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 skills add robhowley/py-pit-skills --skill uvgit clone --depth 1 https://github.com/robhowley/py-pit-skillsWrote 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/robhowley/py-pit-skills/uv)<a href="https://agentmods.dev/skills/robhowley/py-pit-skills/uv"><img src="https://agentmods.dev/badge/skills/robhowley/py-pit-skills/uv.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 5.1 | $0.00041 | $0.01421 |
| Opus 5 | $0.00020 | $0.00711 |
| Sonnet 5 | $0.00008 | $0.00284 |
| Haiku 4.5 | $0.00004 | $0.00142 |
Grade A, and why
uv 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 311 lines — stays where its author put it; the contents beside it link to each section on GitHub.
uv
Use this skill when working with Python projects that use or should use uv.
This skill ensures instructions follow uv-native workflows and avoids common mistakes when mixing Python packaging tools.
Apply this skill when the user:
- mentions
uv - asks about Python dependency management
- asks about environment setup
- asks how to run Python commands or tests
- wants to migrate from pip / poetry / pip-tools
- needs help debugging a broken Python environment
- wants correct Python CLI tool usage
Do not apply when:
- the task is unrelated to Python tooling
- the user explicitly wants a different ecosystem (conda, poetry, pip) without discussing uv
- the question is purely about application design rather than tooling workflow
Invocation heuristics
Prefer this skill when the user:
- mentions
uv - asks about Python dependency or environment management
- shows
pyproject.toml,uv.lock, orrequirements.txt - asks how to run tests, scripts, or tools in a uv-managed repo
- is migrating from pip, poetry, or pip-tools to uv
Do not prefer this skill when:
- the user explicitly wants conda, poetry, or raw pip workflows
- the task is about app architecture rather than Python tooling
Hard constraints
In a uv-managed workflow, never default to:
pip install ...python -m venv ...source .venv/bin/activatepoetry add ...poetry run ...uv pip install ...as the standard dependency workflow
Only use or mention those when the user explicitly asks for them, or when explaining migration/interoperability constraints.
If the repository already mixes workflows, call that out explicitly and recommend a single consistent path.
Mission
Provide correct, minimal uv-native workflows.
The skill should:
- enforce uv workflow invariants
- detect mixed-tool anti-patterns
- give minimal copy-pasteable commands
- preserve repo structure unless migration is explicitly requested
- prefer correctness over verbosity
Do not recommend unrelated packages, frameworks, or project architecture.
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.
- 7d ago First seen · 311 lines · 41 tokens per session scan A 360ce480e0d1
uv is a skill published in the GitHub repository robhowley/py-pit-skills (5 stars, last pushed 5mo ago), licensed MIT. It adds 41 tokens to every session and 1,421 once invoked, about $0.0002 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.
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