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 skills/robium-ai/robium/alphanpx skills add robium-ai/robium --skill alphagit clone --depth 1 https://github.com/robium-ai/robiumWhat 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 | $0.00025 | $0.00058 |
| Opus 5 | $0.00013 | $0.00029 |
| Sonnet 5 | $0.00005 | $0.00012 |
| Haiku 4.5 | $0.00003 | $0.00006 |
Grade A, and why
alpha 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.
What it actually says
alpha
Body content is ignored by the catalog builder.
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 · 13 lines · 25 tokens per session scan A 604c0e648035
alpha is a skill published in the GitHub repository robium-ai/robium (9 stars, last pushed 4d ago), licensed MIT. It adds 25 tokens to every session and 58 once invoked, about $0.0001 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 2026-08-31.
Other skills, from other repositories
ros2-microros
Skill "ros2-microros" from Leehyunbin0131/claude-ros2-skills, covering micro-ros instructions (ubuntu 24.04 lts & ros 2 jazzy), 1. architecture, 2. documentation entry points, 3. key concepts & patterns and a. embedded client node setup (rclc in c).
ros2-troubleshooting
Diagnose ROS 2 Jazzy faults that reading the code cannot settle: QoS mismatch, sensor-mount and frame errors (REP 103/105), and odometry calibrated against CAD instead of the floor. Ships four runnable pass/fail checks.
gazebo-mcp
Gazebo / gz-sim worlds, models, poses (mock + live bridge). CLI gazebo-mcp + MCP stdio serve. Use when the user mentions gazebo-mcp, /gazebo-mcp, or related domain work. One-command Grok install from GitHub.
attach-end-effector
Mount an end-effector (parallel-jaw gripper, dexterous hand, suction tool, etc.) on a robot arm by attaching its MJCF to the arm's attachmentsite via MuJoCo's MjSpec API. Use when combining an arm MJCF and an end-effector MJCF into a single combined model. Handles known gotchas the underlying script doesn't: mesh…
urdf-to-mjcf
Use when bringing a URDF robot, hand, or CAD-generated model into MuJoCo MJCF and no hand-tuned upstream MJCF exists.
mjcf-to-urdf
Convert an MJCF (MuJoCo's XML format) to URDF for downstream consumers that don't speak MJCF (RViz, pinocchio, ROS-based motion planning, etc.). The conversion is lossy — constraints, position actuators, contact excludes, and keyframes are all dropped. Use this skill ONLY when a URDF-only consumer needs the kinematic…