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Web Url-preflight

Check whether a public URL responds now, then return origin status, final URL, response headers, cache validators and up to 5 redirects. Uses HEAD; GET only on 405/501. Limits: 8s, 2 MiB. Origin 4xx/5xx are observations; no JavaScript, login or availability guarantee.

Use when

• is this URL reachable
• check website response
• what redirects does this URL use

Input example

Canonical paid endpoint

OpenAPI contract →