Lucid Software · Codex
Add the Lucid MCP server to Codex
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1. Add the server
Run in your terminal
codex mcp add lucid --url https://mcp.lucid.app/mcp
Scopes, env vars, OAuth and limits: Codex MCP config guide
2. Sign in
Run codex mcp login <name> to complete OAuth for a remote server. Lucid is hosted by Lucid Software, so there is nothing to install or keep updated.
3. Try it
Ask Codex for something Lucid can do. Search, summarize, create, edit and share Lucid diagrams and documents from an AI client. Approve the first tool call and check the result before allowing write actions automatically.
- · Each server is a [mcp_servers.<name>] table in config.toml.
- · Use enabled_tools or disabled_tools to keep the tool list short.
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FAQ
- How do I add the Lucid MCP server to Codex?
- Run: codex mcp add lucid --url https://mcp.lucid.app/mcp. Run codex mcp login <name> to complete OAuth for a remote server.
- Is this the official Lucid MCP server?
- Yes. It is published by Lucid Software as app.lucid.mcp/lucid in the official MCP registry.
- Does the Lucid MCP server need an API key?
- It is a hosted server. Most hosted servers sign you in with OAuth the first time Codex uses them; check Lucid Software's docs for any plan or permission requirements.
Links
Lucid in other clients
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Reviewed Oct 19, 2026. Command generated from the registry record and checked against Codex's documented syntax.