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rollup-plugin-mcp

@situ2001

About rollup-plugin-mcp

A unified plugin for developers integrating MCP servers into modern JavaScript build tools, including Webpack, Rollup, Vite, and more.

Basic information

Category

Developer Tools

License

MIT

Runtime

node

Transports

stdio

Publisher

situ2001

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "rollup": {
      "type": "http",
      "url": "http://localhost:14514/mcp/sse"
    }
  }
}

Tools

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We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is rollup-plugin-mcp?

rollup-plugin-mcp is a plugin for Rollup that creates and manages an MCP (Model Context Protocol) server. It provides tools that let AI assistants inspect your codebase, analyze build configuration, debug errors, and even control the build process. It is part of the unplugin-mcp ecosystem, which also supports Vite, Webpack, ESBuild, Rspack, and Rolldown.

How to use rollup-plugin-mcp?

Install with pnpm add -D rollup-plugin-mcp (alternatively unplugin-mcp). In your rollup.config.js, import the plugin and add it to the plugins array, providing built-in tools like ModuleTool, BuildConfigTool, and BuildErrorTool. Run Rollup in watch mode (rollup -w) to start the server. In Cursor, add an MCP server entry in ~/.config/cursor/mcp.json pointing to http://localhost:14514/mcp/sse.

Key features of rollup-plugin-mcp

  • Cross‑platform MCP integration across multiple build tools.
  • Bi‑directional AI Integration: context and build control.
  • Rich built‑in tools for dependencies, config, errors.
  • Extensible Tool Framework via UnpluginMcpTool interface.
  • Build Process Integration at any plugin hook.
  • Persistent server in watch mode for continuous AI interaction.
  • Standard transport using HTTP and Server‑Sent Events (SSE).

Use cases of rollup-plugin-mcp

  • AI assistant analyzing module dependencies during a Rollup build.
  • AI assistant inspecting build configuration to verify settings.
  • AI assistant debugging build errors by querying the server.
  • AI assistant modifying the build process through custom tools.
  • Continuous AI interaction in watch mode after build completion.

FAQ from rollup-plugin-mcp

What build tools does it support?

It supports Rollup, Vite, Webpack, ESBuild, Rspack, and Rolldown via the unplugin framework. The rollup-plugin-mcp package is specifically for Rollup.

How does the server communicate with AI clients?

The server uses HTTP with Server‑Sent Events (SSE) as the transport layer, compatible with MCP clients like Cursor and VS Code.

How do I create custom tools?

Implement the UnpluginMcpTool interface with setupMcpServer and registerPlugins methods, then provide the instance via the provideUnpluginMcpTools option in the plugin config.

What is the default server

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