents-md"><img src="https://agentmods.dev/badge/instructions/sorryorc/mcp-codex-worker/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/sorryorc/mcp-codex-worker/agents-md"><img src="https://agentmods.dev/badge/instructions/sorryorc/mcp-codex-worker/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 | $0.00389 | $0.00389 |
| Opus 5.5 | $0.00156 | $0.00156 |
| Sonnet 5.5 | $0.00078 | $0.00078 |
| Haiku 4.5 | $0.00039 | $0.00039 |
Grade A, and why
mcp-codex-worker 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 2mo 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
AGENTS.md - Codex Worker Routing Rules
This repository exists to reduce premium Codex context usage. Treat worker routing as part of the task, not as an optional optimization.
Routing Contract
- Before repository-wide search, bulk file reads, review, diffs, test output, or
implementation loops, expose
mcp__codex_async_workertools withtool_searchif they are not already callable. - Use
mcp__codex_async_worker.searchfor repo discovery instead of main-threadrgwhen the output could be more than a few lines. - Use
mcp__codex_async_worker.read_packoranalyzefor file-reading and explanation tasks instead of reading whole files into the main thread. - Use
mcp__codex_async_worker.shellwithdigest:truefor tests, builds, lint, and noisy commands. - Use
mcp__codex_async_worker.diff_digestandreviewbefore ingesting full diffs. - Use
mcp__codex_async_worker.startfor implementation loops. Preferinclude_diff:false, scoped paths, and explicit checks.
Main-Thread Budget
Keep the main Codex thread for planning, decisions, small verification, and final review. Do not use main-thread shell or file reads as a substitute for worker tools when the task is large enough to affect context usage.
Audits
- Run
npm run codex:audit -- --since-minutes=60when checking whether recent work is being routed through the worker. - Run
npm run stats:gatefor the existing metrics gate. - Remember that worker metrics can only see worker/tool audit rows. Direct main-thread file reads, shell output, and chat context are outside the metrics file unless explicitly instrumented.
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.
- 2mo ago First seen · 36 lines · 389 tokens per session scan A b11b3cd8904f
mcp-codex-worker AGENTS.md is an instructions file published in the GitHub repository sorryorc/mcp-codex-worker (2 stars, last pushed 1mo ago), licensed MIT. It adds 389 tokens to every session, about $0.0016 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 2026-08-31.
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