What is warren AGENTS.md?

The main instruction guide for Warren, a system that runs AI coding agents as isolated workloads on infrastructure controlled by an operator. It explains the runtime, sandbox options, project settings, and Git delivery.

Use it to understand agent adapters, run environments such as containers or Kubernetes pods, workspace branches, project configuration, and optional pull-request or tracker actions.

It gives agents the project's architecture and operating rules, including how runs are isolated, managed, recovered, and connected to Git workflows.

How jayminwest/warren configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to jayminwest/warren. 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/jayminwest/warren/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/jayminwest/warren

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/jayminwest/warren/agents-md/github.svg)](https://agentmods.dev/instructions/jayminwest/warren/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/jayminwest/warren/agents-md"><img src="https://agentmods.dev/badge/instructions/jayminwest/warren/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/jayminwest/warren/agents-md"><img src="https://agentmods.dev/badge/instructions/jayminwest/warren/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 12,620 This file is loaded in full into every session.

When invoked 12,620 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.

Model	Per session	Once invoked
Fable 5.1	$0.12620	$0.12620
Opus 5.5	$0.05048	$0.05048
Sonnet 5.5	$0.02524	$0.02524
Haiku 4.5	$0.01262	$0.01262

Measured 28d ago against content hash e9b16346a84f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

warren 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 28d 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 · 975 lines

How it starts

The opening of the file, as written. The whole thing — 975 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

This file is the canonical instruction doc for AI coding agents working in this repo, following the agents.md convention. CLAUDE.md is a symlink to this file, so one document serves every harness and there is nothing to drift.

What this project is

Coding agents are tools. Warren turns them into infrastructure.

It runs agent harnesses as isolated workloads on infrastructure the operator controls. Warren owns the workspace, lifecycle, limits, events, intervention, recovery, and Git delivery.

AgentRuntimeAdapter keeps the kernel harness-neutral. A harness needs an adapter before the runtime can drive it. The current distribution ships Pi and Claude Code adapters.

Runtime providers place each run in a local bwrap sandbox on Linux or sandbox-exec sandbox on macOS, a sibling Docker container, or a Kubernetes pod.

The kernel guarantees a pushed workspace branch. Project settings can add PR creation and tracker reactions around that boundary.

The fresh-install path is standalone. A user with a GitHub URL and the model credential for a shipped harness can dispatch a run end-to-end with no other os-eco tooling. Around that kernel, two os-eco data-plane tools integrate as opt-in features, not required infrastructure.

mulch — persistent agent memory across runs. Activated by a .mulch/ directory in the project.
seeds — the integrated issue queue agents read from and write to. Activated by a .seeds/ directory. Seeds is implementation #1 of the IssueTracker seam (src/tracker/contract.ts), with external trackers reachable through the RemoteTracker bridge — see docs/design/issue-tracker.md.

The agent registry is entirely inline. BUILTIN_AGENTS (src/registry/builtins/) ships seven agents and boot seeds them into the agents table on every start: claude-code, pi, planner, nightwatch, bugwatch, pr-fixer, and healer. There is no external agent library. GET /agents still reports source: "builtin" | "library" provenance. The library arm survives only for legacy rows.

Read the full file on GitHub · 975 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.

28d ago Changed · +56 lines · +958 tokens per session e9b16346a84f
29d ago Changed · +85 lines · +1,267 tokens per session d4d9f940f3a4
1mo ago Changed · +5 lines · +99 tokens per session 1e616adc9b3a
2mo ago Changed · +5 lines · +88 tokens per session 5a6ec16ef3f6
2mo ago Changed · +2 lines · +34 tokens per session d63b6431f5db
2mo ago First seen · 822 lines · 10,174 tokens per session scan A c0cc40ae2db7

Subscribe to this mod's changes

warren AGENTS.md is an instructions file published in the GitHub repository jayminwest/warren (513 stars, last pushed 7d ago), licensed MIT. It adds 12,620 tokens to every session, about $0.0505 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 2026-08-30.

Autonomous Agents agent-orchestration ai-agents bun claude control-plane

warren AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
warren AGENTS.mdjayminwest/warren	Instructions file	513	7d ago	MIT	A	12,620	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

warren: Instructions file for Codex