OneSearch MCP Server

import * as DDG from 'duck-duck-scrape';
import asyncRetry from 'async-retry';
import type { SearchOptions } from 'duck-duck-scrape';
import { ISearchRequestOptions, ISearchResponse } from '../interface.js';


export async function duckDuckGoSearch(options: Omit<ISearchRequestOptions, 'safeSearch'> & SearchOptions): Promise<ISearchResponse> {
  try {
    const { query, timeout = 10000, safeSearch = DDG.SafeSearchType.OFF, retry = { retries: 3 }, ...searchOptions } = options;
  
    const res = await asyncRetry(
      () => {
        return DDG.search(query, {
          ...searchOptions,
          safeSearch,
        }, {
          // needle options
          response_timeout: timeout,
        });
      },
      retry,
    );

    const results = res ? {
      noResults: res.noResults,
      vqd: res.vqd,
      results: res.results,
    } : {
      noResults: true,
      vqd: '',
      results: [],
    };

    return {
      results: results.results.map((result) => ({
        title: result.title,
        snippet: result.description,
        url: result.url,
        source: result.hostname,
        image: null,
        video: null,
        engine: 'duckduckgo',
      })),
      success: true,
    };
  } catch (error) {
    const msg = error instanceof Error ? error.message : 'DuckDuckGo search error.';
    process.stdout.write(msg);
    throw error;
  }
}