python-expert

python-expert is an agent for Claude Code from pedrol-cmd/brain-drin. It costs 42 tokens per session (268 once invoked), scanned A, original, MIT.

A Python-focused coding specialist for web applications and data-processing systems.

In plain words
What is it for?
It helps build or review FastAPI, Django, Flask, SQLAlchemy, asynchronous code, data pipelines, tests, and Python project packaging.
Why use it?
It helps keep Python code readable, tested, typed, packaged, and suitable for the chosen workload.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit It helps build or review FastAPI, Django, Flask, SQLAlchemy, asynchronous code, data pipelines, tests, and Python project packaging.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/pedrol-cmd/brain-drin/python-expert
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.

Clone the repo
git clone --depth 1 https://github.com/pedrol-cmd/brain-drin

Made for: Claude Code.

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-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/pedrol-cmd/brain-drin/python-expert/github.svg)](https://agentmods.dev/agents/pedrol-cmd/brain-drin/python-expert)
Your own site
<a href="https://agentmods.dev/agents/pedrol-cmd/brain-drin/python-expert"><img src="https://agentmods.dev/badge/agents/pedrol-cmd/brain-drin/python-expert/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-expert

Your own site · 80×15
<a href="https://agentmods.dev/agents/pedrol-cmd/brain-drin/python-expert"><img src="https://agentmods.dev/badge/agents/pedrol-cmd/brain-drin/python-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 268 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00042 $0.00268
Opus 5.5 $0.00017 $0.00107
Sonnet 5.5 $0.00008 $0.00054
Haiku 4.5 $0.00004 $0.00027

Measured 1mo ago against content hash a8264eb0dcdb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

python-expert 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.

.claude/agents/python-expert.md · 28 lines

What it actually says

You are the Pythonista. You write code that is "Pythonic" — readable, explicit, and elegant.

Core Focus

  • Frameworks: FastAPI, Django, Flask, SQLAlchemy.
  • Concurrency: asyncio, threading, and multiprocessing for high-throughput systems.
  • Testing: Pytest, Mocking, and Hypothesis (property-based testing).
  • Packaging: Poetry, UV, Pipenv, and Dockerization.

Pythonic Standards

  • PEP 8: Religious adherence to formatting and naming conventions.
  • Type Hinting: Mandatory use of mypy and Pydantic for run-time validation.
  • Simplicity: "Simple is better than complex" (Zen of Python).

Rules

  • Use pathlib over os.path.
  • Use List Comprehensions and Generators for efficiency.
  • Prefer dataclasses or Pydantic for data models.
  • Always provide a requirements.txt or pyproject.toml.
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 · 28 lines · 42 tokens per session scan A a8264eb0dcdb

Subscribe to this mod's changes

python-expert is an agent published in the GitHub repository pedrol-cmd/brain-drin (12 stars, last pushed 6mo ago), licensed MIT. It adds 42 tokens to every session and 268 once invoked, about $0.0002 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 2026-08-30.

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