D&D Beyond MCP Server
A Model Context Protocol (MCP) server that gives Claude direct access to your D&D Beyond account — characters, campaigns, sourcebooks, spells, monsters, and more.
Features
| Tool | Description |
|---|---|
ddb_login | Authenticate with D&D Beyond (Wizards ID). Run once to save your session to disk. |
ddb_list_characters | List all characters in your account with ID, level, race, and class. |
ddb_get_character | Fetch full character JSON from the D&D Beyond character API. |
ddb_download_character | Save a character's full JSON data to a local file. |
ddb_list_campaigns | List all campaigns you're part of (as DM or player). |
ddb_get_campaign | Fetch campaign details — DM, description, and active characters. |
ddb_list_library | List all sourcebooks you own, purchased, or have shared with you. |
ddb_read_book | Read content from an owned sourcebook, optionally by chapter slug. |
ddb_search | Search for spells, monsters, magic items, races, classes, or feats. |
ddb_navigate | Navigate to any D&D Beyond URL and return its text content. |
ddb_interact | Click, fill, or screenshot the currently loaded browser page. |
ddb_current_page | Return the text content of whatever page is currently loaded. |
Prerequisites
- Node.js 18 or later
- Claude Code CLI
Installation
Option A — Install directly from GitHub (recommended)
npm install -g github:ddb-mcp/ddb-mcp
This clones the repo, installs dependencies, and builds automatically. Then install the browser:
npx playwright install chromium
Find the install path and register with Claude Code:
npm root -g
# outputs something like /usr/local/lib/node_modules
claude mcp add dndbeyond node /usr/local/lib/node_modules/ddb-mcp/dist/index.js
Option B — Clone and build manually
git clone https://github.com/ddb-mcp/ddb-mcp.git
cd ddb-mcp
npm install
npx playwright install chromium
Register with Claude Code:
claude mcp add dndbeyond node /absolute/path/to/ddb-mcp/dist/index.js
Or edit ~/.claude/settings.json manually:
{
"mcpServers": {
"dndbeyond": {
"command": "node",
"args": ["/absolute/path/to/ddb-mcp/dist/index.js"]
}
}
}
Usage
First-time login
The first time you use the server, you need to authenticate:
ddb_login
A browser window (Chrome for Testing) will open and navigate to the D&D Beyond login page. Complete the login using your Wizards ID account. Once you're redirected back to D&D Beyond, your session is automatically saved to ~/.config/ddb-mcp/session.json and reused on all future calls.
You only need to log in once. If your session expires, just run ddb_login again.
Example prompts
List your characters:
List all my D&D Beyond characters
Get full character data:
Get the full character sheet for character ID 140476673
List your campaigns:
What campaigns am I part of on D&D Beyond?
Get campaign details:
Show me the details for campaign 6709239, including all the player characters
Search for spells:
Search D&D Beyond for spells named "Fireball"
Search for monsters:
Find the Beholder stat block on D&D Beyond
Read a sourcebook:
Show me the table of contents for the Player's Handbook
Read the Barbarian class section from the Player's Handbook
Download a character:
Download the character data for Roland Stonehelm to my Downloads folder
Finding character and campaign IDs
- Character ID: The number in the character URL —
dndbeyond.com/characters/140476673 - Campaign ID: The number in the campaign URL —
dndbeyond.com/campaigns/6709239
You can also use ddb_list_characters and ddb_list_campaigns to get IDs without leaving Claude.
Book slugs for ddb_read_book
Use ddb_list_library to get the slug for any book you own. Examples:
| Book | Slug |
|---|---|
| Player's Handbook (2024) | dnd/phb-2024 |
| Dungeon Master's Guide (2024) | dnd/dmg-2024 |
| Monster Manual (2024) | dnd/mm-2024 |
| Player's Handbook (2014) | dnd/phb-2014 |
To read a specific chapter, pass the chapter path after the book slug:
ddb_read_book("dnd/phb-2024", "character-classes/barbarian")
Session storage
Your session is saved to ~/.config/ddb-mcp/session.json. This file contains browser cookies and local storage from your D&D Beyond login. Keep this file private — it grants access to your account.
To log out or reset your session, delete the file:
rm ~/.config/ddb-mcp/session.json
Development
# Run in development mode (no build step needed)
npm run dev
# Build
npm run build
# Watch mode
npm run build:watch
License
MIT