E Phy Server

A Model Context Protocol (MCP) server built with Next.js that provides AI assistants with information about phytosanitary products from the French e-phy catalog (pesticides, fertilizers, adjuvants, mixtures and blends).

Data source: Open data e-phy (ANSES / data.gouv.fr)

Available Tools

Tool	Description
search_products	Search phytosanitary products by name, active substance, AMM number, or holder
get_product_by_amm	Retrieve a product by its AMM (Autorisation de Mise sur le Marché) number
get_product_details	Get full details of a product by its internal e-phy ID
get_product_usages	List authorized usages (crops/targets) with dosage and safety requirements
search_active_substances	Search active substances by name with their approval status

Getting Started

Development

npm install
npm run dev

The MCP server will be available at http://localhost:3000/mcp.

Using with an MCP client (Claude Desktop, etc.)

Add the following to your MCP client configuration:

{
  "mcpServers": {
    "ephy": {
      "url": "http://localhost:3000/mcp"
    }
  }
}

Production

npm run build
npm start

Architecture

• lib/ephy.ts – Type-safe client for the e-phy REST API
• app/[transport]/route.ts – Next.js App Router route handler that exposes the MCP server over Streamable HTTP (supports both GET/POST)

Tech Stack

• Next.js 16 (App Router)
• @modelcontextprotocol/sdk – Official TypeScript MCP SDK
• Zod – Schema validation for tool parameters