han-research

han-research is a plugin for Claude Code from testdouble/han. Its manifest loads nothing; the 3 skills, 1 agent it bundles cost 470 tokens per session together, scanned A, original, MIT.

A collection of research skills for the Han suite, a set of tools for understanding problems before planning implementation. It includes open-ended research, comparison of two documents, and structured issue triage.

In plain words
What is it for?
Use it to research a question, compare two documents for gaps, or turn a vague bug or issue report into a structured triage document.
Why use it?
It helps teams investigate a problem, identify missing or conflicting information, and reach a recommendation before committing to a plan.

Plugin for Claude Code

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-research
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-research

README.md
[![agentmods](https://agentmods.dev/badge/plugins/testdouble/han/han-research.svg)](https://agentmods.dev/plugins/testdouble/han/han-research)
Your own site
<a href="https://agentmods.dev/plugins/testdouble/han/han-research"><img src="https://agentmods.dev/badge/plugins/testdouble/han/han-research.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 3 skills, 1 agent cost 470 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-research 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 today.

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-research/.claude-plugin/plugin.json · 7 lines

What it actually says

{
  "name": "han-research",
  "description": "Pre-planning knowledge-work skills for the Han suite: understanding a problem before anyone commits to a plan. Home of research (research an open-ended question and end at an adversarially-validated recommendation), gap-analysis (compare two artifacts and report what is missing, incomplete, or conflicting), and issue-triage (turn a vague issue or bug report into a structured triage document), plus the research-analyst agent the research skill dispatches. Depends on han-communication and han-core; bundled by the han meta-plugin.",
  "version": "1.0.1",
  "dependencies": ["han-communication", "han-core"]
}
Contents

What it installs

The manifest is a name and a version. 3 skills, 1 agent travel with it, and installing the plugin installs all of them — 470 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. today First seen · 7 lines scan A e41f9c501b6d

Subscribe to this mod's changes

han-research is a plugin published in the GitHub repository testdouble/han (255 stars, last pushed 3d 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.

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