cargo-coupling CLAUDE.md

cargo-coupling CLAUDE.md is an instructions file for coding agents from nwiizo/cargo-coupling. It costs 1,507 tokens per session, scanned A, original, MIT.

Project instructions for cargo-coupling, a Rust command-line tool for measuring coupling and checking changes against Git references.

In plain words
What is it for?
Use them when developing cargo-coupling, running its analysis or web UI, configuring CI quality gates, or preparing releases.
Why use it?
They tell an agent how to build, test, format, lint, run, containerize, and release the project correctly.

Instructions file

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.

agentmods
npx agentmods add instructions/nwiizo/cargo-coupling/claude-md
Clone the repo
git clone --depth 1 https://github.com/nwiizo/cargo-coupling

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.

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README.md
[![agentmods](https://agentmods.dev/badge/instructions/nwiizo/cargo-coupling/claude-md.svg)](https://agentmods.dev/instructions/nwiizo/cargo-coupling/claude-md)
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<a href="https://agentmods.dev/instructions/nwiizo/cargo-coupling/claude-md"><img src="https://agentmods.dev/badge/instructions/nwiizo/cargo-coupling/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,507 This file is loaded in full into every session.
When invoked 1,507 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01507 $0.01507
Opus 5 $0.00754 $0.00754
Sonnet 5 $0.00301 $0.00301
Haiku 4.5 $0.00151 $0.00151

Measured 3d ago against content hash 5ce8c2ec1493, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cargo-coupling 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 3d 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 · 114 lines

How it starts

The opening of the file, as written. The whole thing — 114 lines — stays where its author put it; the contents beside it link to each section on GitHub.

cargo-coupling

Rust CLI for coupling analysis based on Khononov's "Balancing Coupling in Software Design".

Commands

# Development
cargo build --release && cargo test --all-features && cargo fmt --all && cargo clippy --all-targets --all-features -- -D warnings

# Run
cargo run -- coupling ./src          # Analyze
cargo run -- coupling --web ./src    # Web UI (:3000)
cargo run -- coupling --history ./src        # Coupling health over git history (time-series)
cargo run -- coupling --history=8 --json ./src  # Time-series as JSON (8 samples)
cargo run -- coupling --baseline main ./src  # Diff current issues against a git ref
cargo run -- coupling --check --baseline main ./src  # Ratchet gate: fail only on new High/Critical issues

# Docker
docker build -t cargo-coupling .
docker run --rm -v $(pwd):/workspace cargo-coupling coupling /workspace/src
docker compose up web

# Release
cargo fmt --all -- --check
cargo clippy --all-targets --all-features -- -D warnings
cargo test --all-features
cargo build --release
# bump Cargo.toml to X.Y.Z, refresh Cargo.lock, then:
git add Cargo.toml Cargo.lock
git commit -m "chore: release vX.Y.Z"
git tag -a vX.Y.Z -m "vX.Y.Z"
git push origin main
git push origin vX.Y.Z
# → GitHub Actions auto-publishes to crates.io

# Docker Release (manual)
gh auth refresh -h github.com -s write:packages
gh auth token | docker login ghcr.io -u nwiizo --password-stdin
docker build -t ghcr.io/nwiizo/cargo-coupling:vX.Y.Z -t ghcr.io/nwiizo/cargo-coupling:latest .
docker push ghcr.io/nwiizo/cargo-coupling:vX.Y.Z
docker push ghcr.io/nwiizo/cargo-coupling:latest

Key Files

Path Purpose
src/analyzer.rs AST analysis (syn)
src/discovery.rs Source file discovery (cargo targets + module tree, #[path])
src/classification.rs Coupling classification: target resolution, structural distance, strength
src/balance/ Balance score calculation and issue detection
src/metrics/ Data structures (ProjectMetrics, dimensions)
src/history.rs Time-series: re-analyzes past git revisions via worktrees (--history)
src/config.rs .coupling.toml loading and pattern compilation
src/workspace.rs cargo metadata / workspace resolution
src/web/ Web visualization server
Dockerfile distroless (58MB)
Dockerfile.full debian-slim + Git

Read the full file on GitHub · 114 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.

  1. 3d ago First seen · 114 lines · 1,507 tokens per session scan A 5ce8c2ec1493

Subscribe to this mod's changes

cargo-coupling CLAUDE.md is an instructions file published in the GitHub repository nwiizo/cargo-coupling (96 stars, last pushed 6d ago), licensed MIT. It adds 1,507 tokens to every session, about $0.0075 per session on Opus 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 2026-09-01.