GAMESLASHHidden Door launches MCP beta for building story worlds with AI agents
By GameSlash
Agents can create, import and revise narrative-world drafts using Atlas tools, while publication and play remain in Atlas Studio.
Hidden Door announced a beta MCP server on October 30, 2026, opening its narrative-world creation tools to external AI agents. Creators can ask an agent to turn an idea or existing writing into a world draft, then revise characters, locations and storylines through conversation.
The announcement demonstrates importing The Legend of Sleepy Hollow and then revising its world. The character card below is one of Hidden Door’s examples, not a result from our own test.
Worldbuilding tools outside the editor
The integration exposes tools already available in Atlas Studio. An agent can propose changes, show a preview for review and save drafts to the creator's account. The company says the MCP does not publish worlds or start games; playing and sharing remain in Atlas Studio.
The beta requires a Hidden Door Creator plan. The official plugin bundles the MCP connection and workflow skills for agents, with setup instructions for Claude Code and Codex. Writing and requested edits are sent to Hidden Door when the integration is used.
A second example shows the resulting storyline as an editable structure: its editorial purpose, four narrative beats, locations and play conditions are visible in Atlas. This is a draft creators can inspect and revise, not proof that the MCP can publish or play the world.
