agent-maestro: Instructions file for Codex

AGENTS.md

agent-maestro AGENTS.md is an instructions file for Codex, OpenCode from Joouis/agent-maestro. It costs 1,512 tokens per session, scanned A, original, MIT.

Repository instructions for AI coding agents working on the Agent Maestro project. They describe the project's purpose, folder layout, tools, versions, and commands so an agent can make changes in the expected way.

In plain words
What is it for?
Use them when asking an AI coding agent to inspect, modify, test, or extend the Agent Maestro TypeScript and VS Code extension codebase.
Why use it?
They give an agent project-specific context that is not obvious from the source files alone. This helps it follow the repository's structure and development requirements.

Instructions file for CodexOpenCode

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

This is Joouis/agent-maestro's own configuration. It tells Codex and OpenCode how to work on agent-maestro 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 agent-maestro configures →

Reuse

Borrowing it

Nothing to install: this file belongs to Joouis/agent-maestro. 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/Joouis/agent-maestro/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/Joouis/agent-maestro

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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.

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Per session 1,512 This file is loaded in full into every session.
When invoked 1,512 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 $0.01512 $0.01512
Opus 5.5 $0.00605 $0.00605
Sonnet 5.5 $0.00302 $0.00302
Haiku 4.5 $0.00151 $0.00151

Measured 1mo ago against content hash 0fc80f196604, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-maestro 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 1mo 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 · 103 lines

How it starts

The opening of the file, as written. The whole thing — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Guidance for AI coding agents working in this repository. Human contributors should read README.md first.

Project overview

Agent Maestro is a VS Code extension that:

  • Orchestrates third-party AI coding extensions (Cline, Roo Code, Kilo Code, etc.) via internal adapters.
  • Exposes a local proxy server (default port 23333) presenting OpenAI-, Anthropic-, and Gemini-compatible APIs backed by the VS Code Language Model API (GitHub Copilot models), used by clients such as Claude Code, Codex, and Gemini.
  • Runs an MCP server (default port 23334) for Model Context Protocol clients.

Primary language: TypeScript (ESM). Runtime and package-manager requirements are defined in package.json (engines and packageManager).

Repository layout

  • src/extension.ts — extension entry point.
  • src/commands/ — VS Code command handlers registered in package.json.
  • src/core/ — adapters for third-party extensions (ClineAdapter, RooCodeAdapter, etc.) and the central controller.
  • src/server/ — proxy + MCP servers.
    • routes/anthropicRoutes.ts, routes/openai/ — API-compatible endpoints.
    • schemas/ — Zod request/response schemas (also drive OpenAPI).
    • utils/ — request conversion helpers between Anthropic/OpenAI and the VS Code LM API.
  • src/utils/ — shared utilities (logger, config, chat-model resolution, Claude Code helpers).
  • src/test/ — Mocha tests run via @vscode/test-electron.
  • docs/README.md — index of current guides, runbooks, and historical designs; website/ contains the landing page.
  • .changeset/ — pending release notes (Changesets).

Known upstream (VS Code) issues

  • Image MIME re-encode — the VS Code LM API re-encodes images to PNG when both dimensions exceed 768px without updating their declared MIME type, which breaks providers that sniff bytes (e.g. Anthropic vision). Worked around in src/server/utils/imageMime.ts. Re-check this whenever bumping engines.vscode — if upstream starts preserving the source format, the workaround must be removed or it will cause a new mismatch. See docs/vscode-image-mime-defect.md.

Read the full file on GitHub · 103 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. 1mo ago Changed · +14 tokens per session 0fc80f196604
  2. 1mo ago First seen · 103 lines · 1,498 tokens per session scan A c47d137ce603

Subscribe to this mod's changes

agent-maestro AGENTS.md is an instructions file published in the GitHub repository Joouis/agent-maestro (209 stars, last pushed 13d ago), licensed MIT. It adds 1,512 tokens to every session, about $0.0060 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 2026-09-04.

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