108 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
HTTP 508 Loop Detected: what it means (WebDAV: infinite loop), what a client should do (fix bindings), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise o...
HTTP 510 Not Extended: what it means (extension required), what a client should do (add extension), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and common causes. Precise one-...
HTTP 511 Network Authentication Required: what it means (captive portal), what a client should do (log in to the network), the class it belongs to, whether it is retryable and idempotency-safe, the defining RFC, and comm...
Dart/Flutter package http: latest version, description, license, repository and download/publish data from the pub-dev registry API. Pin, audit or compare http in one call, no token. $0.01 per call.
Extract page metadata from a public URL: title, meta description, canonical, language, OpenGraph/Twitter card tags, favicon, headings (h1-h3) and up to 200 absolute links.
HTTP endpoint health audit for one URL: status and redirect chain, latency p50/p95 over repeated samples, TLS certificate expiry and issuer, the response headers that matter, and a list of detected anomalies (missing HST...
DNS and email-authentication audit for one domain: A/AAAA presence, NS count and whether the nameservers share a /24, MX (including a null MX), SPF (missing, multiple, +all, ~all, ?all), DMARC (missing, p=none, no rua, p...
HTTP endpoint health audit for one URL: status and redirect chain, latency p50/p95 over repeated samples, TLS certificate expiry and issuer, the response headers that matter, and a list of detected anomalies (missing HST...
Trace the full HTTP redirect chain for a URL: every hop with status code and latency, the final URL, whether it ends on HTTPS, and total hops. Link checking, affiliate/tracking link inspection, HTTP-to-HTTPS migration ch...
HTTP endpoint health checker: follows the redirect chain of any URL, reports per-hop status codes, total timing, final URL and response headers. Query params: url (required), maxHops (optional, default 10).
HTTP status code reference: give a class like 4xx to list every code in it with its reason phrase, a specific code for its meaning and typical use, or a word (e.g. 'teapot', 'redirect', 'auth') to search. Covers all IANA...
HTTP status code explained: the standard reason phrase, what it means and what a client should do, for every common code, or the full list for a class like '4xx'. $0.01 per lookup.