Lucid (Lucidchart / Lucidspark)

Platform

Diagramming and whiteboard suite with a REST API for documents and content

Price: Free plan; paid plans on pricing page
Access: API key or OAuth 2.0

About

Lucid is a visual collaboration suite: Lucidchart for flowcharts and diagrams, Lucidspark for whiteboarding, and Lucidscale for cloud diagrams, sharing one document model. The Lucid REST API manages documents and folders; an Extension API adds shapes and import inside Lucid itself.

What you can do with it

Create, read and manage Lucidchart or Lucidspark documents and folders via the REST API
Generate or update a Mermaid diagram inside a Lucid document from markup
Build an in-editor extension that imports data or adds a custom shape library

Get started

Create an API key, or register an OAuth 2.0 client, in Lucid account settings
Send the key as a Bearer token, or complete the OAuth 2.0 code flow
Call the REST API against api.lucid.co with the granted scopes

Example

curl "https://api.lucid.co/v1/accounts/me" \
  -H "Authorization: Bearer $LUCID_API_KEY" \
  -H "Lucid-Api-Version: 1"

Details

Hosting: Hosted service
Available in: Worldwide
MCP server: None