What is tutti CLAUDE.md?

A set of project conventions for Tutti, a Rust command-line tool that coordinates multiple coding agents using tmux sessions, Git worktrees, templates, and automated workflows.

It helps developers work on Tutti’s command handlers, agent sessions, Git worktrees, stored state, templates, permissions, and workflow execution.

It tells agents how the code is organized, how names are chosen, and how testing and configuration should fit the project.

How nutthouse/tutti configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to nutthouse/tutti. 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/nutthouse/tutti/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/nutthouse/tutti

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/nutthouse/tutti/claude-md/github.svg)](https://agentmods.dev/instructions/nutthouse/tutti/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/nutthouse/tutti/claude-md"><img src="https://agentmods.dev/badge/instructions/nutthouse/tutti/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/nutthouse/tutti/claude-md"><img src="https://agentmods.dev/badge/instructions/nutthouse/tutti/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 824 This file is loaded in full into every session.

When invoked 824 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.

Model	Per session	Once invoked
Fable 5.1	$0.00824	$0.00824
Opus 5.5	$0.00330	$0.00330
Sonnet 5.5	$0.00165	$0.00165
Haiku 4.5	$0.00082	$0.00082

Measured 2mo ago against content hash 5048ccd4f927, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tutti 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 · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tutti — Project Conventions

Language & Tooling

Rust (stable), single crate, binary name tt
No async in Phase 1 — all tmux interaction is synchronous std::process::Command
Dependencies: clap (derive), serde + toml, thiserror, comfy-table, colored, chrono, which

Architecture

src/cli/ — Clap command handlers, one file per subcommand
src/config/ — TOML config types and parsing (includes role mapping + [roles] table)
src/runtime/ — RuntimeAdapter trait + per-runtime implementations
src/session/ — tmux session management wrappers
src/worktree/ — Git worktree lifecycle
src/state/ — .tutti/ directory and agent state persistence
src/template/ — Template pack parsing, generation, repo detection, and built-in templates
src/automation/ — Workflow execution engine, artifact pipeline, artifact-polling mode
src/permissions/ — Claude Code settings generation and shell policy shims
src/error.rs — Central error types via thiserror

Naming

Musical terminology: voices (running agents), arrangements (configs), movements (phases), phrases (prompts)
tmux sessions: tutti-{team}-{agent}
Git branches for worktrees: tutti/{agent}
State files: .tutti/state/{agent}.json

Testing

Unit tests in each module (#[cfg(test)] mod tests)
Integration tests that need tmux should check for its presence first
Use tempfile or std::env::temp_dir() for filesystem tests

Error Handling

All public functions return Result<T, TuttiError>
Use thiserror for error variants, not anyhow
User-facing errors should include actionable guidance

Style

cargo fmt and cargo clippy must pass (CI enforced)
Prefer explicit imports over glob imports
Keep functions focused — if it's doing two things, split it

Code Review (CodeRabbit)

CodeRabbit is configured as a required reviewer on PRs
When it finds issues, it submits a "Request changes" review to block merging
Once all CodeRabbit comments are resolved and pre-merge checks pass, it automatically switches to "Approve"
Do not manually dismiss CodeRabbit reviews — fix the issues and let it re-review
PRs are only mergeable when CodeRabbit approves AND all CI checks are green

Read the full file on GitHub · 65 lines

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.

2mo ago First seen · 65 lines · 824 tokens per session scan A 5048ccd4f927

Subscribe to this mod's changes

tutti CLAUDE.md is an instructions file published in the GitHub repository nutthouse/tutti (130 stars, last pushed 3mo ago), licensed MIT. It adds 824 tokens to every session, about $0.0033 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.

vscode buildNext.instructions.md

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).

microsoft/vscode · 9,715 tokens

tutti: Instructions file for Claude Code