codex-relay AGENTS.md

codex-relay AGENTS.md is an instructions file for Codex, OpenCode from josephbartlett/codex-relay. It costs 1,348 tokens per session, scanned A, original, MIT.

A repository guide for coding agents working on Codex Relay, a system that runs Codex through Slack. It defines safety rules, engineering practices, and how changes should be handled.

In plain words
What is it for?
Use it when modifying the repository to understand its architecture, protect local runtime files and secrets, follow TypeScript standards, and keep changes isolated.
Why use it?
It gives agents the project context and boundaries they need, reducing unsafe edits, leaked secrets, and inconsistent engineering work.

Instructions file for CodexOpenCode

Install

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.

agentmods
npx agentmods add instructions/josephbartlett/codex-relay/agents-md
Clone the repo
git clone --depth 1 https://github.com/josephbartlett/codex-relay

Made for: Codex, OpenCode.

Wrote 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.

agentmods badge for codex-relay AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/josephbartlett/codex-relay/agents-md.svg)](https://agentmods.dev/instructions/josephbartlett/codex-relay/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/josephbartlett/codex-relay/agents-md"><img src="https://agentmods.dev/badge/instructions/josephbartlett/codex-relay/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,348 This file is loaded in full into every session.
When invoked 1,348 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.01348 $0.01348
Opus 5 $0.00674 $0.00674
Sonnet 5 $0.00270 $0.00270
Haiku 4.5 $0.00135 $0.00135

Measured 3d ago against content hash 318acf76a8c2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

codex-relay 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 3d 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.

AGENTS.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Operating Guide

This repository is intended to be maintained by humans and coding agents. Agents must preserve repo hygiene, secrets hygiene, and release discipline from the beginning.

Prime Directive

Build Codex Relay as a production-shaped Slack control plane for local and self-hosted Codex execution. Favor durable, testable, documented changes over demo-only shortcuts.

Safety Rules

  • Never print, commit, move, overwrite, or normalize .env secrets.
  • Do not edit .env unless the user explicitly asks for a specific change.
  • Keep .codex-slack/, dist/, node_modules/, logs, worktrees, tokens, and generated local runtime state out of git.
  • Do not use danger-full-access, --yolo, or equivalent unsafe Codex execution defaults in product code.
  • Preserve workspace isolation: approved write tasks must run in session worktrees, not a user's active branch.
  • Do not revert user changes unless explicitly requested.

Engineering Standards

  • Use TypeScript with strict typechecking.
  • Keep Slack gateway, orchestrator, local runner, shared types, infra, and docs boundaries clear.
  • Prefer existing local patterns over new abstractions.
  • Add abstractions only when they remove real duplication or define a durable boundary.
  • Treat Slack messages, Codex prompts, command output, and diffs as sensitive data.
  • Make state transitions idempotent where Slack retries or duplicate button clicks are plausible.

Custody-First Workflow

  • Use Custody-First Orchestration for all non-trivial repository work.
  • Create or activate a machine-readable packet in docs/work-packets/ before starting a meaningful implementation, release, security, governance, or visual-asset chunk.
  • Keep packet ownership narrow: one owner, exact paths or named concerns, explicit non-goals, acceptance criteria, verification, risks, and handoff expectations.
  • Keep active/review/verify packet scopes disjoint. If two packets may touch the same files or concern, serialize the work.
  • Run npm run check:work-packets whenever packet state changes.
  • Do not mark a packet done without completed verification, evidence, handoff notes, reviewer/verifier, date, checks, and commit or artifact reference.
  • Record maintenance history in docs/MAINTENANCE_AUDIT.md and active status in docs/TASKS.md.
  • External Custody-First scaffold work is currently tabled. Do not edit any external scaffold repository unless the user explicitly reopens that project.

Read the full file on GitHub · 109 lines

Changes

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.

  1. 3d ago First seen · 109 lines · 1,348 tokens per session scan A 318acf76a8c2

Subscribe to this mod's changes

codex-relay AGENTS.md is an instructions file published in the GitHub repository josephbartlett/codex-relay (1 stars, last pushed 4mo ago), licensed MIT. It adds 1,348 tokens to every session, about $0.0067 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.