# uv-run

Teaches your AI assistant to execute Python scripts via uv and embed dependencies with PEP 723 without manual virtual environment activation.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 306 installs · ★ 59
- Author: laurigates
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/laurigates/claude-plugins/tree/HEAD/python-plugin/skills/uv-run/SKILL.md
- Updated: 2026-10-25
- HTML: https://affpapa.org/en/nevibecode/skills/uv-run

## What it does

This skill guides agents on executing Python scripts with Astral's `uv`. Manual virtual environment activation is unnecessary. The assistant learns to supply temporary dependencies with `--with` flags and write standalone scripts containing inline PEP 723 dependency metadata blocks.

It covers running ephemeral command-line tools via `uvx`, handling script arguments, and profiling code with `cProfile`, `scalene`, or `py-spy`. For long-term dependency management inside `pyproject.toml`, the author explicitly points users toward the sibling `uv-project-management` skill instead.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add laurigates/claude-plugins --skill uv-run -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/uv-run/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/uv-run/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add laurigates/claude-plugins --skill uv-run -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/uv-run/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add laurigates/claude-plugins --skill uv-run -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/uv-run/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install laurigates/claude-plugins uv-run
```

2. **Manually: put the files in place**
- File: `.github/skills/uv-run/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add laurigates/claude-plugins --skill uv-run -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/laurigates/claude-plugins --path python-plugin/skills/uv-run
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/uv-run/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add laurigates/claude-plugins --skill uv-run -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/laurigates/claude-plugins/tree/HEAD/python-plugin/skills/uv-run/SKILL.md

## When to use it
- run one-off Python scripts without activating a virtual environment
- attach temporary packages to an execution using `--with` flags
- embed inline dependency metadata into standalone scripts via PEP 723
- profile script memory and CPU consumption using `scalene` or `py-spy`

## Example prompts
- Run `fetch_data.py` with temporary dependencies for `requests` and `rich`
- Add PEP 723 inline script metadata for `httpx` with Python 3.12 requirement to `client.py`
- Profile CPU execution time on `worker.py` using `cProfile`

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 9e91fc380a177354.

BEGIN THIRD-PARTY FILE 9e91fc380a177354
````text
---
created: 2025-12-16
modified: 2026-05-09
reviewed: 2026-04-25
name: uv-run
description: Run Python scripts with uv (PEP 723 inline deps, --with for one-off deps). Use when running scripts without venv activation or needing one-off dependencies.
user-invocable: false
allowed-tools: Glob, Grep, Read, WebFetch, TodoWrite, WebSearch, Edit, Write, NotebookEdit, Bash
---

# UV Run

Run Python scripts with uv - no manual venv activation needed.

## When to Use This Skill

| Use this skill when... | Use a focused sibling instead when... |
|---|---|
| Running a one-off script with `uv run script.py` and no project context | Adding a long-lived dependency to a project — use uv-project-management |
| Embedding PEP 723 inline metadata or `--with` deps into a self-contained script | Installing a global CLI tool (`uv tool install` / `uvx`) — use uv-tool-management |
| Executing project commands inside the project venv without manual activation | Authoring the project's pyproject.toml or lockfile — use uv-project-management |

## Core Capabilities

- **Direct execution**: `uv run script.py` handles environment automatically
- **Temporary dependencies**: `uv run --with requests script.py` for one-off needs
- **Inline dependencies**: PEP 723 metadata blocks for self-contained scripts
- **Ephemeral tools**: `uvx tool` runs CLI tools without installation

## Essential Commands

### Running Scripts

```bash
# Run script (uv manages environment automatically)
uv run script.py

# Run with arguments
uv run script.py --input data.csv --output results.json

# Run a specific module
uv run -m http.server 8000

# Run with specific Python version
uv run --python 3.12 script.py
```

### Temporary Dependencies

Add dependencies for a single run without modifying project:

```bash
# Single dependency
uv run --with requests fetch_data.py

# Multiple dependencies
uv run --with requests --with rich api_client.py

# Version constraints
uv run --with 'requests>=2.31' --with 'rich>12,<14' script.py

# Combine with project dependencies
uv run --with pytest-benchmark pytest  # Add benchmark to existing pytest
```

### Inline Script Dependencies (PEP 723)

Create self-contained scripts with embedded dependencies:

```python
#!/usr/bin/env -S uv run --script
# /// script
# requires-python = ">=3.11"
# dependencies = [
#   "requests>=2.31",
#   "rich>=13.0",
# ]
# ///

import requests
from rich import print

response = requests.get("https://api.github.com")
print(response.json())
```

Run directly:
```bash
uv run script.py

# Or make executable:
chmod +x script.py
./script.py
```

### Managing Script Dependencies

```bash
# Initialize script with metadata
uv init --script example.py --python 3.12

# Add dependency to script
uv add --script example.py requests rich

# Lock script dependencies for reproducibility
uv lock --script example.py
```

### Ephemeral Tool Execution (uvx)

Run CLI tools without installation:

```bash
# Run tool once
uvx pycowsay "Hello from uv!"
uvx httpie https://api.github.com
uvx ruff check .

# With specific version
uvx ruff@0.1.0 check .

# uvx is shorthand for:
uv tool run pycowsay "Hello"
```

## Shebang Patterns
````
END THIRD-PARTY FILE 9e91fc380a177354

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