Han plugin for Codex

Name: Han
Author: testdouble

CommunityPluginDeveloper Tools

Han: AI skills and agents for "Solo" product engineers and small teams

How to install Han in Codex

✓ Install-checked in Codexchecked Oct 29, 2026 · 45 skills proof

1. Add the repo as a Codex plugin marketplace:

codex plugin marketplace add testdouble/han

2. Install the plugin from it:

codex plugin add <plugin>@han

This repo ships a Codex marketplace file (.agents/plugins/marketplace.json). The first command adds it as a marketplace (Codex CLI reference); the second installs a plugin from it: replace <plugin> with one of the names listed under 'What it contains'. 'han' is the marketplace name from that file. Check the repo README too. Command format: Codex CLI reference.

What it contains

Plugins in this marketplace (13)

han-communication — Foundational communication plugin for the Han suite: the shared readability standard, writing-voice profile, explanation standard, and the skills and agent that apply them.
han-core — The shared foundation of the Han suite: the specialist agent roster, project discovery, and the canonical rule files.
han-documentation — Documentation skills for writing down what the team built and decided: project docs, ADRs, and runbooks.
han-research — Pre-planning knowledge-work skills: open-ended research, gap analysis, and issue triage.
han-planning — Planning-facing skills for specifying, sequencing, and stress-testing work before implementation.
han-coding — Coding-facing skills for writing, reviewing, testing, investigating, and refactoring code.
han-github — GitHub-facing Han skills for PR descriptions, code review comments, and publishing issues.
han-reporting — Reporting and summary skills for stakeholder-facing summaries and HTML reports.
han-feedback — Post-session feedback skill for capturing structured observations about Han skill runs.
han-atlassian — Atlassian-facing Han skills for publishing Markdown and plans to Confluence and Jira.
han-linear — Linear-facing extensions to the Han suite: publish Han work items to Linear through the Linear MCP server, one issue per slice.
han-ddd — Strategic Domain-Driven Design analysis for the Han suite: domain boundary discovery, bounded context identification, and evidence-backed context mapping.
han-plugin-builder — Guidance and tooling for building Han-compatible skills, agents, and plugins.

About this listing

Han is a community plugin on GitHub by testdouble. Its README documents a Codex install and the repo ships a Codex plugin manifest. It passed the CodexStacks quality filter for repos found this way (at least 100 stars, pushed in the last 90 days, not a fork or a list). OpenAI hasn't reviewed it, but it passed our Codex install check on Oct 29, 2026 (an install and load check, not a code review). From its files we found 13 plugins. It's one of 441 listings in the Developer Tools category.

Han FAQ

How do I install Han in Codex?

Add the repo as a Codex plugin marketplace with codex plugin marketplace add testdouble/han, then install it with codex plugin add <plugin>@han. Commands: the command format from the Codex CLI reference; check the repo README too.

Is Han an official Codex plugin?

No. Han is a community repo on GitHub by testdouble. It passed the CodexStacks quality filter, but OpenAI hasn't reviewed it, but it passed our Codex install check on Oct 29, 2026 (an install and load check, not a code review), so read the code before you install it.

What does Han include?

From its manifest and repo files, Han includes 13 plugins: han-communication, han-core, han-documentation, han-research, han-planning, han-coding….

Details

Type: Plugin
Category: Developer Tools
Source: Community
Author: testdouble
License: MIT
GitHub stars: 327 (at last sync)
Last push: 2026-10-27
Manifest: .agents/plugins/marketplace.json
GitHub topics: claude, claude-code, claude-code-plugin, claude-skills, code-review, documentation, investigation, planning, review
Source: https://github.com/testdouble/han
Listed via: GitHub search: README documents a Codex install
Install check by CodexStacks: Passed on Oct 29, 2026 with Codex CLI 0.163.0: Codex loaded its skills. proof · how we check

Something wrong or missing? Submit or improve this listing. Listings also refresh automatically every night.

For maintainers: badge and embeds

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Markdown

[![Listed on CodexStacks](https://codexstacks.com/badge.svg)](https://codexstacks.com/p/han/)

HTML

<a href="https://codexstacks.com/p/han/"><img src="https://codexstacks.com/badge.svg" alt="Listed on CodexStacks" width="172" height="28"></a>

Embed card (static HTML and inline CSS, no JavaScript). Preview:

HanCommunity Codex plugin · 13 pluginsHan: AI skills and agents for "Solo" product engineers and small teamsView on CodexStacks →

<a href="https://codexstacks.com/p/han/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #3a2c26;border-radius:12px;background:#0d0b0a;color:#f3ece6;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#f3ece6">Han</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#b5a9a1">Community Codex plugin · 13 plugins</span><span style="display:block;margin:0 0 10px;color:#ddd3cc">Han: AI skills and agents for &quot;Solo&quot; product engineers and small teams</span><span style="font-size:12px;font-weight:600;color:#ffb347">View on CodexStacks →</span></a>

Markdown summary

**[Han on CodexStacks](https://codexstacks.com/p/han/)**: Community Codex plugin with 13 plugins.

More on badges, embeds and keeping your listing up to date: CodexStacks for plugin authors.

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