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/dtdkvn/codex-oi/agents-mdgit clone --depth 1 https://github.com/Dtdkvn/codex-oiWhat 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 | $0.01510 | $0.01510 |
| Opus 5 | $0.00755 | $0.00755 |
| Sonnet 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 2d 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.
- 2d 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 3mo ago), licensed MIT. It adds 1,510 tokens to every session, about $0.0076 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.
Other instructions, from other repositories
codemap-skill AGENTS.md
Instructions for Asixa/codemap-skill, covering codemap — agent instructions, read these first, non-negotiable rules and the scripts (deterministic, python 3 stdlib, no install).
core copilot-instructions.md
Instructions for asdecided/core: These decisions are already accepted. Do not re-open or contradict them; ask the AsDecided MCP tools (getartifact, searchartifacts) for the full text before proposing a change that touches one.
PromptHub AGENTS.md
AGENTS.md instructions for legeling/PromptHub, covering prompthub — project context & development rules, 0. agent operating contract, 0.1 source-of-truth lookup order, 0.2 mandatory change gate and 0.3 existing-feature modification rule.
blurt AGENTS.md
Instructions for satyaborg/blurt, covering agents.md, what is blurt, commands, dev install and run.
Tarantul CLAUDE.md
Instructions for FarkhodovIslom/Tarantul, covering claude.md, project, commands, conventions and architecture.
kleinanzeigen-reader CLAUDE.md
Instructions for its-me-prash/kleinanzeigen-reader, covering claude.md — kleinanzeigen-reader, what this repo is, auto-load instructions for claude code, quick command reference and fetch a listing.