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/2.0.2npx skills add robium-ai/robium --skill 2.0.2git clone --depth 1 https://github.com/robium-ai/robiumWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/robium-ai/robium/2.0.2)<a href="https://agentmods.dev/skills/robium-ai/robium/2.0.2"><img src="https://agentmods.dev/badge/skills/robium-ai/robium/2.0.2.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00160 | $0.02316 |
| Opus 5 | $0.00080 | $0.01158 |
| Sonnet 5 | $0.00032 | $0.00463 |
| Haiku 4.5 | $0.00016 | $0.00232 |
Grade A, and why
skill-author 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 4d 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.
This is a copy
98% identical to skill-author — 51 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
skill-author
The meta-skill that governs how new robium skills get authored and how the catalog's quality bar gets enforced. It is the repo's authoring machinery: fresh authoring against the quality bar; absorption and refining live in the learning-loop skill, mining in the mining skill.
When to use this skill
- Creating a brand-new skill under
skills/<name>/from the template. - Auditing an existing skill against the quality bar, or running the validator before a commit.
- Tuning a skill's frontmatter
descriptionfor better trigger accuracy, or evaluating whether a skill fires on the phrasing it should. - Cross-reference: absorbing
learnings/notes or refining the catalog (prune/dedup/staleness): use thelearning-loopskill instead. Extracting reusable patterns out of example repos (this repo's own apps or external ones): use theminingskill instead. - Cross-reference: for building an actual robotics application (choosing a
stack, scaffolding a repo), use the
architectskill and the domain skills it routes to instead; this skill only edits skills, never application code.
Key directives
- Delegation posture: embed. This skill owns the authoring workflow outright; there is no good upstream skill for "how to write a robium skill," so the process lives here rather than being linked out.
- Knowledge goes to the lowest skill that can hold it : a Nav2 costmap
gotcha belongs in
nav2, notarchitect; a ROS 2 launch-file quirk belongs inros2, not a per-tool skill built on top of it. Never park knowledge one level higher than where it will actually be looked up. - Always run
scripts/validate_skills.pybefore committing any skill change , whether the change came from fresh authoring here, a learning-loop absorb, or a mining distillation. A skill that fails the validator is not done. - For eval design and description-wording tuning, wrap Claude's own
skill-creatorskill rather than reinventing evals or trigger-testing machinery. skill-author supplies the robium-specific quality bar and workflow; skill-creator supplies the generic eval tooling.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 4d ago First seen · 164 lines · 160 tokens per session scan A bb42451d596b
skill-author is a skill published in the GitHub repository robium-ai/robium (9 stars, last pushed 6d ago), licensed MIT. It adds 160 tokens to every session and 2,316 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to skill-author, differing in 51 lines, and is treated as a copy.
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