Whimsical MCP Server

The Whimsical MCP server connects an AI agent to a Whimsical workspace. It can create and edit boards, docs, flowcharts, mind maps, sequence diagrams, wireframes, tables and sticky notes, and read, search and comment on content that already exists. Authentication is OAuth 2.1 with PKCE, so there is no API key to manage, and a free Whimsical account can use every tool. It is available as a remote MCP endpoint.

Teams that want a hosted documentation endpoint instead of running a local process.

VERIFIED ACTIVE

LAST COMMIT 2026-09-09 · ★ 5 · #171 OF 208 MAINTAINED DOCUMENTATION · VERIFIED 2026-09-18

MIT · how we verify → /methodology

01 · Install Whimsical

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add whimsicalcode-mcp-server-guide --transport http https://mcp.whimsical.com/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "whimsicalcode-mcp-server-guide": {
      "url": "https://mcp.whimsical.com/mcp"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://mcp.whimsical.com/mcp

transport: streamable-http

endpoint alive - authentication required · probed 2026-09-18

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as remote - your agent's requests go to mcp.whimsical.com

endpoint auth requires authentication - rejected our unauthenticated MCP initialize

license MIT - declared in the repository

registry vendor namespace com.whimsical - domain-verified with the official MCP registry

03 · Who maintains Whimsical

Whimsical is maintained by whimsicalcode. It's the only MCP server we track from this author; the repo dates to Mar 2026.

04 · Facts

repository: github.com/whimsicalcode/mcp-server-guide
website: https://whimsical.com/mcp
category: documentation - ranked #171 of 208 actively-maintained documentation servers as of 2026-09-18.
registry: com.whimsical/mcp (active, first published 2026-08-13 · 2 versions)

05 · Whimsical FAQ

What is Whimsical?

Is Whimsical still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-09. We re-verify nightly.

How do I install Whimsical?

Run `claude mcp add whimsicalcode-mcp-server-guide --transport http https://mcp.whimsical.com/mcp`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does Whimsical require authentication?

Yes - when we probed the endpoint on 2026-09-18, it rejected an unauthenticated MCP initialize; you'll need credentials to connect.

06 · Alternatives to Whimsical

Alternatives to Whimsical

Maintained documentation servers if Whimsical isn't the fit.

Pairs well with

Servers that cover what Whimsical doesn't - only shown when the pairing reason fits the companion.

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