tmuxcontrollib: Instructions file for Claude Code

CLAUDE.md

tmuxcontrollib CLAUDE.md is an instructions file for Claude Code from jbwinters/tmuxcontrollib. It costs 382 tokens per session, scanned A, original, MIT.

Development instructions for TmuxControlLib, a Python library and command-line tool for controlling tmux, which manages terminal sessions and windows. They define setup, formatting, type checking, testing, running, and packaging commands.

In plain words
What is it for?
Installing the package, formatting Python code, checking type annotations, running all or one test, launching the CLI, and building a distribution package.
Why use it?
They keep development checks and code style consistent across contributors.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is jbwinters/tmuxcontrollib's own configuration. It tells Claude Code how to work on tmuxcontrollib itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything tmuxcontrollib configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jbwinters/tmuxcontrollib. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jbwinters/tmuxcontrollib/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/jbwinters/tmuxcontrollib

Made for: Claude Code.

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Per session 382 This file is loaded in full into every session.
When invoked 382 The same file — it is already loaded in full.
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 $0.00382 $0.00382
Opus 5.5 $0.00153 $0.00153
Sonnet 5.5 $0.00076 $0.00076
Haiku 4.5 $0.00038 $0.00038

Measured 2mo ago against content hash e232ec31d9fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tmuxcontrollib 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 2mo 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.md · 49 lines

What it actually says

TmuxControlLib Development Guide

Build & Run Commands

# Install dependencies and package in development mode
poetry install

# Format code
poetry run black tmuxcontrollib/
poetry run isort tmuxcontrollib/

# Type checking
poetry run mypy tmuxcontrollib/

# Run all tests
poetry run pytest tests/

# Run a single test
poetry run pytest tests/test_file.py::test_function_name -v

# Run the CLI
poetry run tmuxcontrollib

# Build package
poetry build

Code Style Guidelines

  • Imports: Use isort with Black profile. Group stdlib, third-party, local imports.
  • Formatting: Follow Black with 88 char line length. Docstrings use """triple quotes""".
  • Types: Use type annotations throughout. Enable mypy strict mode in new modules.
  • Naming:
    • Classes: PascalCase
    • Functions/variables: snake_case
    • Constants: UPPER_SNAKE_CASE
  • Error handling: Use specific exceptions with descriptive messages.
  • Self-documenting: Make code descriptive with clear function/variable names.
  • Documentation: Include docstrings for all public modules, classes, and functions.
  • Keep running documentation of larger architecture concerns in the docs directory.

Project Structure

  • tmuxcontrollib/: Main package directory
    • tmux_control/: The tmux control module
    • cli.py: CLI implementation
    • tui.py: Text UI implementation
    • main.py: Entry point for the application
  • tests/: Test directory mirroring the package structure
  • Use poetry for dependency management and package publishing.
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. 2mo ago First seen · 49 lines · 382 tokens per session scan A e232ec31d9fa

Subscribe to this mod's changes

tmuxcontrollib CLAUDE.md is an instructions file published in the GitHub repository jbwinters/tmuxcontrollib (2 stars, last pushed 1y ago), licensed MIT. It adds 382 tokens to every session, about $0.0015 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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