reachy_mini: Instructions file for Codex

AGENTS.md

reachy_mini AGENTS.md is an instructions file for Codex, OpenCode from pollen-robotics/reachy_mini. It costs 5,137 tokens per session, scanned A, original, Apache-2.0.

Project instructions for building Reachy Mini applications, including rules for AI coding assistants and guidance on JavaScript and Python app types.

In plain words
What is it for?
Use them when starting work on a Reachy Mini project, checking local instructions, choosing JavaScript or Python, or explaining development steps to a user.
Why use it?
They give an assistant the project’s expected workflow, local setup checks, teaching style, and default choice of app technology.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

This is pollen-robotics/reachy_mini's own configuration. It tells Codex and OpenCode how to work on reachy_mini 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 reachy_mini configures →

About the project

pollen-robotics/reachy_mini is the SDK and development project for Reachy Mini, an open-source expressive robot for hackers and AI builders. It supports building robot behaviors and applications with Python or JavaScript, including simulated robots and integrations with language models. The catalogue add-ons provide coding guidance for the Reachy Mini SDK.

pollen-robotics/reachy_mini · 1,643 stars · on GitHub · hf.co

Reuse

Borrowing it

Nothing to install: this file belongs to pollen-robotics/reachy_mini. 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/pollen-robotics/reachy_mini/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/pollen-robotics/reachy_mini

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 5,137 This file is loaded in full into every session.
When invoked 5,137 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 $0.05137 $0.05137
Opus 5.5 $0.02055 $0.02055
Sonnet 5.5 $0.01027 $0.01027
Haiku 4.5 $0.00514 $0.00514

Measured 16d ago against content hash 679a12fe6088, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

reachy_mini 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 16d 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 · 322 lines

How it starts

The opening of the file, as written. The whole thing — 322 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reachy Mini Development Guide for AI Agents

This guide helps AI agents assist users in developing Reachy Mini applications.


Agent Behavior

FIRST: Check for agents.local.md

Before doing anything else, search for agents.local.md in your working directory (the folder where the app lives or will be created — not the reachy_mini repo clone):

IF agents.local.md exists:
    Read it immediately
    It contains user configuration and session context
ELSE:
    → Python path: run skills/setup-environment.md to set up the environment
    → JS path: skip it (Node.js is all you need), just create agents.local.md in that working directory

This file stores the user's robot type, preferences, and setup status. Always check it first.

Be a Teacher

Unless the user explicitly requests otherwise:

  • Explain concepts as you go
  • Encourage questions ("Let me know if you'd like more detail on any of this")
  • Guide non-technical users through each step
  • Don't assume prior knowledge

Two App Flavours — Default to JS, Python for developers

Reachy Mini supports two app types. Default to a JS (Live/Web) app unless the user explicitly wants on-robot Python, or has a need that only Python can cover (heavy on-robot compute, rich hardware access, deterministic real-time control loops, or bundled offline LAN tooling).

Flavour Default for Where it runs Constraints
JS app (recommended) End-users, shareable-by-URL experiences, anyone who wants "open a link, use the robot". Remote launch, zero-install, streaming A/V UIs. Static HF Space; reaches the robot over WebRTC via the central signaling server. Runs only while a browser tab is open; needs internet and an HF account for every session; one controlling session per robot. Works on Wireless and Lite.
Python app Developer tools, on-robot control loops, heavy motion sequencing, offline/LAN. Robot owner's machine (laptop / CM4), optionally with a bundled web UI. Pick it when the app must run unattended or always-on, work without internet or keep data inside the home network, or be reachable by other local services (e.g. Home Assistant).

Read the full file on GitHub · 322 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. 16d ago Changed · +6 lines · +269 tokens per session 679a12fe6088
  2. 17d ago Changed · +86 tokens per session 2bae3a386388
  3. 24d ago Changed · +1 lines · +21 tokens per session df4174d2411d
  4. 1mo ago Changed · +55 tokens per session 65c7e6bf7ffd
  5. 2mo ago First seen · 315 lines · 4,706 tokens per session scan A da3752c5447c

Subscribe to this mod's changes

reachy_mini AGENTS.md is an instructions file published in the GitHub repository pollen-robotics/reachy_mini (1,643 stars, last pushed yesterday), licensed Apache-2.0. It adds 5,137 tokens to every session, about $0.0205 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.

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