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Add the Pieces MCP server to Cursor

Config last verified Nov 10, 2026

The exact config to run Pieces in Cursor — paste it in, restart, and the tools load.

Prerequisites

  • Cursor installed.

Setup

1. Open ~/.cursor/mcp.json

2. Add this configuration

Add to ~/.cursor/mcp.json

~/.cursor/mcp.json
json
{
  "mcpServers": {
    "pieces": {
      "url": "http://localhost:39300/model_context_protocol/2025-03-26/mcp"
    }
  }
}

3. Restart Cursor and confirm the Pieces tools load.

Gotchas

Cursor keeps MCP servers under an "mcpServers" object in ~/.cursor/mcp.json for global use, and also reads a project-scoped .cursor/mcp.json so a repository can ship its own servers. Remote servers are configured with a bare "url" field and connect natively, with OAuth handled in-app when a server requires it.

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