Napi MCP Server

The `postinstall` script helper for handling native bindings in legacy `npm` versions

Local serverstdio

What is the Napi MCP server?

If you already use Napi, the napi mcp server is the piece that lets your assistant work with it directly. The postinstall script helper for handling native bindings in legacy npm versions.

What the server does

The postinstall script helper for handling native bindings in legacy npm versions, this is a reimplementation of the [node-install][node-install] functionality from [esbuild][esbuild] for [napi-rs][napi-rs] ecosystem packages like [rollup][rollup], [@swc/core][swc-core] and [unrs-resolver][unrs-resolver].

Installation

The server ships on npm as napi-postinstall, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Types — export declare function checkAndPreparePackage( packageNameOrPackageJson: PackageJson | string, checkVersion?: boolean, ): Promise
  • Example — if (isNpm()) { void checkAndPreparePackage('unrs-resolver' /* */) }
  • Sponsors — The Sponsors tool exposed by this server
  • Backers — The Backers tool exposed by this server

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Napi's toolset — Types, Example, Sponsors and 1 more — is a fair guide to whether it matches your workflow. It is maintained by GitHub Actions; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Napi's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Available tools

ToolWhat it does
Typesexport declare function checkAndPreparePackage( packageNameOrPackageJson: PackageJson | string, checkVersion?: boolean, ): Promise<void>
Exampleif (isNpm()) { void checkAndPreparePackage('unrs-resolver' /* <napi-package-name> */) }
SponsorsThe Sponsors tool exposed by this server.
BackersThe Backers tool exposed by this server.

How to install the Napi MCP server

{
  "mcpServers": {
    "napi": {
      "command": "npx",
      "args": ["-y", "napi-postinstall"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Example prompts to try

  • Use Napi to Types.
  • Use Napi to Example.
  • Use Napi to Sponsors.

Frequently asked questions

It connects Napi to MCP-compatible AI assistants such as Claude and Cursor, exposing 4 tools (Types, Example, Sponsors, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Napi directly.