Lucid MCP Server

Connect your AI tools to Lucid to intelligently search for files, create visuals, and share with your team.

The Lucid Model Context Protocol (MCP) server is a cloud-hosted bridge between your Lucid documents and AI tools such as ChatGPT, Claude, Microsoft Copilot, and Cursor. Once connected, you can use natural language to search, retrieve, edit, summarize, and create Lucid documents from inside your AI client.

• Endpoint: https://mcp.lucid.app/mcp
• Transport: Streamable HTTP
• Auth: OAuth 2.0 with Dynamic Client Registration (DCR)
• Plans: Free, Individual, Team, and Enterprise. Not available on FedRAMP accounts.
• Marketplace listing: lucid.co/marketplace/e16391cc/lucid-mcp-server
• Setup guide: Integrate Lucid with AI tools using the Lucid MCP server

What you can do

With the Lucid MCP server connected, you can prompt your AI tool to:

• Search Lucid documents for specific content
• Summarize document details and action items
• Create shareable links with the permission level you specify
• Share documents with collaborators by email
• Create diagrams from a natural-language prompt
• Create org charts from a CSV file or text
• Edit, add, or delete shapes in an existing document
• Generate UML sequence diagrams from PlantUML markup
• Export documents as PNG
• Fetch images attached to shapes in a document
• Convert visual output from Claude into a Lucid document

Example prompts

"Show me all Lucid documents that talk about the website redesign project."

"Find the 'Q4 Website Redesign Workflow' document in Lucid, and give me a summary of action items."

"Create a diagram in Lucid that maps out a user authentication flow."

"In my Lucid IT Escalation Process document, update all decision blocks to a red fill with bold white text."

"Create a shareable link with view-only permissions for my 'FY26 Q3 Product Roadmap' document in Lucid."

Supported clients

The Lucid MCP server is compatible with any MCP client. For one-click setup, Lucid offers dedicated connectors for ChatGPT and Claude:

• Connect Lucid to ChatGPT
• Connect Lucid to Claude

For other clients, follow the MCP-setup docs for your tool of choice and use the server URL https://mcp.lucid.app/mcp:

This is not an exhaustive list — the Lucid MCP server works with any MCP-compatible client.

AI tools you set up with the Lucid MCP server are Non-Lucid Applications (as defined in our Terms of Service). Your use of these AI tools is subject to the agreement between you and the third-party provider.

Cursor plugin

Install the Cursor plugin for bundled MCP config and a unified Lucid agent skill:

/add-plugin lucid

See cursor/README.md for Cursor-specific setup, skills, and example prompts.

JSON config

Some clients require you to edit a JSON config file directly.

If your client supports the HTTP transport:

"Lucid Software": {
  "type": "http",
  "url": "https://mcp.lucid.app/mcp"
}

If your client does not support HTTP transport, use the mcp-remote Node.js package to forward stdio requests to the Lucid MCP server. Node.js must be installed.

"Lucid Software": {
  "command": "npx",
  "args": ["-y", "mcp-remote", "https://mcp.lucid.app/mcp"]
}

For admins: enable or disable the MCP server

Admins on Team and Enterprise accounts can control whether users can connect to the Lucid MCP server.

1. In your Lucid account, select Admin from the left-side panel.
2. Click Security in the left-side menu.
3. Select Feature controls.
4. Under MCP access, use the toggle next to Allow users to connect.
5. Confirm with Enable MCP or Disable MCP in the modal.

Granting access allows users to connect from any AI client. To restrict access to specific AI tools, you'll need to disable the MCP server at the account level.

Authentication & data handling

• Authentication uses OAuth 2.0 with Dynamic Client Registration (DCR).
• The Lucid MCP server can access any Lucid document you have permission to access within your account. It cannot access documents owned by users outside your account.
• The server acts as a pass-through — it does not retain document content, user prompts, or queries. Your credentials are never shared outside your Lucid account.

FAQ

See FAQ.md for answers to common questions about how the server works, what it can access, how data is handled, the diagram types it can create, and how it differs from standard text-to-AI connections.

Support & feedback

• Setup help: Lucid Help Center article
• Issues & feature requests: Open an issue in this repository
• General Lucid support: lucid.co/support

License

Apache License 2.0 © Lucid Software Inc.