ZeroEntropy Zerank MCP Server

ZeroEntropy Zerank MCP Server

Provides document reranking capabilities via the ZeroEntropy Zerank API, allowing AI assistants to sort documents by relevance to a user query through the Model Context Protocol.

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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

Installation

npm install

Usage

Standalone Node.js Server

Run the MCP server using stdio transport:

npm start

Or for development with auto-reload:

npm run dev

Cloudflare Workers Deployment

  1. Install Wrangler CLI:
npm install -g wrangler
  1. Login to Cloudflare:
wrangler login
  1. Deploy the worker:
wrangler deploy

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:

{
  "query": "machine learning algorithms",
  "documents": [
    "Neural networks are a type of machine learning model",
    "Cooking recipes for pasta dishes",
    "Supervised learning techniques in AI"
  ],
  "api_key": "your-api-key"
}

Environment

  • Node.js 18.0.0 or higher
  • ZeroEntropy API access

License

MIT

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