agentmods.dev

python

python is a skill for Claude Code from xobotyi/cc-foundry. It costs 38 tokens per session (5,860 once invoked), scanned B, original, MIT.

A set of rules for writing, reviewing, refactoring, debugging, and understanding Python code, including modern syntax, typing, packaging, modules, and concurrency.

In plain words
What is it for?
Use it when working on Python projects, from changing code and imports to managing packages or asynchronous tasks.
Why use it?
It gives coding agents consistent Python guidance instead of making style and toolchain decisions from scratch.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_SKILL_DIR} variable. Also seen: mentions subagents.

Part of the python plugin — 2 skills shipped together

not rated 22repo 7d ago B scan 38 tokens original MIT

Good fit Use it when working on Python projects, from changing code and imports to managing packages or asynchronous tasks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/xobotyi/cc-foundry/python
View source ↗ xobotyi/cc-foundry
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.

Any agent
npx skills add xobotyi/cc-foundry --skill python
Clone the repo
git clone --depth 1 https://github.com/xobotyi/cc-foundry

Made for: Claude Code.

Or install python, the plugin that ships this one along with the rest of its 2 skills.

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 python

README.md
[![agentmods](https://agentmods.dev/badge/skills/xobotyi/cc-foundry/python/github.svg)](https://agentmods.dev/skills/xobotyi/cc-foundry/python)
Your own site
<a href="https://agentmods.dev/skills/xobotyi/cc-foundry/python"><img src="https://agentmods.dev/badge/skills/xobotyi/cc-foundry/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.

agentmods 80×15 button for python

Your own site · 80×15
<a href="https://agentmods.dev/skills/xobotyi/cc-foundry/python"><img src="https://agentmods.dev/badge/skills/xobotyi/cc-foundry/python.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,860 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00038 $0.05860
Opus 5.5 $0.00015 $0.02344
Sonnet 5.5 $0.00008 $0.01172
Haiku 4.5 $0.00004 $0.00586

Measured 1mo ago against content hash 401627faaf8e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

python 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 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.

Strips warnings and disclaimersmediumAnti-refusal

Omitting safety caveats hides risk from the user and is a common jailbreak preamble.

When **reviewing** Python code: cite the specific violation and show the fix inline. Don't lecture — state what's wrong
plugins/python/skills/python/SKILL.md · 471 lines

How it starts

The opening of the file, as written. The whole thing — 471 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Python

Readability counts. Explicit is better than implicit. If your code needs a comment to explain its control flow, restructure it.

Python 3.14+ is the baseline. Use modern syntax unconditionally — no backward compatibility with older Python versions unless the project explicitly requires it.

References

  • [${CLAUDE_SKILL_DIR}/references/typing.md] — Type annotation patterns, generics, overloads, TypeVar, variance: full annotation examples, generic class patterns, Protocol implementation, TypeVar usage
  • [${CLAUDE_SKILL_DIR}/references/packaging.md] — Project layout, pyproject.toml, uv, dependency management: pyproject.toml templates, uv workflows, src layout, dependency groups, build backends
  • [${CLAUDE_SKILL_DIR}/references/modules.md] — Module system, imports, namespace packages, __init__.py: import resolution order, circular import fixes, lazy imports, namespace packages
  • [${CLAUDE_SKILL_DIR}/references/concurrency.md] — asyncio, TaskGroup, cancellation, timeouts, threading interop: TaskGroup error handling, timeout scopes, cancellation semantics, to_thread, eager task factory

Naming

  • Variables, functions, methods — snake_case: user_name, fetch_data

  • Classes, type aliases — PascalCase: UserService, HttpClient

  • Constants — UPPER_SNAKE_CASE: MAX_RETRIES, API_BASE_URL

  • Modules, packages — snake_case, short: user_store, auth

  • Private attributes/methods — _ prefix: _internal_cache, _validate()

  • Name-mangled attributes — __ prefix: __secret (rarely needed)

  • Type variables — PascalCase, short: T, KT, VT, ResponseT

  • Protocols — PascalCase, -able/-ible suffix: Renderable, Serializable

  • Descriptive names. user_count not n. Short names (i, x) only in tiny scopes (comprehensions, simple lambdas).

  • No redundant context. car.make not car.car_make.

  • Boolean names: is_/has_/can_/should_ prefix: is_valid, has_access.

  • Dunder methods are reserved for the data model. Never invent custom dunder names.

  • Avoid single-character names outside loop indices, comprehension variables, and well-established conventions (f for file, e for exception, k/v for key/value).

Read the full file on GitHub · 471 lines

Files

What ships with it

5 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.

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. 1mo ago First seen · 471 lines · 38 tokens per session scan B 401627faaf8e

Subscribe to this mod's changes

python is a skill published in the GitHub repository xobotyi/cc-foundry (22 stars, last pushed 7d ago), licensed MIT. It adds 38 tokens to every session and 5,860 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it B with 1 finding (strips warnings and disclaimers). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.

LanguagesPython
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