Which AI clients work with the Whimsical MCP server?

Claude (desktop and claude.ai), ChatGPT, Claude Code, Codex CLI, Gemini CLI, Cursor, VS Code, Windsurf, Cline, Continue, and anything else that speaks MCP or plain HTTP.

MCP servers · design

Whimsical MCP server

Visual collaboration — flowcharts, wireframes, mind maps, docs, sticky notes, and AI-powered diagramming. Hosted by 0n3: 18 endpoints your AI can call with your own Whimsical account, from Claude, ChatGPT, Cursor, Claude Code, Codex or Gemini CLI. One sign-in, one key per AI, a receipt for every call.

Connect Whimsical Install into your AI Watch it work

18 endpoints6 categoriesauth: oauthhosted

What your AI can do with Whimsical

Workspaces · List and view workspaces6

List workspacesGET /workspaces

Get a workspaceGET /workspaces/{workspaceId}

List boardsGET /workspaces/{workspaceId}/boards

Create a boardPOST /workspaces/{workspaceId}/boards

List docsGET /workspaces/{workspaceId}/docs

Create a docPOST /workspaces/{workspaceId}/docs

Boards · Create and manage whiteboards, flowcharts, wireframes6

Get a boardGET /boards/{boardId}

Update a boardPATCH /boards/{boardId}

Delete a boardDELETE /boards/{boardId}

Get a board exportGET /boards/{boardId}/export

Create a from mermaidPOST /boards/from-mermaid

Create a from textPOST /boards/from-text

Docs · Create and manage documents2

Get a docGET /docs/{docId}

Update a docPATCH /docs/{docId}

Users · SCIM user provisioning and management4

List scim usersGET /scim-v2/Users

Create a scim userPOST /scim-v2/Users

Update a scim userPUT /scim-v2/Users/{userId}

Deactivate scim userPATCH /scim-v2/Users/{userId}

Mind maps · Create and manage mind maps0

Create and manage mind maps

Generate diagrams · AI-powered diagram generation from text or Mermaid markup0

AI-powered diagram generation from text or Mermaid markup

Install in three steps

Create a free account at 0n3.app and connect Whimsical: paste a key or sign in through a door. It lands in your vault, encrypted.
Open 0n3.app/install, pick your AI. A key is made for that AI alone; copy the line it gives you.
Ask your AI: whoami. It answers with your connected services. Then ask it to list workspaces in Whimsical.

Install (user scope — every project)

claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"

Connect Whimsical to

Claude Code + WhimsicalMCP server + skill Claude (desktop & claude.ai) + Whimsicalconnector ChatGPT + Whimsicalconnector · GPT action Codex CLI + WhimsicalMCP server Gemini CLI + WhimsicalMCP server Cursor + WhimsicalMCP server VS Code (Copilot) + WhimsicalMCP server Windsurf + WhimsicalMCP server

More design MCP servers

Figma32 endpoints

Questions

What can an AI do with the Whimsical MCP server?

18 things: workspaces, boards, docs, users and more. Every call runs with your own Whimsical connection and lands on a receipt.

Do I need to run anything on my computer?

No. 0n3 is hosted. Connect Whimsical once, install 0n3 into your AI with one line, done.

Where does my Whimsical key go?

Into your 0n3 vault, encrypted, one record per connection. The AI never sees it.