uv-package-manager
Master the uv package manager for fast Python dependency management, virtual environments, and modern Python project workflows. Use when setting up Python projects, managing dependencies, or optimizing Python development workflows with uv.
53
58%
Does it follow best practices?
Impact
—
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./plugins/python-development/skills/uv-package-manager/SKILL.mdQuality
Discovery
67%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description adequately covers both what the skill does and when to use it, with an explicit 'Use when' clause. However, it stays at a category level rather than listing concrete actions, and the trigger terms could be expanded to include more natural user phrases and common uv-specific terminology. The 'Master' imperative voice at the start is slightly unusual but not penalized under the rubric's person rules.
Suggestions
Replace high-level categories with specific concrete actions, e.g., 'Install and lock Python packages, create virtual environments, run scripts, manage pyproject.toml configurations using the uv package manager.'
Add more natural trigger terms and variations users might say, such as 'pip alternative', 'uv pip', 'uv run', 'uv sync', 'pyproject.toml', 'lockfile', '.venv'.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (uv package manager, Python) and mentions some actions ('dependency management, virtual environments, project workflows'), but these are more category-level than concrete actions. It doesn't list specific operations like 'install packages', 'create virtual environments', 'lock dependencies', 'publish packages'. | 2 / 3 |
Completeness | Clearly answers both 'what' (fast Python dependency management, virtual environments, modern Python project workflows with uv) and 'when' (explicit 'Use when setting up Python projects, managing dependencies, or optimizing Python development workflows with uv'). | 3 / 3 |
Trigger Term Quality | Includes relevant keywords like 'uv', 'Python', 'dependencies', 'virtual environments', and 'package manager', which users might naturally say. However, it misses common variations like 'pip replacement', 'pyproject.toml', 'uv pip', 'uv run', 'uv sync', '.venv', or 'lockfile'. | 2 / 3 |
Distinctiveness Conflict Risk | The mention of 'uv' specifically helps distinguish it, but phrases like 'managing dependencies' and 'Python project workflows' could overlap with general Python skills, pip-focused skills, or poetry/conda skills. It could be more explicit about being uv-specific versus other Python package managers. | 2 / 3 |
Total | 9 / 12 Passed |
Implementation
50%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The skill is highly actionable with concrete, executable commands throughout, but it is excessively verbose—explaining what uv is, listing features Claude already knows, and including exhaustive flag listings that bloat the token budget. The content would benefit from aggressive trimming of explanatory sections and better splitting of reference material into separate files.
Suggestions
Remove the 'Core Concepts' section entirely (What is uv, Key Features, UV vs Traditional Tools)—Claude already knows these things and they waste tokens.
Remove or drastically shorten the 'When to Use This Skill' and 'Installation' sections; focus the main file on project setup and dependency management patterns only.
Move detailed patterns (Python version management, pyproject.toml examples, migration guides) into the referenced advanced-patterns.md file to reduce the main file to under 80 lines.
Add validation/error recovery steps: e.g., what to do when `uv lock` fails due to dependency conflicts, or how to verify `uv sync` succeeded.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Extremely verbose. Sections like 'What is uv?', 'Key Features', and 'UV vs Traditional Tools' explain concepts Claude already knows. The 'When to Use This Skill' section is unnecessary padding. Many patterns are exhaustive listings of flags that could be condensed significantly. The skill is well over 200 lines when it could be under 80. | 1 / 3 |
Actionability | The skill provides fully executable, copy-paste ready commands throughout. Every pattern includes concrete bash commands or TOML configuration examples with specific package names and version constraints. | 3 / 3 |
Workflow Clarity | The Quick Start section provides a reasonable sequence (init → add → sync), but there are no validation checkpoints or error recovery steps. For example, there's no guidance on what to do when dependency resolution fails, or how to verify a lock file is correct before deploying. | 2 / 3 |
Progressive Disclosure | There is a reference to 'references/advanced-patterns.md' at the end, but the main file contains far too much inline content that should be in reference files (e.g., all the installation methods, the full pyproject.toml example, migration patterns). The bundle has no files, so the reference is unverifiable. | 2 / 3 |
Total | 8 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- wshobson/agents
- Commit
112197c
- Reviewed
Table of Contents
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