Borrowing it
Nothing to install: this file belongs to cosmix/loom. 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/cosmix/loom/main/CLAUDE.mdgit clone --depth 1 https://github.com/cosmix/loomWrote 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/cosmix/loom/claude-md)<a href="https://agentmods.dev/instructions/cosmix/loom/claude-md"><img src="https://agentmods.dev/badge/instructions/cosmix/loom/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/cosmix/loom/claude-md"><img src="https://agentmods.dev/badge/instructions/cosmix/loom/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 | $0.00354 | $0.00354 |
| Opus 5.5 | $0.00142 | $0.00142 |
| Sonnet 5.5 | $0.00071 | $0.00071 |
| Haiku 4.5 | $0.00035 | $0.00035 |
Grade A, and why
loom 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.
What it actually says
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
⚠️ KNOWLEDGE-FIRST: doc/loom/knowledge/INDEX.md is the map of this project's curated knowledge. Read it before exploring the tree, then only the sections it points to; pull a specific question with loom knowledge context --query (the sections come back quoted). Inside a loom stage the signal's Knowledge Brief comes first.
Project Overview
Loom is a self-propelling agent orchestration CLI written in Rust. It coordinates Claude Code sessions across git worktrees, enabling parallel task execution with automatic crash recovery and context handoffs.
This is an unreleased project under active development NO BACKWARDS COMPATIBILTY OR MIGRATION ROUTINES SHOULD BE ADDED AT THIS STAGE.
Build Commands
cd loom
cargo build # Development build
cargo build --release # Release build
cargo test # Run all tests
cargo test stage_transitions # Run single test file
cargo test --test e2e # Run end-to-end tests
cargo clippy -- -D warnings # Lint with warnings as errors
cargo fmt --check # Check formatting
Tests use serial_test for isolation - many tests cannot run in parallel.
Plans
Look in doc/plans for the plan files!
Remember your Mandatory Rules
Claude.md rules are mandatory and supersede any Plan Mode or other Claude instructions!
Ignore the test-project, unless the user explicitly asks you to read or work with it to test a loom feature.
Remember: NEVER write plans to ~/.claude/plans. It is strictly forbidden.
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 Changed · -105 lines · -900 tokens per session 35011d898926
- 1mo ago Changed · +4 tokens per session 0a353126521d
- 1mo ago Changed · -3 lines · -73 tokens per session 3cf7148c2752
- 1mo ago First seen · 147 lines · 1,323 tokens per session scan A 1a2984cd9070
loom CLAUDE.md is an instructions file published in the GitHub repository cosmix/loom (64 stars, last pushed 2d ago), licensed MIT. It adds 354 tokens to every session, about $0.0014 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.
Other instructions, from other repositories
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).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.