mujoco SKILL.md skillA

mujoco from robium-ai/robium is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add robium-ai/robium/mujoco@git:20260925.a82e512

Pins git:20260925.a82e512 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
robium-ai/robium
Path
skills/mujoco/SKILL.md
Versions recorded
6
Latest version
git:20260925.a82e512, committed Sep 25, 2026
First version recorded
Aug 3, 2026
Size
2,986 bytes
Repository stars
107
License
MIT

Build and debug MuJoCo robot simulations. First interactive robot tryouts start with architect's reference-app selection.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# MuJoCo

A plausible render proves little by itself. Follow the physical chain from
model through kinematics, actuation, contact, and observation.

## Start from the model

- For a first interactive tryout, new app, or first policy demo, read
  [architect](../architect/SKILL.md) before creating a scene, controller, or
  viewer or downloading a model collection. Reuse its compatible reference-app
  selection if already made. Existing-model edits, physics debugging, and
  explanations stay here.
- Read the MJCF and the pinned asset revision before adding control code. Check
  joint ranges, actuator limits, collision geometry, sites, masses, and the
  intended work surface.
- Prefer a maintained model from
  [MuJoCo Menagerie](https://github.com/google-deepmind/mujoco_menagerie), but
  verify it against the real robot and task envelope.
- Confirm gripper polarity, fingertip gap, and contact geometry empirically.
  Names and documentation can disagree with the model that actually runs.
- Use the current [MuJoCo documentation](https://mujoco.readthedocs.io/) for
  MJCF and Python APIs rather than carrying signatures forward from memory.

## Follow the physical chain
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add robium-ai/robium/mujoco@sha256:c2d79b9d5c4f2ead

The line at the top of this page pins the label git:20260925.a82e512, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_nogf5unjnognqg6c.svg)](https://markdownregistry.com/a/art_nogf5unjnognqg6c)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 6 versions of this file, between Aug 3, 2026 and Sep 25, 2026, about one every 11 days.

versioncommittedcommitsizeaudit
git:20260925.a82e512 latest2026-09-25 a82e512 2,986 BA view · diff
git:20260919.498ea4e2026-09-19 498ea4e 2,886 BA view · diff
git:20260918.06c60192026-09-18 06c6019 2,610 BA view · diff
git:20260907.863840e2026-09-07 863840e 2,387 BA view · diff
v1.0.22026-08-03 dbc1928 15,076 BA view · diff
v1.0.12026-08-03 d53502d 15,065 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2986 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

robium-ai/robium · 107 stars · license MIT · pushed 2026-10-07 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nogf5unjnognqg6c
GET https://markdownregistry.com/api/v1/resolve?ref=robium-ai/robium/mujoco
GET https://markdownregistry.com/api/v1/blob/c2d79b9d5c4f2eadb217e38308dcf63cd76d329039068cf4d2929269379af568

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in robium-ai/robium

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