Home / robium-ai / robium · skills/mujoco/SKILL.md · GitHub

mujoco skillA

mujoco is agent-read markdown (skill) from robium-ai/robium: Build and debug lightweight robot manipulation simulations with MuJoCo..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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 new manipulation app or first policy demo, read
  [architect](../architect/SKILL.md) before creating a scene, controller, or
  viewer. 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

Latest version
mdr add robium-ai/robium/mujoco@git:20260919.498ea4e
Exact content
mdr add robium-ai/robium/mujoco@sha256:ff4c6957190ae5d0

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

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Versions

versioncommittedcommitsizeaudit
git:20260919.498ea4e latest2026-09-19 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. Deterministic, no model, 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 (2886 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 · 14 stars · license MIT · pushed 2026-09-22 · 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/ff4c6957190ae5d04b33391b5d45d8ef899d662151af1fa2cf75217297954564

Your agent 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.

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