@mkusaka/mcp-server-o4-search/build/index.js

mcp server for web search by OpenAI o4-mini model

#!/usr/bin/env node
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import OpenAI from "openai";
import { z } from "zod";
// Create server instance
const server = new McpServer({
    name: "o4-search-mcp",
    version: "0.0.1",
}, {
    instructions: `This extension provides advanced web search capabilities powered by OpenAI's o4-mini model. It's designed to help find the latest information, troubleshoot errors, and answer complex questions with comprehensive web research.

Capabilities:
1. Advanced natural language web search with deep reasoning capabilities.
2. Real-time information retrieval from the web for current events and recent data.
3. Comprehensive troubleshooting support for technical issues and error messages.
4. Context-aware searching with configurable search context size and reasoning effort.

When to use the o4-search tool:
- When you need up-to-date information beyond your knowledge cutoff
- For troubleshooting specific errors or technical issues
- When comprehensive web research is needed for accurate answers
- For fact-checking or finding latest developments on a topic

Configuration options:
- SEARCH_CONTEXT_SIZE: Controls the breadth of search results (low/medium/high)
- REASONING_EFFORT: Controls the depth of analysis (low/medium/high)

The tool accepts natural language queries in English and provides detailed, well-researched responses based on current web information.`
});
// Initialize OpenAI client
const openai = new OpenAI({
    apiKey: process.env.OPENAI_API_KEY,
});
// Configuration from environment variables
const searchContextSize = (process.env.SEARCH_CONTEXT_SIZE || 'high');
const reasoningEffort = (process.env.REASONING_EFFORT || 'high');
// Define the o3-search tool
server.tool("o4-search", `An AI agent with advanced web search capabilities. Useful for finding latest information and troubleshooting errors. Supports natural language queries.`, { input: z.string().describe('Ask questions, search for information, or consult about complex problems in English.'), }, async ({ input }) => {
    try {
        const response = await openai.responses.create({
            model: 'o4-mini',
            input,
            tools: [{ type: 'web_search_preview', search_context_size: searchContextSize }],
            tool_choice: 'auto',
            parallel_tool_calls: true,
            reasoning: { effort: reasoningEffort },
        });
        return {
            content: [
                {
                    type: "text",
                    text: response.output_text || "No response text available.",
                },
            ],
        };
    }
    catch (error) {
        console.error("Error calling OpenAI API:", error);
        return {
            content: [
                {
                    type: "text",
                    text: `Error: ${error instanceof Error ? error.message : "Unknown error occurred"}`,
                },
            ],
        };
    }
});
async function main() {
    const transport = new StdioServerTransport();
    await server.connect(transport);
    console.log("MCP Server running on stdio");
}
main().catch((error) => {
    console.error("Fatal error in main():", error);
    process.exit(1);
});
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