Lucid — Claude Code MCP server: what it does, how to install
Lucid connects an AI client with Lucid documents for search, summaries, diagram creation, and document edits.
claude mcp add --transport http lucid https://mcp.lucid.app/mcpWhat Lucid does
Lucid is a cloud MCP server that lets an AI client work with Lucid documents through natural-language requests. It can search document content, summarize details and action items, build diagrams and org charts, modify or remove shapes, create UML sequence diagrams from PlantUML, and produce PNG exports. It can also create permissioned sharing links and share documents with collaborators by email.
The connection uses Streamable HTTP at https://mcp.lucid.app/mcp, with OAuth 2.0 and Dynamic Client Registration for authentication. A client without HTTP support can route requests through npx and mcp-remote, which requires Node.js. Access follows the Lucid documents available to your account, while Team and Enterprise administrators can control MCP access for users.
Claude Code needs one MCP registration command, followed by the OAuth sign-in flow. FedRAMP accounts cannot use this server, so that restriction applies before setup.
What it helps with
- search Lucid documents by their content
- summarize a document and its action items
- turn a text description into a diagram
- update shapes in an existing Lucid file
- create a link with selected permissions
Example prompts for the agent
- Search Lucid for documents about the website redesign and summarize the related tasks.
- Create a Lucid diagram showing the user authentication flow.
- In the Lucid escalation-process document, recolor every decision shape and use bold white labels.
How to install Lucid
Platform CLI: remote server
claude mcp add --transport http lucid https://mcp.lucid.app/mcpPlatform CLI: remote server
codex mcp add lucid --url https://mcp.lucid.app/mcpConfig file
{
"mcpServers": {
"lucid": {
"url": "https://mcp.lucid.app/mcp"
}
}
}Config file
{
"servers": {
"lucid": {
"type": "http",
"url": "https://mcp.lucid.app/mcp"
}
}
}Platform CLI: remote server
gemini mcp add -t http lucid https://mcp.lucid.app/mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about Lucid
How do I install Lucid in Claude Code?
Run claude mcp add --transport http lucid https://mcp.lucid.app/mcp, then complete the OAuth 2.0 authorization flow in the client.
What does Lucid do?
It connects an AI client to Lucid documents. The server supports document search and summaries, diagram creation, shape edits, and controlled sharing links.
What does Lucid require to work?
The client must support MCP and OAuth 2.0 with Dynamic Client Registration. For clients without HTTP transport, install Node.js and use mcp-remote.
