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Lucid MCP Server

by lucid-mcp Your server? Claim it
answering

Lucid is answering right now. Last checked 3 min ago. Last commit 22 Sep 2026.

Lucid’s connector creates diagrams, searches, edits, shares, and retrieves docs to summarize.

Uptime history 52 days of history · worst day 99%
52 days agonow
100.0%
Uptime 24h
92 of 92 checks
Tools
hidden behind auth
444 ms
Response time
average over 24h
2
Stars
last commit 22 Sep 2026

Lucid missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

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Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

run in your terminal
claude mcp add lucid --transport http https://mcp.lucid.app/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "lucid": {
      "url": "https://mcp.lucid.app/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.lucid]
url = "https://mcp.lucid.app/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "lucid": {
      "url": "https://mcp.lucid.app/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "lucid": {
      "url": "https://mcp.lucid.app/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URLTransportStateLatencyChecked
https://mcp.lucid.app/mcp streamable-http needs auth 551 ms 3 min ago

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Lucid — questions

Answers built from our own checks of this server.

Why is there no tool list for Lucid?
The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.
Is Lucid working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 444 ms. The bar chart above shows every period we have measured.
How do I connect Lucid?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own credentials: it refuses anonymous clients.
Does Lucid need an API key?
Yes. Every time we knock, Lucid answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is Lucid?
It answers our handshake in 444 ms on average, which is faster than 35% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Lucid open source?
Yes — it is published under the Apache-2.0 licence and 2 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.