python-packages

Instructions for installing and using Python packages in SkillBench containers. Python packages are reusable code libraries for tasks such as scientific computing, data analysis, and file handling.

In plain words
What is it for?
It is for working with scientific and data-analysis libraries and reading or writing file formats from Python.
Why use it?
It helps avoid installation problems and incorrect package use in the provided environment.

Skill for Claude CodeCodex

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/a-evo-lab/a-evolve/python-packages
Any agent
npx skills add A-EVO-Lab/a-evolve --skill python-packages
Clone the repo
git clone --depth 1 https://github.com/A-EVO-Lab/a-evolve

Made for: Claude Code, Codex.

Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 565 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown 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 $0.00027 $0.00565
Opus 5 $0.00014 $0.00282
Sonnet 5 $0.00005 $0.00113
Haiku 4.5 $0.00003 $0.00056

Measured yesterday against content hash 6e06baa42651, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

python-packages scanned grade B with 1 finding 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

Containers run as root. Always use `--break-system-packages`:
seed_workspaces/skillbench/skills/python-packages/SKILL.md · 68 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 68 lines · 27 tokens per session scan B 6e06baa42651

Subscribe to this mod's changes

python-packages is a skill published in the GitHub repository A-EVO-Lab/a-evolve (765 stars, last pushed 10d ago), with no licence file. It adds 27 tokens to every session and 565 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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