Borrowing it
Nothing to install: this file belongs to zircote/python-lsp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/zircote/python-lsp/main/CLAUDE.mdgit clone --depth 1 https://github.com/zircote/python-lspWrote 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.
[](https://agentmods.dev/instructions/zircote/python-lsp/claude-md)<a href="https://agentmods.dev/instructions/zircote/python-lsp/claude-md"><img src="https://agentmods.dev/badge/instructions/zircote/python-lsp/claude-md/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.
<a href="https://agentmods.dev/instructions/zircote/python-lsp/claude-md"><img src="https://agentmods.dev/badge/instructions/zircote/python-lsp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00454 | $0.00454 |
| Opus 5.5 | $0.00182 | $0.00182 |
| Sonnet 5.5 | $0.00091 | $0.00091 |
| Haiku 4.5 | $0.00045 | $0.00045 |
Grade A, and why
python-lsp CLAUDE.md 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- latex-lsp CLAUDE.md — 86% identical, 31 lines differ
What it actually says
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
A Claude Code plugin providing Python development support through Pyright LSP integration and 15 automated hooks for type checking, linting, formatting, testing, and security scanning.
Setup
Run /setup to install all required tools, or manually:
npm install -g pyright
pip install ruff black isort mypy bandit pytest pip-audit
Key Files
| File | Purpose |
|---|---|
.lsp.json |
Pyright LSP configuration |
hooks/hooks.json |
Automated development hooks |
hooks/scripts/python-hooks.sh |
Hook dispatcher script |
commands/setup.md |
/setup command definition |
.claude-plugin/plugin.json |
Plugin metadata |
Hook System
All hooks trigger afterWrite. Hooks use command -v checks to skip gracefully when optional tools aren't installed.
Hook categories:
- Formatting (
**/*.py): black/ruff format, isort - Linting (
**/*.py): ruff/flake8, type checking - Security (
**/*.py): bandit, pip-audit - Dependencies (
**/requirements.txt,**/pyproject.toml): audit, validation
When Modifying Hooks
Edit hooks/scripts/python-hooks.sh. The script handles different file types and runs appropriate tools:
- Use
|| trueto prevent hook failures from blocking writes - Use
head -Nto limit output verbosity - Use
command -v tool >/dev/null &&for optional tool dependencies
When Modifying LSP Config
Edit .lsp.json. The extensionToLanguage map controls which files use the LSP. Current config maps .py and .pyi files to the python language server.
Conventions
- Prefer minimal diffs
- Keep hooks fast (use
--quiet, limit output withhead) - Documentation changes: update both README.md and commands/setup.md if relevant
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.
- 1mo ago First seen · 55 lines · 454 tokens per session scan A a58a2ddc3bd7
python-lsp CLAUDE.md is an instructions file published in the GitHub repository zircote/python-lsp (3 stars, last pushed 2mo ago), licensed MIT. It adds 454 tokens to every session, about $0.0018 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 2026-08-31.
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Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
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AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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