Lucid MCP: diagrams and documents from your AI app

Lucid's MCP server lets your AI app create diagrams, search and edit your Lucid documents, share them, and pull a document's content so it can be summarized. ContextGate connects it to Claude, ChatGPT and Cursor with a Lucid sign-in, and sharing can be switched off so a diagram only leaves your team when a person shares it.

  • Ready to connect
  • Free

Connect Lucid to Claude, ChatGPT or Cursor

  1. 1Click Connect Lucid free and sign in with your Lucid account.
  2. 2The full tool list appears after you sign in, with every tool on. Keep creating, searching and reading; switch off sharing if documents should only be shared by a person, and editing if your AI app should leave existing diagrams alone.
  3. 3Add ContextGate to your AI app as a connector or MCP server. The steps for each app are on the Works with page.
  4. 4Ask your AI app to find your team's architecture diagram in Lucid and summarize it, then open Activity to see the calls.

Diagramming with Lucid from a chat

  • Describe a process or system and have your AI app create a Lucid diagram of it.
  • Search your Lucid documents and pull one in to summarize.
  • Edit an existing document or share it without leaving Claude, ChatGPT or Cursor.

Control what happens to your Lucid documents

  • Switch off editing or sharing, and Claude, ChatGPT and Cursor no longer see those tools.
  • Policies check every call, so personal data in a document your AI app reads can be hidden.
  • Activity records each call, so you can see which documents an AI app created, edited or shared.

What you get with Lucid and ContextGate

  • Your AI apps can use LucidClaude, Cursor, ChatGPT and other AI apps reach Lucid through the one ContextGate connection you add to them.
  • You choose which tools they can useSwitch off any Lucid tool you don't want used. It's hidden from your AI apps and refused if called.
  • Every call is checked and recordedYour policies check each call (for example, personal data is hidden and secrets are blocked), and Activity keeps a record of it.

ContextGate sees only the tool calls that go through it, not your AI app's built-in tools or your chats.

Lucid tools

Lucid's own MCP server shows its tools once you sign in. When you connect it, they are listed and synced in your workspace.