neo-python-manager

neo-python-manager is a skill for Claude Code, Codex from Benknightdark/neo-skills. It costs 64 tokens per session (847 once invoked), scanned C, original, MIT.

A guide for managing Python packages and virtual environments. It helps identify whether a project uses uv, Poetry, or pip from its configuration files.

In plain words
What is it for?
Use it to add, remove, update, or install packages; create or sync environments; run Python scripts; and diagnose package setup.
Why use it?
It removes guesswork about which commands to run when dependencies or the project environment need changing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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 skills/benknightdark/neo-skills/neo-python-manager
Any agent
npx skills add Benknightdark/neo-skills --skill neo-python-manager
Clone the repo
git clone --depth 1 https://github.com/Benknightdark/neo-skills

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for neo-python-manager

README.md
[![agentmods](https://agentmods.dev/badge/skills/benknightdark/neo-skills/neo-python-manager.svg)](https://agentmods.dev/skills/benknightdark/neo-skills/neo-python-manager)
Your own site
<a href="https://agentmods.dev/skills/benknightdark/neo-skills/neo-python-manager"><img src="https://agentmods.dev/badge/skills/benknightdark/neo-skills/neo-python-manager.svg" alt="Measured on agentmods" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 847 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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 5.1 $0.00064 $0.00847
Opus 5 $0.00032 $0.00424
Sonnet 5 $0.00013 $0.00169
Haiku 4.5 $0.00006 $0.00085

Measured 6d ago against content hash 3595636cda6c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade C, and why

neo-python-manager scanned grade C with 2 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 6d 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

- **Installation (Unix/macOS):** `curl -LsSf https://astral.sh/uv/install.sh | sh`

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- **Installation (Unix/macOS):** `curl -LsSf https://astral.sh/uv/install.sh | sh`
skills/neo-python-manager/SKILL.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Python Environment Manager Skill

Trigger On

  • The user asks "How do I install a package?" or "Which package manager is this project using?".
  • The user requests to add, remove, or update Python dependencies.
  • Need to initialize a virtual environment or execute a Python script but unsure whether to use uv run, poetry run, or python.
  • The project lacks explicit environment configuration and needs recommendations for suitable tools.

Workflow

  1. Perceive:
    • Scan the project root for characteristic files: uv.lock, poetry.lock, pyproject.toml, requirements.txt.
    • Check the system environment to test if tools are installed: execute uv --version or poetry --version.
  2. Reason:
    • Determine the tool the project should use based on characteristic files (Priority: uv > Poetry > pip).
    • Check tool availability: If the project is determined to use uv but it's not installed, or if the user wants to switch to uv/Poetry but the environment is not ready, mark it as "Pending Installation".
  3. Act:
    • Tool Installation Suggestion: If the tool is not installed, must ask the user first: "Detected that the project uses [Tool Name], but it is not installed in your environment. Would you like me to provide the installation command and assist with the installation?"
    • Output Commands: Provide the correct operation commands for the identified management tool.
    • Execute Changes: If the user agrees to installation or dependency changes, provide CLI commands for user confirmation.

Tooling Commands Reference

1. uv (Recommended: Ultra-fast Tool)

  • Detection Criteria: uv.lock exists.
  • Installation (Unix/macOS): curl -LsSf https://astral.sh/uv/install.sh | sh
  • Installation (Windows): powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"
  • Common Commands:
    • uv add <package> (Add package)
    • uv sync (Sync environment)
    • uv run <script.py> (Run script)

Read the full file on GitHub · 67 lines

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. 6d ago First seen · 67 lines · 64 tokens per session scan C 3595636cda6c

Subscribe to this mod's changes

neo-python-manager is a skill published in the GitHub repository Benknightdark/neo-skills (7 stars, last pushed today), licensed MIT. It adds 64 tokens to every session and 847 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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