foreman: Instructions file for Codex

AGENTS.md

foreman AGENTS.md is an instructions file for Codex, OpenCode from V-Songbird/foreman. It costs 1,371 tokens per session, scanned A, original, MIT.

A set of contributor instructions for the Foreman repository and its Foundry submodule. It covers shared packages, branches, release files, host-specific hooks, and development roadmaps.

In plain words
What is it for?
It is for guiding contributions, branch and release work, synchronized configuration, and runtime differences between the two coding-agent hosts.
Why use it?
It documents the repository rules developers must follow when changing code used by both Claude Code and Codex.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions .claude-plugin; mentions Claude Code; mentions Codex.

This is V-Songbird/foreman's own configuration. It tells Codex and OpenCode how to work on foreman itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything foreman configures →

Reuse

Borrowing it

Nothing to install: this file belongs to V-Songbird/foreman. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/V-Songbird/foreman/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/V-Songbird/foreman

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 foreman AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/v-songbird/foreman/agents-md/github.svg)](https://agentmods.dev/instructions/v-songbird/foreman/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/v-songbird/foreman/agents-md"><img src="https://agentmods.dev/badge/instructions/v-songbird/foreman/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.

agentmods 80×15 button for foreman AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/v-songbird/foreman/agents-md"><img src="https://agentmods.dev/badge/instructions/v-songbird/foreman/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,371 This file is loaded in full into every session.
When invoked 1,371 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.01371 $0.01371
Opus 5 $0.00685 $0.00685
Sonnet 5 $0.00274 $0.00274
Haiku 4.5 $0.00137 $0.00137

Measured today against content hash 9c657de1824d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-16, from the pricing page.

Security

Grade A, and why

foreman 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 today.

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 · 113 lines

How it starts

The opening of the file, as written. The whole thing — 113 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Working on Foreman

These are Foreman's contributor rules. Claude Code reads the same rules from .claude/rules/; when one changes, change both copies together. The Foundry roadmap rule is copied word for word from Foundry's .claude/rules/project-roadmap.md.

One package for Claude Code and Codex

main is Foreman's package branch: one plugin for Claude Code and Codex. It is not documentation-only. Make changes on a topic branch and merge them into main through a pull request. The separate releases ended with 2.7.0 and 3.0.4-codex.1, and their Claude and Codex branches were deleted on 2026-09-15. This repository is Foundry's Foreman submodule.

Keep one runtime, one skills/ tree with the five skills, one prompt-template.md, one README and one CHANGELOG. Claude Code reads .claude-plugin/plugin.json and hooks/hooks.json. Codex reads .codex-plugin/plugin.json, whose hooks field names hooks/codex-hooks.json. Register each host's events only in its own hook file. Code that behaves differently per host asks scripts/runtime.js which host is running; handoff wording that differs per host is a host="claude" or host="codex" block in prompt-template.md. Use each host's actual capabilities and document gaps instead of inventing tool APIs or lifecycle events. Inherit the executing model unless the user chooses one.

Reviewed increments stay a Codex feature until the owner decides otherwise. The shared assembler accepts review rows on both hosts, but Claude Code's skills do not offer the protocol, and the documentation says it is not available in Claude Code yet.

Preserve roadmap format 2 and records written by either host. Keep scripts dependency-free Node.js. One version covers both hosts: bump it in both .claude-plugin/plugin.json and .codex-plugin/plugin.json in the release commit, and a test keeps the two equal. Foundry's catalogs carry no version for Foreman; both pin the same main commit, and a release only moves their source.sha.

Read the full file on GitHub · 113 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. today First seen · 113 lines · 1,371 tokens per session scan A 9c657de1824d

Subscribe to this mod's changes

foreman AGENTS.md is an instructions file published in the GitHub repository V-Songbird/foreman (35 stars, last pushed today), licensed MIT. It adds 1,371 tokens to every session, about $0.0069 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 2026-09-16.

Related

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).

microsoft/vscode · 8,838 tokens

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,126 tokens

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,153 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,469 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens