Borrowing it
Nothing to install: this file belongs to testdouble/han. 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/testdouble/han/main/CLAUDE.mdgit clone --depth 1 https://github.com/testdouble/hanWrote 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/testdouble/han/claude-md)<a href="https://agentmods.dev/instructions/testdouble/han/claude-md"><img src="https://agentmods.dev/badge/instructions/testdouble/han/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/testdouble/han/claude-md"><img src="https://agentmods.dev/badge/instructions/testdouble/han/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 | $0.07884 | $0.07884 |
| Opus 5.5 | $0.03154 | $0.03154 |
| Sonnet 5.5 | $0.01577 | $0.01577 |
| Haiku 4.5 | $0.00788 | $0.00788 |
Grade A, and why
han 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.
How it starts
The opening of the file, as written. The whole thing — 359 lines — stays where its author put it; the contents beside it link to each section on GitHub.
han: Project Map
Han is a Claude Code plugin suite for solo (or small-team) product engineers. It packages evidence-based planning, deep
code review, investigation, and documentation workflows into deterministic slash commands that dispatch specialist
sub-agents to do the judgment-heavy work. The suite ships as a family of plugins: han-communication (the foundational
plugin beneath every other: it owns the canonical readability standard, the writing-voice profile, and the explanation
standard for talking to a reader who will not implement the work, plus the inline readability-guidance skill that
surfaces the first two, the inline explanation-guidance skill that surfaces the third, the edit-for-readability skill,
the readability-editor agent, and the han-readability and han-concise output styles that apply the first two to
every turn of a session; it depends on nothing and every prose-producing plugin depends on it), han-core (the shared foundation: the
specialist agent roster the rest of the suite dispatches — every shared agent except the readability-editor, the
research-analyst, and the discussion-facilitator — plus the project-discovery skill, the pairing collaborative working mode, and the canonical rule files; depends on no other Han plugin),
han-documentation (the documentation skills: project-documentation, architectural-decision-record, and runbook;
depends on han-communication and han-core and is bundled by the han meta-plugin), han-research (the
pre-planning knowledge-work skills — research, gap-analysis, and issue-triage — plus the research-analyst
agent; depends on han-communication and han-core and is bundled by the han meta-plugin), han-planning (the
planning skills you reach for before
implementation: specifying with plan-a-feature, planning a restructure of existing code with plan-a-change,
planning the build with plan-implementation, sequencing it with plan-a-phased-build, breaking it into work with plan-work-items, and stress-testing plans with
iterative-plan-review, plus the discussion-facilitator agent that audits a planning discussion in progress;
depends on han-communication and han-core and is bundled by the han meta-plugin),
han-coding (the coding skills
you reach for while working in code: writing it with tdd and refactor, designing an interface contract with
design-an-api, plus reviewing, overviewing, analyzing,
testing, investigating, and standardizing it with code-review, code-overview, code-walkthrough,
architectural-analysis,
automated-test-planning, manual-test-planning, investigate, and coding-standard; depends on han-communication and han-core and is bundled by
the han meta-plugin),
han-github (GitHub-facing skills), han-reporting (reporting and summary skills; depends only on
han-communication), han (a meta-plugin that installs han-communication, han-core, han-documentation,
han-research, han-planning, han-coding, han-github, and han-reporting via dependencies),
han-feedback (an opt-in plugin carrying the post-session feedback skill, which depends on no other Han plugin and is
deliberately not bundled by the han meta-plugin, so it is installed separately), han-atlassian (an opt-in plugin
carrying the Atlassian skills — Confluence publishing and work-items-to-Jira — which depends on han-communication,
han-core, han-documentation, han-planning, and han-coding because its wrapper skills run skills from each,
requires a
configured Atlassian MCP server, and is likewise not bundled by the han meta-plugin), han-linear (an opt-in
plugin carrying the work-items-to-Linear skill, which depends on no other Han plugin, requires a configured Linear MCP
server, and is likewise not bundled by the han meta-plugin), han-ddd (an opt-in plugin carrying the
ddd-analysis skill plus the bounded-context-critic, bounded-context-modeler,
business-capability-analyst, domain-language-analyst, domain-ownership-analyst, and domain-visualizer
agents — strategic Domain-Driven Design analysis for discovering bounded context
candidates, business capabilities, domain language signals, and domain ownership patterns, constructing and
evaluating semantic bounded context models, producing a domain and context map, and rendering it as diagrams; depends on
han-communication and han-core; NOT bundled by the han meta-plugin), and han-plugin-builder (an opt-in plugin carrying
the guidance for building skills
and plugins, plus the interview-driven skill-builder and agent-builder skills that author a new skill or agent from
scratch and review it against that guidance; it depends on nothing and is also deliberately not bundled by the han
meta-plugin).
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 · +28 lines · +754 tokens per session 5342acd22c13
- 1mo ago First seen · 331 lines · 7,130 tokens per session scan A 3281b4deffac
han CLAUDE.md is an instructions file published in the GitHub repository testdouble/han (304 stars, last pushed today), licensed MIT. It adds 7,884 tokens to every session, about $0.0315 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.
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.
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).