SSID API

Identify the manufacturer behind any MAC address — and know when it's a randomized (private) address instead of a real prefix. No signup for the free tier.

Try it

curl "https://ssid.ai/api/v1/lookup?mac=F4:F5:E8:11:22:33"

{
  "mac": "F4:F5:E8:11:22:33",
  "oui": "F4F5E8",
  "kind": "universal",
  "randomized": false,
  "vendor": { "organization": "Google, Inc.", "address": "..." },
  "deviceType": null,
  "confidence": 1,
  "source": { "name": "IEEE OUI registry", "url": "https://standards-oui.ieee.org/" }
}

Auth

Pass an API key to raise limits: Authorization: Bearer ssid_… (or x-api-key). Every response carries X-RateLimit-* headers.

Tiers

For agents

• MCP: a lookup_mac tool over stdio — add SSID to any MCP-capable agent host.
• x402: GET /api/x402/lookup — machine-payable (402 → pay → data).