OSINT MCP Server

Implementation Reference

• src/tools/robtex.ts:12-34 (handler)

  The implementation of the dns_lookup_passive tool's underlying logic, which calls the Robtex API to fetch passive DNS records.

  async getDns(domain: string): Promise<DnsResult> {
    try {
      const data = await this.fetch<any>(`pdns/forward/${domain}`, {
        method: "GET",
      });
  
      const records = data.map((r: any) => ({
        type: r.rrtype,
        value: r.rrdata,
      }));
  
      return DnsResultSchema.parse({
        domain,
        records,
      });
    } catch (error) {
      if (error instanceof McpError) throw error;
      throw new McpError(
        ErrorCode.InternalError,
        `Robtex DNS error: ${(error as Error).message}`
      );
    }
  }

• src/index.ts:134-143 (registration)

  Registration of the dns_lookup_passive tool in the MCP server.

  server.tool(
    "dns_lookup_passive",
    { domain: z.string().describe("Domain name to lookup passive DNS records from Robtex") },
    async ({ domain }) => {
      const result = await robtexClient.getDns(domain);
      return {
        content: [{ type: "text", text: JSON.stringify(result, null, 2) }],
      };
    }
  );