TWTAI Skills — a sample Claude Code marketplace

A complete, working reference marketplace for the Tech Writer's Tribe (TWT) AI program. It exists to show participants how the pieces fit together — a marketplace that contains a plugin, and a plugin that bundles a command, a skill, an agent, a hook, and (remote) MCP servers — plus a standalone script and a sample doc to test on.

Clone it, read it, install it, then build your own the same way.

The hierarchy at a glance

twtai-skill/                          ← THIS REPO = a marketplace
├── .claude-plugin/
│   └── marketplace.json              ← the catalog (lists plugins)
├── plugins/
│   └── doc-skills/                    ← a PLUGIN (the installable bundle)
│       ├── .claude-plugin/plugin.json ← plugin manifest
│       ├── commands/                  ← COMMANDS  (/doc-skills:check-style)
│       │   ├── check-style.md
│       │   └── release-notes.md
│       ├── skills/                    ← SKILL     (auto-invoked SKILL.md)
│       │   └── doc-coverage/SKILL.md
│       ├── agents/                    ← AGENT     (delegated subagent)
│       │   └── doc-auditor.md
│       ├── hooks/                     ← HOOK      (event handler)
│       │   └── hooks.json
│       └── .mcp.json                  ← MCP SERVERS (remote, no setup)
├── examples/
│   └── remote-mcp/                    ← connect to an online MCP server (no plugin)
│       ├── .mcp.json
│       └── README.md
├── scripts/
│   └── check-links.mjs                ← a simple standalone SCRIPT
└── sample-docs/
    └── orders-api.md                  ← a flawed doc to test everything on

Marketplace ≠ plugin. The marketplace is the catalog; the plugin is the thing you install. One marketplace can list many plugins.

Use it (as an individual)

/plugin marketplace add AmanProjects/twtai-skill   ← add the catalog
/plugin install doc-skills@twtai                    ← install the plugin

twtai is the marketplace name from marketplace.json (not the repo name). After installing, these are available:

Component	How you use it
Command	/doc-skills:check-style sample-docs/orders-api.md
Command	/doc-skills:release-notes <changelog or git log>
Skill	doc-coverage — auto-invoked when you ask "what's missing in this doc?"
Agent	doc-auditor — delegated for a full doc-set audit
MCP (remote)	Ask: "Using DeepWiki, summarize the architecture of repo X"

The MCP servers are remote and safe

This repo deliberately uses online, hosted MCP servers so there is nothing to install or run — and both are read-only with no login or API key, which makes them safe for a classroom:

Server	URL	What it does
DeepWiki (Cognition/Devin)	https://mcp.deepwiki.com/mcp	Ask questions about any public GitHub repo's docs
Claude Code Docs (Anthropic)	https://code.claude.com/docs/mcp	Search the official Claude Code documentation

Installing the doc-skills plugin connects them automatically. To connect without the plugin, see examples/remote-mcp/ — it shows both the one-line claude mcp add command and the shareable project .mcp.json.

Try the standalone script (no install needed)

node scripts/check-links.mjs README.md

Dependency-free Markdown link checker (Node 18+). Reports broken http(s) links and missing relative files. (Try it on README.md — which has real links — rather than the sample doc, whose only URL sits inside a code block.)

Build your own marketplace (the 5-minute loop)

1. Create a GitHub repo.
2. Add .claude-plugin/marketplace.json at the root.
3. Add a plugin folder with .claude-plugin/plugin.json and your skills in commands/.
4. Commit and push.
5. Share two lines: /plugin marketplace add you/your-repo and /plugin install your-plugin@your-marketplace.

Covered in Module 4 of the TWT program. This repo is the worked example.