uv

A project rule making uv the main tool for managing and running the project. uv is a command-line tool for Python environments and packages.

In plain words
What is it for?
Running scripts, tests, and other command-line tasks through uv.
Why use it?
It keeps script launches and tests using one agreed project tool.

Cursor rule for Cursor

Install

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.

agentmods
npx agentmods add rules/piplin-es/mcp-python/uv
Clone the repo
git clone --depth 1 https://github.com/piplin-es/mcp-python

Made for: Cursor.

Per session 37 This file is loaded in full into every session.
When invoked 37 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00037 $0.00037
Opus 5 $0.00018 $0.00018
Sonnet 5 $0.00007 $0.00007
Haiku 4.5 $0.00004 $0.00004

Measured yesterday against content hash 8be556ac5c62, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 yesterday.

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.

.cursor/rules/uv.mdc · 6 lines

What it actually says

uv is our main project management tool, use it for all command line tasks: launching scripts, test, etc.

Changes

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.

  1. yesterday First seen · 6 lines · 37 tokens per session scan A 8be556ac5c62

Subscribe to this mod's changes

uv is a cursor rule published in the GitHub repository piplin-es/mcp-python (1 stars, last pushed 1y ago), licensed MIT. It adds 37 tokens to every session, 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.