Handler MCP Server
Next.js and Nuxt API routes for Model Context Protocol communication.
Data last scanned today · Reviewed today
Overview
This adapter enables developers to build Model Context Protocol (MCP) servers within Next.js and Nuxt applications. It provides a structured way to register tools and handle communication, supporting both Streamable HTTP and Server-Sent Events (SSE) transports. The package simplifies the integration process by allowing developers to expose MCP endpoints directly through existing web framework routes. It also offers optional Redis support for SSE transport resumability, making it suitable for persistent AI-model connections within a web infrastructure.
Our verdict
With a security score of 34/100, this server is currently classified as high-risk. This rating reflects the fact that it is a community-maintained project rather than an official vendor release, and the absence of an editorial review for its authentication methods or security protocols. Users should exercise caution, particularly regarding the lack of a verified license in some metadata, and should ensure they are using the recommended version of the MCP SDK to avoid known vulnerabilities.
- Supports Next.js and Nuxt framework integration
- Provides optional Redis support for SSE transport
- Includes full TypeScript type definitions
- Contains only three direct dependencies
- Community-maintained without official vendor oversight
- Security score of 34/100 indicates high risk
- Authentication and read-only modes remain unreviewed
Setup
{
"mcpServers": {
"mcp-handler": {
"args": [
"-y",
"mcp-handler"
],
"command": "npx"
}
}
}Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop. Some servers require API keys or tokens as environment variables — check the project's README and add an "env" object if needed.
- No read-only mode — running this grants full read/write access.
- No built-in authentication — anyone with access to this config can invoke every tool it exposes.
Tools
| Tool | Description | Risk |
|---|---|---|
| roll_dice | Roll a dice with a specified number of sides. | low |
Compatibility
| Client | Local | Docker | Remote | Read-only |
|---|---|---|---|---|
| ChatGPT | ||||
| Claude Desktop | ||||
| Cursor | ||||
| VS Code | ||||
| Windsurf |
Frequently asked questions
›Which frameworks and runtime versions are supported?
This server requires Next.js 13+ or Nuxt 3+ and Node.js 18+.
›Are there specific security requirements for the MCP SDK?
You must use @modelcontextprotocol/sdk version 1.26.0 or later to avoid a known security vulnerability in earlier versions.
›Do I need Redis to use this server?
Redis is optional and is only required if you want to enable resumability for the Server-Sent Events (SSE) transport.
›How can I connect an stdio-only client to this HTTP-based server?
You can use the mcp-remote package to bridge the connection by executing 'npx -y mcp-remote' followed by the server's URL.
›Are there built-in configuration options for logging?
Yes, you can enable verbose logging by setting the verboseLogs property to true within the handler configuration object.
Alternatives
Changelog
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