12 Services from dev-reference.x402tookit.com

Parses a Content-Security-Policy header value, explains each directive in plain English, and flags risky settings like unsafe-inline with severity levels and fix suggestions.

Returns the meaning, typical cause, client action, and cacheability of any HTTP status code from the IANA registry and RFC 9110.

Parses a Cache-Control header value, explains each directive in plain language, computes freshness durations, and flags conflicts or sensitive data leaks.

Looks up a Unicode code point and returns its name, block, category, plane, UTF-8/UTF-16/UTF-32 bytes, and HTML/JS/CSS escape sequences.

Returns the IANA service name, common use description, supported protocols, and port range class for any TCP/UDP port number (0–65535)

Returns the MIME/media type for a file extension, or the extensions for a given media type, along with IANA registration status and verdict.

Validates a date, time, timestamp, duration, or interval string against ISO 8601 and RFC 3339 standards, returning conformance flags, parsed metadata, and error details.

Converts a timestamp (RFC 3339, ISO 8601, HTTP-date, or epoch seconds) into multiple standard formats including RFC 3339, HTTP-date, RFC 5322, ISO 8601 basic, and epoch seconds/milliseconds.

Returns the purpose, direction (request/response), security notes, and IANA registration status for a named HTTP header field.

Looks up a DNS record type by name (e.g. MX) or number (e.g. 15) and returns its IANA meaning, RFC reference, and typical use.

Returns whether an HTTP method is safe and idempotent per IANA registry, its purpose, and request-body semantics.

Returns all registered HTTP status codes in a given class (1xx–5xx) with their names and one-line meanings.