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HTTP Headers & Security Check

GET /v1/url/headers1 credit / requestcache 10 min

The HTTP response headers of any URL with the full redirect chain (status and timing of every hop), compression, caching and CDN details, and a security-headers grade (HSTS, CSP, clickjacking, MIME sniffing, Referrer-Policy, Permissions-Policy, COOP/CORP) with a 0-100 score, an A-F grade and plain-English findings. Responses with HTTP 401/403/429 or 5xx are returned but not charged.

Query parameters

url
string · required
Public http(s) URL to request.
max_age
integer
Accept a cached answer up to this many seconds old, billed at 50%.

Response data fields

    Example

    curl "https://api.gridlode.com/v1/url/headers?url=https%3A%2F%2Fexample.com%2F" \
  -H "Authorization: Bearer $GRIDLODE_KEY"

    Try it without code on the HTTP Headers & Security Check API page.