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 L3DigitalNet/Claude-Code-Plugins --skill uv-strict-pythongit clone --depth 1 https://github.com/L3DigitalNet/Claude-Code-PluginsWrote 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/l3digitalnet/claude-code-plugins/uv-strict-python)<a href="https://agentmods.dev/skills/l3digitalnet/claude-code-plugins/uv-strict-python"><img src="https://agentmods.dev/badge/skills/l3digitalnet/claude-code-plugins/uv-strict-python/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/l3digitalnet/claude-code-plugins/uv-strict-python"><img src="https://agentmods.dev/badge/skills/l3digitalnet/claude-code-plugins/uv-strict-python.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00075 | $0.04406 |
| Opus 5.5 | $0.00030 | $0.01762 |
| Sonnet 5.5 | $0.00015 | $0.00881 |
| Haiku 4.5 | $0.00007 | $0.00441 |
Grade A, and why
uv-strict-python 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 1mo 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 — 347 lines — stays where its author put it; the contents beside it link to each section on GitHub.
uv-strict-python
Operational guide for the Python Tooling SSOT Standard: one small, strict, boring toolchain that behaves identically in CLI, VS Code, and CI. The standard prefers a few non-overlapping authorities over many competing tools, because contradictory feedback is expensive for coding agents.
This skill operationalizes the Python Tooling standard — toolchain, layout, and the verification gate. Code shape and agent-behavior rules (error handling, side-effect boundaries, trust boundaries, prohibited behaviors) live in the companion Python Coding standard, summarized in coding-standard.md. A green gate on badly shaped code is not done — read both.
Sync pin: mirrors Project Standards v5.25.0 (peeled commit
b2f73d9dee080a7579a7900168093dabf4c52b5b) and Python Tooling 1.16 (sha256:60d3a68c9973942b7a92f7affcd3fbac553b3c79c31bcd63b723e1186bd3c734). The immutable released payload is canonical. This skill retains exactly three byte-identical whole-file resources and delegates semantic units to Catalog 5 reconciliation.
When to Use This Skill
- Creating a new Python project or package
- Setting up or auditing
pyproject.toml - Configuring the toolchain (format, lint, type-check, test, coverage, audit)
- Writing Python scripts with external dependencies
- Migrating an existing project to the standard toolchain
When NOT to Use This Skill
- User wants to keep legacy tooling: respect existing workflows if explicitly requested; record the deviation as an ADR exception, not a silent drift.
- Documented project exception applies: a project may pin a lower
requires-python, add scanners, or keep mypy if an ADR records why. - Non-Python projects: mixed codebases where Python isn't primary.
Which gate to run
Decide before running anything — the two paths are not interchangeable:
- Repository adopts the standard (
.standards/config.tomlselectspython-tooling, the generatedAGENTS.md/CLAUDE.mdcarries the Python tooling block,scripts/check.pyexists): the repository-owned gate is the gate. Runuv run python scripts/check.py, or the generated block's own commands scoped to their declared roots. Never substitute a repository-wide.sweep in an adopting repo — it reaches paths the repository deliberately excluded. - Non-adopting project or standalone script with no repository gate: use the fallback gate below. It is complete as-is and is the normal path for scripts and projects that never adopted Catalog 5.
What ships with it
21 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.
- agents/openai.yaml 372 B
- references/coding-standard.md 10 KB
- references/dependabot.md 1.9 KB
- references/migration-checklist.md 3.1 KB
- references/pep723-scripts.md 6.4 KB
- references/pyproject.md 4.2 KB
- references/ruff-config.md 4.9 KB
- references/security-setup.md 3.2 KB
- references/testing.md 5.0 KB
- references/uv-commands.md 3.0 KB
- shims/pip 1.1 KB
- shims/pip3 3 B
- shims/pipx 1.3 KB
- shims/python 1.2 KB
- shims/python3 6 B
- shims/uv 1.2 KB
- templates/adr-python-tooling-exception.md 1.4 KB
- templates/check.py 2.7 KB runs code
- templates/check.yml 921 B
- templates/dependabot.yml 958 B
- templates/python-version 5 B
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.
- 1mo ago First seen · 347 lines · 75 tokens per session scan A 644583bd6aef
uv-strict-python is a skill published in the GitHub repository L3DigitalNet/Claude-Code-Plugins (8 stars, last pushed 1mo ago), licensed MIT. It adds 75 tokens to every session and 4,406 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-09-04.
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