What is cardano-init CLAUDE.md?

Project instructions for cardano-init, a Rust command-line tool that creates Cardano protocol projects from selected tools. It generates a monorepo, meaning several related projects managed in one repository.

Use it when building, testing, formatting, reviewing, or extending cardano-init and its generated Cardano project structure.

It tells coding agents which documents define the design, which commands are available, and which features are implemented versus merely planned.

How input-output-hk/cardano-init configures Claude Code

Reuse

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.

Copy the file

curl -O https://raw.githubusercontent.com/input-output-hk/cardano-init/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/input-output-hk/cardano-init

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

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Your own site

<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/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/input-output-hk/cardano-init/claude-md"><img src="https://agentmods.dev/badge/instructions/input-output-hk/cardano-init/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,327 This file is loaded in full into every session.

When invoked 1,327 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	$0.01327	$0.01327
Opus 5.5	$0.00531	$0.00531
Sonnet 5.5	$0.00265	$0.00265
Haiku 4.5	$0.00133	$0.00133

Measured 11d ago against content hash fe0ce1b78ae7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 11d 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 · 82 lines

How it starts

The opening of the file, as written. The whole thing — 82 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/design/prd.md (product), docs/contributing/architecture.md (system design), and docs/design/tech-spec.md (contracts, schemas, edge cases) before making any significant changes; docs/contributing/adding-a-tool.md is the contributor guide and docs/design/roadmap.md is the milestone plan.

docs/ is the source of the docs site (mdBook, published to GitHub Pages by .github/workflows/docs.yml), in three folders: user-guide/ (CLI users; follows the Cardano Developer Portal writing rules), contributing/, and design/. Every page must be listed in docs/SUMMARY.md. Preview with mdbook serve docs.

The dependency doctor, list, --json, and the pre-generation version-update notice are implemented. Minimum-version checks remain planned, not yet implemented. docs/design/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/contributing/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. The Role enum (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).

Read the full file on GitHub · 82 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.

11d ago Changed · -1 tokens per session fe0ce1b78ae7
25d ago Changed · -10 tokens per session f917e3850395
27d ago Changed · +2 lines · +86 tokens per session f5d766fab96a
2mo ago First seen · 80 lines · 1,252 tokens per session scan A 3f1802af770c

Subscribe to this mod's changes

cardano-init CLAUDE.md is an instructions file published in the GitHub repository input-output-hk/cardano-init (13 stars, last pushed yesterday), licensed Apache-2.0. It adds 1,327 tokens to every session, about $0.0053 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.

Languages Rust Web3 and blockchain blockchain cardano cardano-community dapp dapp-development smart-contracts

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cardano-init: Instructions file for Claude Code