Firecrawl MCP Server

Instructions

{
  "name": "firecrawl_deep_research",
  "arguments": {
    "query": "What are the environmental impacts of electric vehicles compared to gasoline vehicles?",
    "maxDepth": 3,
    "timeLimit": 120,
    "maxUrls": 50
  }
}

Implementation Reference

• src/index.ts:1296-1348 (handler)

  The handler for the 'firecrawl_deep_research' tool in the request-handling switch statement.

  case 'firecrawl_deep_research': {
    if (!args || typeof args !== 'object' || !('query' in args)) {
      throw new Error('Invalid arguments for firecrawl_deep_research');
    }
  
    try {
      const researchStartTime = Date.now();
      safeLog('info', `Starting deep research for query: ${args.query}`);
  
      const response = await client.deepResearch(
        args.query as string,
        {
          maxDepth: args.maxDepth as number,
          timeLimit: args.timeLimit as number,
          maxUrls: args.maxUrls as number,
          // @ts-expect-error Extended API options including origin
          origin: 'mcp-server',
        },
        // Activity callback
        (activity) => {
          safeLog(
            'info',
            `Research activity: ${activity.message} (Depth: ${activity.depth})`
          );
        },
        // Source callback
        (source) => {
          safeLog(
            'info',
            `Research source found: ${source.url}${source.title ? ` - ${source.title}` : ''}`
          );
        }
      );
  
      // Log performance metrics
      safeLog(
        'info',
        `Deep research completed in ${Date.now() - researchStartTime}ms`
      );
  
      if (!response.success) {
        throw new Error(response.error || 'Deep research failed');
      }
  
      // Format the results
      const formattedResponse = {
        finalAnalysis: response.data.finalAnalysis,
        activities: response.data.activities,
        sources: response.data.sources,
      };
  
      return {
        content: [

• src/index.ts:589-616 (registration)

  Definition of the 'firecrawl_deep_research' tool metadata and schema documentation.

  const DEEP_RESEARCH_TOOL: Tool = {
    name: 'firecrawl_deep_research',
    description: `
  Conduct deep web research on a query using intelligent crawling, search, and LLM analysis.
  
  **Best for:** Complex research questions requiring multiple sources, in-depth analysis.
  **Not recommended for:** Simple questions that can be answered with a single search; when you need very specific information from a known page (use scrape); when you need results quickly (deep research can take time).
  **Arguments:**
  - query (string, required): The research question or topic to explore.
  - maxDepth (number, optional): Maximum recursive depth for crawling/search (default: 3).
  - timeLimit (number, optional): Time limit in seconds for the research session (default: 120).
  - maxUrls (number, optional): Maximum number of URLs to analyze (default: 50).
  **Prompt Example:** "Research the environmental impact of electric vehicles versus gasoline vehicles."
  **Usage Example:**
  \`\`\`json
  {
    "name": "firecrawl_deep_research",
    "arguments": {
      "query": "What are the environmental impacts of electric vehicles compared to gasoline vehicles?",
      "maxDepth": 3,
      "timeLimit": 120,
      "maxUrls": 50
    }
  }
  \`\`\`
  **Returns:** Final analysis generated by an LLM based on research. (data.finalAnalysis); may also include structured activities and sources used in the research process.
  `,
    inputSchema: {