ZeroEntropy Zerank MCP Server

A Model Context Protocol (MCP) server for document reranking using the ZeroEntropy Zerank API, now implemented in Node.js.

Features

• Document reranking using the ZeroEntropy Zerank API

• Input validation with Zod schemas

• Support for both standalone Node.js server and Cloudflare Workers deployment

• MCP protocol compliance for integration with AI assistants

Related MCP server: RAG Documentation MCP Server

Installation

Usage

Standalone Node.js Server

Run the MCP server using stdio transport:

Or for development with auto-reload:

Cloudflare Workers Deployment

1. Install Wrangler CLI:

2. Login to Cloudflare:

3. Deploy the worker:

API

The server provides one tool:

get_reranking

Reranks a list of documents based on relevance to a query.

Parameters:

• query (string): The search query (1-10000 characters)

• documents (array): Array of documents to rerank (1-1000 items)

• api_key (string): ZeroEntropy API key

Returns:

• results (array): Array of reranked results with index and relevance_score

Example:

Environment

• Node.js 18.0.0 or higher

• ZeroEntropy API access

License

MIT