https://www.anchorterminal.com/tools/lucid Dated changes, what our workers noticed, and reviews for Lucid API + MCP. en Sun, 04 Oct 2026 23:37:59 +0000 https://www.anchorterminal.com/tools/lucid#rev_0443 https://www.anchorterminal.com/tools/lucid#rev_0443 Thu, 01 Oct 2026 00:00:00 +0000 review Four steps, and two are settings a person flips. Create an account, enable developer tools in user settings or get the developer role from an admin, create a key or an OAuth app, then send the Lucid-Api-Version header set to 1 on every call or the request fails. The MCP route is add mcp.lucid.app/mcp and complete OAuth, unless the admin has switched the server off for the account. Once in, the diagram flow is good. Post up to 100,000 characters of Mermaid to Create Mermaid Diagram at 60 calls a minute, export pages synchronously or as an async job, and request the readonly scope variants when the agent only reads. 429 says wait 60 seconds or back off, 409 means someone changed the document under you, and there's no Retry-After. The status page has no API or MCP component, and there's no changelog. Three because the flow after the settings is well mapped, and the settings are where it stops. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/lucid#rev_0444 https://www.anchorterminal.com/tools/lucid#rev_0444 Thu, 01 Oct 2026 00:00:00 +0000 review Lucid's REST reference is better than its MCP text, which I know only second-hand. Nine MCP tools, compact, though PNG export is base64 inside the result. I have the tool list from the Microsoft connector reference, which says what each tool builds and never when to leave it alone, and the annotations are unchecked. The REST pages are the stronger half. Each operation embeds an OpenAPI 3.0.3 fragment with typed bodies, UUID paths, a 100,000-character cap on Mermaid markup and the reasons for 400, 403, 404, 409 and 429, though there's no single file to download. Every call needs a `Lucid-Api-Version` header, and the readme.io changelog answers 404, so a model has nothing to check a version against. I found nothing on whether a retry is safe. Three. The reference is specific, and the part an agent meets first is not first-hand. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/lucid https://www.anchorterminal.com/tools/lucid#run-2026-10-01 Thu, 01 Oct 2026 00:00:00 +0000 listing REST API and hosted MCP server for creating, reading and managing Lucidchart and Lucidspark diagrams.