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/array-ventures/coworker/agents-mdgit clone --depth 1 https://github.com/Array-Ventures/coworkerWhat 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 | $0.00758 | $0.00758 |
| Opus 5 | $0.00379 | $0.00379 |
| Sonnet 5 | $0.00152 | $0.00152 |
| Haiku 4.5 | $0.00076 | $0.00076 |
Grade A, and why
coworker 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 — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This document provides guidance for AI coding agents working in this repository.
CRITICAL: Mastra Skill Required
BEFORE doing ANYTHING with Mastra code or answering Mastra questions, load the Mastra skill FIRST.
See Mastra Skills section for loading instructions.
Project Overview
This is a Mastra project written in TypeScript. Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.
Commands
Use these commands to interact with the project.
Installation
npm install
Development
Start the Mastra Studio at localhost:4111 by running the dev script:
npm run dev
Build
In order to build a production-ready server, run the build script:
npm run build
Project Structure
Folders organize your agent's resources, like agents, tools, and workflows.
| Folder | Description |
|---|---|
src/mastra |
Entry point for all Mastra-related code and configuration. |
src/mastra/agents |
Define and configure your agents - their behavior, goals, and tools. |
src/mastra/workflows |
Define multi-step workflows that orchestrate agents and tools together. |
src/mastra/tools |
Create reusable tools that your agents can call |
src/mastra/mcp |
(Optional) Implement custom MCP servers to share your tools with external agents |
src/mastra/scorers |
(Optional) Define scorers for evaluating agent performance over time |
src/mastra/public |
(Optional) Contents are copied into the .build/output directory during the build process, making them available for serving at runtime |
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 · 89 lines · 758 tokens per session scan A 8c780183c02d
coworker AGENTS.md is an instructions file published in the GitHub repository Array-Ventures/coworker (41 stars, last pushed 6mo ago), licensed Apache-2.0. It adds 758 tokens to every session, about $0.0038 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 2026-08-30.
Other instructions, from other repositories
LobsterAI AGENTS.md
AGENTS.md instructions for netease-youdao/LobsterAI, covering agents.md, instruction scope, project snapshot, cowork vs openclaw and commands.
bitterbot-desktop AGENTS.md
Instructions for Bitterbot-AI/bitterbot-desktop, covering bitterbot — repository guidelines, what is bitterbot?, what makes bitterbot different, 1. memory system (src/memory/) and 2. dream engine (src/memory/dream-engine.ts).
orbit CLAUDE.md
Instructions for schmitech/orbit, covering claude.md, project overview, commands, setup and running the server.
hivekeep CLAUDE.md
Instructions for MarlBurroW/hivekeep, covering hivekeep, documentation map, tech stack, key conventions and naming.
hope-agent AGENTS.md
Instructions for shiwenwen/hope-agent, covering hope agent, 安全红线, 提交前检查（强制）, 分支与发布 and 设置约定.
opencode-chat-bridge AGENTS.md
Instructions for ominiverdi/opencode-chat-bridge: You are a helpful assistant in a chat interface.