OSINT MCP Server

Implementation Reference

• src/tools/network-adv.ts:13-20 (handler)

  The lookupAsn function in the NetworkAdvClient class performs the ASN lookup by fetching data from the bgpview.io API.

  async lookupAsn(asn: string): Promise<any> {
    try {
      const response = await fetch(`https://api.bgpview.io/asn/${asn}`);
      return await response.json();
    } catch (error) {
      throw new McpError(ErrorCode.InternalError, `ASN Lookup error: ${(error as Error).message}`);
    }
  }

• src/index.ts:675-684 (registration)

  The 'asn_lookup' tool is registered in src/index.ts, which calls the lookupAsn method of the NetworkAdvClient.

  server.tool(
    "asn_lookup",
    { asn: z.string().describe("ASN string (e.g., '15169') to lookup") },
    async ({ asn }) => {
      const result = await netAdvClient.lookupAsn(asn);
      return {
        content: [{ type: "text", text: JSON.stringify(result, null, 2) }],
      };
    }
  );