craft: Instructions file for Claude Code

CLAUDE.md

craft CLAUDE.md is an instructions file for Claude Code from drobins25/craft. It costs 753 tokens per session, scanned A, original, MIT.

Project instructions for Craft, an open-source development harness for Claude Code. They define safety rules, project conventions, and which implementation workflows are allowed.

In plain words
What is it for?
Contributing to Craft, choosing safe fix workflows, applying small quick fixes, and writing consistent commit messages.
Why use it?
They prevent the agent from modifying the harness through unsafe self-editing workflows and clarify how different findings should be handled.

Instructions file for Claude Code

Written for Claude Code: UserPromptSubmit hook event. Also seen: mentions .claude-plugin; mentions Claude Code.

This is drobins25/craft's own configuration. It tells Claude Code how to work on craft itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything craft configures →

Reuse

Borrowing it

Nothing to install: this file belongs to drobins25/craft. 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/drobins25/craft/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/drobins25/craft

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.

agentmods badge for craft CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/drobins25/craft/claude-md/github.svg)](https://agentmods.dev/instructions/drobins25/craft/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/drobins25/craft/claude-md"><img src="https://agentmods.dev/badge/instructions/drobins25/craft/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.

agentmods 80×15 button for craft CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/drobins25/craft/claude-md"><img src="https://agentmods.dev/badge/instructions/drobins25/craft/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 753 This file is loaded in full into every session.
When invoked 753 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00753 $0.00753
Opus 5.5 $0.00301 $0.00301
Sonnet 5.5 $0.00151 $0.00151
Haiku 4.5 $0.00075 $0.00075

Measured 5d ago against content hash 4ee43590f98c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

craft 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 5d 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 · 32 lines

How it starts

The opening of the file, as written. The whole thing — 32 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Craft

Open-source Claude Code plugin: a development harness.

  • README.md - what craft is and how to use it
  • DESIGN.md - architecture, file layout, internals
  • CONTRIBUTING.md - contribution workflow for craft itself

This file is the operating contract for Claude working in this repo. Routing and live state are injected on every prompt via the UserPromptSubmit hook (the v1|craft-orchestration-index block) - don't duplicate that here.

Conventions

  • Commit messages describe what changed for a public audience. Use conventional prefixes: feat: / fix: / chore: / refactor: / docs: / test:. Translate internal jargon to what the change DOES. Public craft terms (skills, agents, commands, hooks, cycles, stories, backlog, phases) are fine; internal mechanism names need explanation.
    • Bad: fix: chain break when content-spark invokes via Skill tool
    • Good: fix: prevent skill nesting from breaking control flow back to caller
  • Use regular dashes (-) only, never em dashes, in human-facing text (docs, commit messages, changelog, chat). Em dashes are an AI-text tell. Code and code comments are out of scope; never file or fix them.
  • Craft runs from the installed plugin copy, not this working tree. Stories here go through /craft:story-implement like any other project. A change to craft's own files takes effect at the next reinstall, so a story that changes the implement loop is exercised by the story after it, not by itself.
  • Bump .claude-plugin/plugin.json version once per feature or fix that changes a file craft runs (commands, skills, agents, hooks and the scripts they call) - one bump per logical change (a story, an adhoc fix), in that change's final commit. Users only receive new files when this version changes, so such a change bumps even with nothing worth a changelog entry. Changes to tests, CI or contributor tooling alone never bump. Never per chunk; intermediate chunk commits do not bump.
  • CHANGELOG.md entries are notable-only - features and user-visible fixes get a ## <version> - <YYYY-MM-DD> heading with verb-first, user-facing bullets ("Added...", "Fixed...", "Changed...", "Improved..."). Internal changes to files craft runs (refactors, prompt rewording) bump the version with no entry, and no entry is ever about the repo itself (changelog edits, doc restructures, contributor tooling). Same audience rule as commit messages. check-doc-drift.sh blocks a changelog that's ahead of plugin.json, and blocks pushing a feat: commit with no changelog change.
    • Write every bullet for a craft user, not for us. The test: no internal mechanism names (CDN hosts, metadata fields, gate names, file paths), lead with what the user gets, and say what it feels like to use ("icons now arrive in seconds instead of minutes"), not how it works. The ## 1.99.54 entry is the exemplar - match its register.

Read the full file on GitHub · 32 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. 5d ago Changed · +87 tokens per session 4ee43590f98c
  2. 19d ago Changed · -4 lines · -81 tokens per session 91f57d8c9a0a
  3. 1mo ago Changed · +13 tokens per session dc7494da4cc7
  4. 1mo ago First seen · 36 lines · 734 tokens per session scan A dc02eb798c06

Subscribe to this mod's changes

craft CLAUDE.md is an instructions file published in the GitHub repository drobins25/craft (70 stars, last pushed today), licensed MIT. It adds 753 tokens to every session, about $0.0030 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.

Related

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).

microsoft/vscode · 9,715 tokens

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.

vercel/next.js · 7,581 tokens

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).

microsoft/vscode · 5,262 tokens

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.

langchain-ai/langchain · 4,680 tokens

deepseek-harness AGENTS.md

AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.

deepseek-ai/deepseek-harness · 4,261 tokens

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).

microsoft/vscode · 2,731 tokens