Borrowing it
Nothing to install: this file belongs to input-output-hk/cardano-init. 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/input-output-hk/cardano-init/main/CLAUDE.mdgit clone --depth 1 https://github.com/input-output-hk/cardano-initWrote 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/input-output-hk/cardano-init/claude-md)<a href="https://agentmods.dev/instructions/input-output-hk/cardano-init/claude-md"><img src="https://agentmods.dev/badge/instructions/input-output-hk/cardano-init/claude-md.svg" alt="Measured on agentmods" 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 | $0.01252 | $0.01252 |
| Opus 5 | $0.00626 | $0.00626 |
| Sonnet 5 | $0.00250 | $0.00250 |
| Haiku 4.5 | $0.00125 | $0.00125 |
Grade A, and why
cardano-init 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Project Overview
cardano-init is a Rust CLI tool that scaffolds Cardano protocol projects. Users select tools for each functional role (on-chain, off-chain, infrastructure, devnet, formal-methods) and the CLI generates a working monorepo. The authoritative docs live in docs/: read docs/PRD.md (product), docs/ARCHITECTURE.md (system design), and docs/TECH_SPEC.md (contracts, schemas, edge cases) before making any significant changes; docs/ADDING_A_TOOL.md is the contributor guide and docs/ROADMAP.md is the milestone plan.
It's an early prototype: the dependency doctor, list, and --format json are implemented, while a few capabilities (a version-update check, min-version checks) remain planned, not yet implemented. docs/ROADMAP.md tracks what's real vs. upcoming.
Commands
# Build
cargo build
# Run
cargo run -- [args]
# Tests
cargo test
# Single test
cargo test <test_name>
# Lint/format
cargo fmt
cargo clippy
Architecture
The codebase is a single Rust crate. The module structure is as follows (see docs/ARCHITECTURE.md §2):
src/cli/: impure edge: argument parsing (clap), interactive prompts (dialoguer), and the output presenter. Orchestrates the core; holds no generation logic.src/registry/: deserializes embedded TOML tool definitions into typed structs. TheRoleenum (5 roles) is the sole source of truth for the role vocabulary; the registry only references roles.src/scaffold/: four-phase pipeline: context building → planning → rendering → writing.src/doctor/: dependency detection + install advice.src/contract.rs: constants for the interface contract (canonical paths, env var names, role dirs).
Key invariant: registry/, scaffold/, contract, and the pure part of doctor/ have zero dependency on cli/ (the impure edge). They are pure logic over data.
Data model
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.
- 7d ago First seen · 80 lines · 1,252 tokens per session scan A 3f1802af770c
cardano-init CLAUDE.md is an instructions file published in the GitHub repository input-output-hk/cardano-init (11 stars, last pushed 5d ago), licensed Apache-2.0. It adds 1,252 tokens to every session, about $0.0063 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 2026-08-30.
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