han-planning

han-planning is a plugin for Claude Code from testdouble/han. Its manifest loads nothing; the 5 skills, 1 agent it bundles cost 831 tokens per session together, scanned A, original, MIT.

A collection of planning tools for the Han suite, covering feature specifications, implementation plans, build phases, work breakdowns, and plan reviews. Han is a set of coding-agent add-ons for organizing software work.

In plain words
What is it for?
Use it to specify features, plan implementation, sequence delivery, split work into tasks, and review plans before coding.
Why use it?
It gathers related planning tasks into one extension instead of requiring separate tools for each stage of preparing development work.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

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.

Claude Code
/plugin marketplace add testdouble/han
agentmods
npx agentmods add plugins/testdouble/han/han-planning
Clone the repo
git clone --depth 1 https://github.com/testdouble/han

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 han-planning

README.md
[![agentmods](https://agentmods.dev/badge/plugins/testdouble/han/han-planning.svg)](https://agentmods.dev/plugins/testdouble/han/han-planning)
Your own site
<a href="https://agentmods.dev/plugins/testdouble/han/han-planning"><img src="https://agentmods.dev/badge/plugins/testdouble/han/han-planning.svg" alt="Measured on agentmods" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 5 skills, 1 agent cost 831 tokens a session between them.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

han-planning 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 2d 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.

han-planning/.claude-plugin/plugin.json · 7 lines

What it actually says

{
  "name": "han-planning",
  "description": "Planning-facing skills for the Han suite: specifying, planning, sequencing, breaking down, and stress-testing work before implementation. Home of plan-a-feature (build a feature specification from scratch through a relentless, evidence-based interview that walks the design tree), plan-implementation (turn a feature specification into an implementation plan through a facilitated team conversation), plan-a-phased-build (split a body of context into a sequence of independently demoable vertical-slice phases), plan-work-items (break a trusted implementation plan into independently-grabbable, atomic work items), and iterative-plan-review (stress-test an existing plan through multiple codebase-grounded review passes). Also home of the discussion-facilitator agent, which audits a planning discussion in progress without deciding anything. Depends on han-core; bundled by the han meta-plugin.",
  "version": "2.2.1",
  "dependencies": ["han-communication", "han-core"]
}
Contents

What it installs

The manifest is a name and a version. 5 skills, 1 agent travel with it, and installing the plugin installs all of them — 831 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 2d ago First seen · 7 lines scan A 49d3dbef84f7

Subscribe to this mod's changes

han-planning is a plugin published in the GitHub repository testdouble/han (256 stars, last pushed 4d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-03.