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/hyperb1iss/hyperskills/uvnpx skills add hyperb1iss/hyperskills --skill uvgit clone --depth 1 https://github.com/hyperb1iss/hyperskillsWrote 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/hyperb1iss/hyperskills/uv)<a href="https://agentmods.dev/skills/hyperb1iss/hyperskills/uv"><img src="https://agentmods.dev/badge/skills/hyperb1iss/hyperskills/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 | $0.00100 | $0.03023 |
| Opus 5 | $0.00050 | $0.01511 |
| Sonnet 5 | $0.00020 | $0.00605 |
| Haiku 4.5 | $0.00010 | $0.00302 |
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 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.
How it starts
The opening of the file, as written. The whole thing — 295 lines — stays where its author put it; the contents beside it link to each section on GitHub.
uv: Python Package & Project Manager
uv replaces pip, pip-tools, pipx, pyenv, virtualenv, and poetry. Written in Rust, 10-100x faster than alternatives. It is stable production software; minor versions can contain breaking changes, while patch releases are intended to be non-breaking.
Snapshot: v0.11.11, May 2026. The installed binary outranks this file. Run uv --version first, and uv <command> --help whenever a flag here doesn't land. The local install is often behind, and commands documented below (notably uv audit, preview-gated since 0.10) may simply not exist yet.
Workflow Decision Tree
What are you doing?
├─ Running a standalone script? ──────────────────── Scripts workflow
│ (single .py file, no project context needed)
├─ Working in a project with pyproject.toml? ─────── Projects workflow
│ (adding deps, running commands, building)
├─ Running a CLI tool (ruff, ty, pytest)? ────────── Tools workflow
│ (one-off execution, not project-scoped)
├─ Managing Python versions? ─────────────────────── Python workflow
│ (installing, pinning, upgrading interpreters)
├─ Legacy requirements.txt workflow? ─────────────── Pip interface
│ (no pyproject.toml, existing req files)
└─ Building/publishing a package? ────────────────── Build/Publish workflow
(sdist, wheel, PyPI upload)
Critical rule: If pyproject.toml exists, use project commands (uv add, uv sync, uv run). Never uv pip install in a project, it bypasses the lockfile.
Projects
Initialization
uv init # App (main.py, no build system)
uv init --lib # Library (src/ layout, uv_build backend, py.typed)
uv init --package # Packaged app (src/ layout, entry points)
uv init --build-backend uv_build # Explicit backend choice
uv init --build-backend maturin # Rust extension module
uv init --python 3.13 # Specific Python version
uv init --bare # pyproject.toml only
What ships with it
3 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 · 295 lines · 100 tokens per session scan A 17a48140cf17
uv is a skill published in the GitHub repository hyperb1iss/hyperskills (31 stars, last pushed 8d ago), licensed MIT. It adds 100 tokens to every session and 3,023 once invoked, about $0.0005 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 2026-08-30.
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