Set up in Claude

Claude.ai and Claude Cowork use the same plugin setup. These steps add the Chucks marketplace, install the plugin, and activate its connector so Claude can search the current SRD, look up monsters, and build balanced or random encounters.

1. Open Customize

In the Claude sidebar, click Customize.

2. Start adding a marketplace

Next to Personal plugins, click the + button, then choose Create plugin → Add marketplace.

Claude Customize sidebar with the Create plugin menu open and Add marketplace highlighted

3. Paste the marketplace URL

In the dialog that appears, paste the marketplace URL and click Sync:

https://github.com/chucks-ai/claude

Add marketplace dialog with the Chucks repository URL pasted in

4. Install the plugin

Open the plugin directory, switch to the Personal tab, find the Chucks card, and click its + button.

Plugin directory with the Chucks card on the Personal tab

5. Enable auto-sync

At the top of the directory, click the … menu next to the chucks marketplace pill and turn on Sync automatically. This keeps the plugin up to date as we ship new tools and fixes.

Marketplace pill menu with the Sync automatically toggle

6. Activate the connector

Installing the Plugin doesn't connect Claude to Chucks. In the Customize sidebar, expand Chucks under Personal plugins and click Connectors. On the chucks card, click Install.

Claude Customize panel with the Chucks Connectors tab open and an Install button on the Chucks connector card

Full rules chapters are optional resources.

Claude lists the Chucks rules chapters under Resources. You do not need to turn them all on for ordinary rules questions; Chucks can retrieve the relevant material when needed. Toggle a chapter when you specifically want its full text kept in the conversation context.

7. Try it

Open a new Claude chat and ask Claude to check a rule, look up a monster, or build you an encounter.

Stuck? See your first encounter for a full worked example. Once everything works, try to check a rule or look up a monster.