tavily-mcp

Instructions

Implementation Reference

• src/index.ts:513-528 (handler)

  Core handler function that implements the tavily-map tool by making a POST request to the Tavily API's map endpoint with user parameters and handling errors.

  async map(params: any): Promise<TavilyMapResponse> {
    try {
      const response = await this.axiosInstance.post(this.baseURLs.map, {
        ...params,
        api_key: API_KEY
      });
      return response.data;
    } catch (error: any) {
      if (error.response?.status === 401) {
        throw new Error('Invalid API key');
      } else if (error.response?.status === 429) {
        throw new Error('Usage limit exceeded');
      }
      throw error;
    }
  }

• src/index.ts:285-346 (registration)

  Registration of the tavily-map tool in the ListToolsRequestSchema handler, defining its name, description, and input schema for validation.

  {
    name: "tavily-map",
    description: "A powerful web mapping tool that creates a structured map of website URLs, allowing you to discover and analyze site structure, content organization, and navigation paths. Perfect for site audits, content discovery, and understanding website architecture.",
    inputSchema: {
      type: "object",
      properties: {
        url: { 
          type: "string", 
          description: "The root URL to begin the mapping"
        },
        max_depth: {
          type: "integer",
          description: "Max depth of the mapping. Defines how far from the base URL the crawler can explore",
          default: 1,
          minimum: 1
        },
        max_breadth: {
          type: "integer",
          description: "Max number of links to follow per level of the tree (i.e., per page)",
          default: 20,
          minimum: 1
        },
        limit: {
          type: "integer",
          description: "Total number of links the crawler will process before stopping",
          default: 50,
          minimum: 1
        },
        instructions: {
          type: "string",
          description: "Natural language instructions for the crawler"
        },
        select_paths: {
          type: "array",
          items: { type: "string" },
          description: "Regex patterns to select only URLs with specific path patterns (e.g., /docs/.*, /api/v1.*)",
          default: []
        },
        select_domains: {
          type: "array",
          items: { type: "string" },
          description: "Regex patterns to select crawling to specific domains or subdomains (e.g., ^docs\\.example\\.com$)",
          default: []
        },
        allow_external: {
          type: "boolean",
          description: "Whether to allow following links that go to external domains",
          default: false
        },
        categories: {
          type: "array",
          items: { 
            type: "string",
            enum: ["Careers", "Blog", "Documentation", "About", "Pricing", "Community", "Developers", "Contact", "Media"]
          },
          description: "Filter URLs using predefined categories like documentation, blog, api, etc",
          default: []
        }
      },
      required: ["url"]
    }
  },

• src/index.ts:401-418 (handler)

  Dispatch case in the CallToolRequestSchema handler that invokes the tavily-map implementation with arguments and formats the response.

  case "tavily-map":
    const mapResponse = await this.map({
      url: args.url,
      max_depth: args.max_depth,
      max_breadth: args.max_breadth,
      limit: args.limit,
      instructions: args.instructions,
      select_paths: Array.isArray(args.select_paths) ? args.select_paths : [],
      select_domains: Array.isArray(args.select_domains) ? args.select_domains : [],
      allow_external: args.allow_external,
      categories: Array.isArray(args.categories) ? args.categories : []
    });
    return {
      content: [{
        type: "text",
        text: formatMapResults(mapResponse)
      }]
    };

• src/index.ts:590-602 (helper)

  Supporting helper function that formats the TavilyMapResponse into a readable text output for the tool response.

  function formatMapResults(response: TavilyMapResponse): string {
    const output: string[] = [];
    
    output.push(`Site Map Results:`);
    output.push(`Base URL: ${response.base_url}`);
    
    output.push('\nMapped Pages:');
    response.results.forEach((page, index) => {
      output.push(`\n[${index + 1}] URL: ${page}`);
    });
    
    return output.join('\n');
  }

• src/index.ts:49-53 (schema)

  TypeScript interface defining the expected response schema from the Tavily map API.

  interface TavilyMapResponse {
    base_url: string;
    results: string[];
    response_time: number;
  }