Spacefast MCP

Build and share your AI work.

Turn an idea into a website, dashboard, report, or small web tool you can share. Build it in your conversation, or bring something you already made, and publish it with Spacefast.

Keep improving it through chat. Change the content or design, share a preview, choose who can open it, connect your own domain, or restore an earlier version.

Connect your Spacefast account to publish and manage your team’s Spaces.

Spacefast is by Automattic. This repository contains the connection examples, documentation, and MCP Registry entry for the hosted Spacefast server. The installable plugins and their skills live in spacefast/plugins.

Connect

Endpoint: https://mcp.spacefast.com

Spacefast serves one code-mode surface: search finds Spacefast API operations and reads their input and output types without calling them, and execute runs JavaScript that calls them. Publishing, approvals, and the visual MCP Apps sit alongside those two tools.

Transport: Streamable HTTP. Use a client that supports remote MCP servers and browser OAuth.

GitHub Copilot and other compatible clients

Add this to .mcp.json in your project. Merge the spacefast entry into any existing mcpServers object.

{
  "mcpServers": {
    "spacefast": {
      "type": "http",
      "url": "https://mcp.spacefast.com"
    }
  }
}

The same configuration is available in .mcp.json. For a user-wide Copilot configuration, use ~/.copilot/mcp-config.json.

VS Code also supports .vscode/mcp.json, which uses servers as its top-level key:

{
  "servers": {
    "spacefast": {
      "type": "http",
      "url": "https://mcp.spacefast.com"
    }
  }
}

See the VS Code example and VS Code MCP setup guide. Start the server from your client’s MCP settings and complete the Spacefast sign-in flow. Enable its tools in your agent session.

Claude Code

For the MCP connection:

claude mcp add --transport http spacefast 'https://mcp.spacefast.com'

Run /mcp in Claude Code and follow the browser sign-in flow.

To install the Spacefast plugin with its skills, use:

claude plugin marketplace add spacefast/plugins
claude plugin install spacefast@spacefast

See the Spacefast Claude Code setup guide for the full plugin setup.

goose

In goose Desktop, open Extensions → Add custom extension. Choose Streamable HTTP, name it Spacefast, and set the URL to https://mcp.spacefast.com. Add the extension and complete the Spacefast sign-in flow in your browser. No API key or custom headers are needed.

For the CLI, run goose configure, select Add Extension → Remote Extension (Streamable HTTP), and use the same name and URL.