Borrowing it
Nothing to install: this file belongs to Dtdkvn/codex-oi. 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/Dtdkvn/codex-oi/main/AGENTS.mdgit clone --depth 1 https://github.com/Dtdkvn/codex-oiWrote 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/dtdkvn/codex-oi/agents-md)<a href="https://agentmods.dev/instructions/dtdkvn/codex-oi/agents-md"><img src="https://agentmods.dev/badge/instructions/dtdkvn/codex-oi/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/dtdkvn/codex-oi/agents-md"><img src="https://agentmods.dev/badge/instructions/dtdkvn/codex-oi/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 | $0.01510 | $0.01510 |
| Opus 5.5 | $0.00604 | $0.00604 |
| Sonnet 5.5 | $0.00302 | $0.00302 |
| Haiku 4.5 | $0.00151 | $0.00151 |
Grade A, and why
codex-oi 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.
How it starts
The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md — codex-oi
Cross-tool agent rules file. Recognized by Antigravity (v1.20.3+), Cursor, Codex CLI, Claude Code, and any tool that adopts the AGENTS.md convention. Use this file to teach your coding agent when and how to invoke
codex-oifor a second opinion.
This repo IS codex-oi. The note below is meant to be copied into the
AGENTS.md of any project that wants the agent to use codex-oi as a
second-opinion engine. For working on this repo itself, see
CLAUDE.md (if present) and SKILL.md.
Copy-paste block — drop into your project's AGENTS.md
## Second-opinion reviews via codex-oi
This repo has `codex-oi` available — a Codex CLI bridge that gives a
second AI opinion on code without leaving the terminal. Use it
proactively in these situations:
1. **Before committing a non-trivial diff** — run a closeout check:
```bash
~/.codex-oi/scripts/codex-oi.sh closeout
-
When the user asks for "a second opinion", "audit", or "review by another model" — pick the matching mode:
~/.codex-oi/scripts/codex-oi.sh review <file-or-folder> "<focus>" ~/.codex-oi/scripts/codex-oi.sh plan <plan.md> ~/.codex-oi/scripts/codex-oi.sh audit # full project sweep, cost-warned -
After landing a non-trivial commit — retrospective:
~/.codex-oi/scripts/codex-oi.sh recommit HEAD
Treat the output as advisory only. Verify every finding against the real code path. Reject speculative or out-of-scope claims with a one-line reason. Do not auto-apply fixes.
Windows-native (no WSL): use scripts\codex-oi.ps1 with the same modes.
---
## Pluggable second-opinion engine (`--engine` flag)
Default engine is OpenAI Codex. Other engines available via `--engine`:
```bash
~/.codex-oi/scripts/codex-oi.sh review file.py "focus" --engine gemini
Currently shipped adapters (Bash dispatcher only; PowerShell mirror TODO):
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 · 150 lines · 1,510 tokens per session scan A 9ab79a052042
codex-oi AGENTS.md is an instructions file published in the GitHub repository Dtdkvn/codex-oi (2 stars, last pushed 5mo ago), licensed MIT. It adds 1,510 tokens to every session, about $0.0060 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.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
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