#!/usr/bin/env node
import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import {
CallToolRequestSchema,
ListToolsRequestSchema,
} from "@modelcontextprotocol/sdk/types.js";
import { RestClient, RestToolFactory } from "@mcp/rest-utils";
import { ensemblTools } from "./tools.js";
const ENSEMBL_BASE_URL = "https://rest.ensembl.org";
// Create REST client
const client = new RestClient({
baseUrl: ENSEMBL_BASE_URL,
defaultHeaders: {
"Content-Type": "application/json",
},
timeout: 30000,
retries: 3,
});
// Create tool factory
const toolFactory = new RestToolFactory(client);
// Convert tool configs to MCP tools
const tools = ensemblTools.map((config) => toolFactory.createTool(config));
// Server implementation
const server = new Server(
{
name: "ensembl-mcp-server",
version: "1.0.0",
},
{
capabilities: {
tools: {},
},
}
);
// List available tools
server.setRequestHandler(ListToolsRequestSchema, async () => {
return { tools };
});
// Handle tool execution
server.setRequestHandler(CallToolRequestSchema, async (request) => {
const { name, arguments: args } = request.params;
// Find the tool configuration
const toolConfig = ensemblTools.find((tool) => tool.name === name);
if (!toolConfig) {
return {
content: [
{
type: "text",
text: `Error: Unknown tool: ${name}`,
},
],
isError: true,
};
}
// Execute the tool using the factory
return toolFactory.executeTool(toolConfig, args || {});
});
// Start the server
async function main() {
const transport = new StdioServerTransport();
await server.connect(transport);
console.error("Ensembl MCP Server running on stdio");
}
main().catch((error) => {
console.error("Fatal error in main():", error);
process.exit(1);
});
