Hamster MCP server

Hamster

Install Hamster. One plugin. Talk through hosted MCP or the CLI. Keep the plan on disk, then ship from it.

This is the Hamster product: Agent Plugins skills on every supported client, hosted MCP on every client that installs from GitHub or a marketplace, plus generated native execution workers on Claude Code where that client registers them. The CLI is how the plan stays in this repo. It is not a second install.

Install

Installation differs by client. If you use more than one, install Hamster separately for each one.

Cursor

1. Customize → Add Marketplace → Import from GitHub.
2. Paste https://github.com/gethamster/plugin and select Import.
3. Open the Hamster marketplace tab and select Add.

On Enterprise, an admin must allow marketplace imports. Once Hamster is on the Cursor marketplace, /add-plugin hamster works too:

/add-plugin hamster

Grok Bot is not a separate Hamster package. It uses the same Cursor account and plugin library, so the Cursor install above is the Grok Bot install. Do not run /add-plugin in the Grok Bot chat.

Claude Code

/plugin marketplace add gethamster/plugin
/plugin install hamster@hamster-plugins

Codex CLI

codex plugin marketplace add gethamster/plugin
codex plugin add hamster@hamster-plugins

You can also launch codex, run /plugins, and install hamster@hamster-plugins.

Codex Plugins Directory

The Hamster listing in Codex's Plugins Directory is a skills-only build of this same skills tree, produced by node scripts/build-codex-skills-bundle.mjs. A directory install carries the skills and nothing else, so it does not register the hosted MCP connector: Ask Hamster answers through hamster chat there unless you add the connector yourself, as described in Advanced: hosted MCP without the plugin. The GitHub and marketplace installs above are unaffected and keep the connector.

Antigravity

From this repository:

agy plugin install .

Or from GitHub:

agy plugin install https://github.com/gethamster/plugin

If Hamster 3.2 is already installed, uninstall it before you install 3.4. An in-place Antigravity install retains the four skill directories renamed in 3.4.

agy plugin uninstall hamster
agy plugin install https://github.com/gethamster/plugin

After install

1. Talk — hosted MCP at https://tryhamster.com/mcp, or hamster chat when MCP tools are unavailable and the CLI is signed in. Your client owns the Hamster sign-in.
2. Plan on disk — say Install Hamster, or run ship. The setup skill installs the CLI if needed, runs hamster auth login, and syncs the plan.
3. Ship — execute the brief already on disk. Nothing runs automatically on session start.

Skills

Claude Code lists these as /hamster:. Cursor lists them as /. The table uses the Claude form.

Shortened. The full README is on GitHub.