MCP GRID Tool Builder

Example Use Cases

• 1

  Prototype and test MCP tools locally or from external servers.

• 2

  Create and manage custom API or JavaScript-based MCP tools with schema-driven forms.

• 3

  Connect to external MCP servers securely with support for SSE and Streamable HTTP transports.

Description

MCP GRID is a Next.js 15 playground for the Model Context Protocol (MCP) that enables users to run built-in tools, create custom API or JavaScript logic tools, and connect to external MCP servers. It supports schema-driven forms, multiple storage modes including localStorage and Postgres with GitHub authentication, and provides a clean UI for prototyping and testing MCP tools. The app also includes server-side proxies to handle CORS and long-lived connections for SSE or Streamable HTTP transports.