API Playground
Test verified public APIs in your browser via a security-hardened proxy — only 2,603 allowlisted APIs can be reached. Built for single-endpoint APIs and large surfaces like Plaid or Slack.
Endpoints
2
Lookup
Request
proxy validates path
www.smarty.com· SSRF-safe proxyApplied to this request only — never stored, never sent anywhere but the API you're calling.
query · required — Authentication ID for the account.
query · required — Authentication token (secret) for the account.
query — The city name (max 64 characters).
query — State name or two‑letter abbreviation (max 32 characters).
query — The ZIP Code (max 16 characters).
query — A unique identifier for the address used in your application; passed through to the output.
Response
Send a request to see the real response here — status, timing, and body.
The playground routes through a security-hardened proxy. Only allowlisted hosts are reachable. Try US ZipCode to start.