Using AI to Read and Write Your World: MCP for Worldbuilders

Loreum includes an MCP (Model Context Protocol) server that lets AI assistants like Claude read your world data and propose changes that you review before they go live. Here is what that means and why it matters.

What is MCP?

MCP (Model Context Protocol) is an open standard that lets AI assistants connect to external tools and data sources. When you connect Loreum's MCP server to Claude, the AI can search your entities, read relationships, browse the timeline, pull your style guide, and propose new content, all through structured tools backed by your world's API.

What can you do with it?

Ask questions about your world

"Who are Luke Skywalker's allies?" Claude queries the knowledge graph and returns a natural language answer. No more scrolling through pages to find a connection.

Check for consistency

"Is there anything contradictory about the timeline of the Galactic Civil War?" Claude reads your timeline events, cross- references entity appearances, and flags potential issues.

Generate content in your style

"Write a backstory for this new character that fits with the existing faction dynamics." Claude reads the relevant factions, relationships, lore, and your style guide, then generates a backstory that is consistent with both your world and your prose style.

Create and modify world data

"Create a new location called the Iron Citadel in the Northern Wastes." Claude calls the create tool and the location appears in your world, tagged and linked the way you asked. Grant read-only access instead if you want the AI to consult your canon without editing it.

You stay in control

Every app you connect is approved by you, for one world, with the access level you choose. Connected apps are listed in the world's settings and can be disconnected in one click, which immediately invalidates their access. A review queue, where AI-proposed changes wait for your approval with a diff view, is next on the roadmap.

How to set it up

Open your world's settings, copy its MCP URL, and add it as a custom connector in Claude (Settings → Connectors → Add custom connector). Claude sends you to Loreum to sign in and approve, and you're done. There's nothing to install and no key to paste. Claude Code works the same way:

claude mcp add --transport http loreum https://api.loreum.app/v1/mcp/your-world

Read tools (16)

Query your world data: search across all content, get individual entities with their relationships and lore, browse the storyboard down to scene prose, read the timeline and eras, and list lore articles and tags. Available to every connection.

Write tools (20)

Create, update, and delete entities, relationships, lore articles, timeline events and eras, plotlines and plot points, works, chapters, and scenes. Only offered to connections you approved with read & write access.

Why this matters

Most AI writing tools work in isolation. They generate text without context. With MCP, the AI has access to your entire world: characters, backstories, faction dynamics, timeline, and your writing style. The generated content is grounded in your world instead of generic.

The review queue means you stay in control. The AI proposes and you decide. No surprises in your canon.

The MCP server is free and open source. You bring your own AI and tokens. No vendor lock-in, no per-query charges from Loreum.