0n3
MCP servers · Whimsical · connector

Connect Claude (desktop & claude.ai) to Whimsical

One line gives Claude (desktop & claude.ai) your Whimsical account as tools: 18 endpoints, workspaces, boards, docs, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude (desktop & claude.ai)'s access alone any time.

Get the line for Claude (desktop & claude.ai)Connect Whimsical first

Three steps

  1. Create a free 0n3 account and connect Whimsical. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Claude (desktop & claude.ai). Add 0n3 as a custom connector; sign in once through the 0n door.
  3. Ask Claude (desktop & claude.ai): whoami. Then: "List workspaces in Whimsical".
Claude desktop app and claude.ai
  1. Settings → Connectors → Add custom connector
  2. Name: 0n3 · URL: https://0n3.app/mcp
  3. Click Connect and sign in with your 0n account (email + password, or paste your 0n token)
  4. Turn the connector on in a chat and ask: "whoami"

This is the OAuth door: no token to paste, revoke it any time from 0n3 → Tokens.

The line above carries a placeholder; 0n3.app/install mints a real key named for Claude (desktop & claude.ai) and fills it in.

What Claude (desktop & claude.ai) can then do in 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

Whimsical in other AI clients

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Claude (desktop & claude.ai) with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints