the402 x402 endpoint directory

DNS SPF Lookup Budget: DNS SPF Lookup Budget counts DNS-triggering SPF mechanisms against a configured budget from bou

DNS SPF Record Parse: DNS SPF Record Parse parses SPF version, mechanisms, modifiers, and terminal policy from bounded

DNS Txt Chunk Join: DNS Txt Chunk Join joins quoted DNS TXT chunks into the logical record value from bounded caller-s

DNS MX Priority Sort: DNS MX Priority Sort sorts MX exchanges by preference while preserving equal-priority order from

DNS Cname Chain Check: DNS Cname Chain Check checks a caller-supplied CNAME chain for loops and hop budget from bounde

DNS Ttl Budget Check: DNS Ttl Budget Check checks DNS record TTLs against caller minimum and maximum bounds from bound

Server Timing Parse: Server Timing Parse parses bounded Server-Timing metrics and durations from bounded caller-suppli

Connection Header Tokenize: Connection Header Tokenize normalizes hop-by-hop connection option tokens from bounded cal

Transfer Encoding Check: Transfer Encoding Check checks transfer-coding order and whether chunked appears only last fr

HTTP Version Normalize: HTTP Version Normalize normalizes common HTTP protocol version spellings from bounded caller-s

Method Idempotency Classify: Method Idempotency Classify classifies an HTTP method as safe, idempotent, or non-idempot

Status Retry Classify: Status Retry Classify classifies whether a method and status pair is retryable under caller pol

Redirect Chain Check: Redirect Chain Check checks a caller-supplied redirect chain for loops, downgrade, and hop budge

Location Header Resolve: Location Header Resolve resolves a relative Location value against a caller-supplied base URL

Content Range Parse: Content Range Parse parses a Content-Range response and checks total-size consistency from bounde

Range Header Parse: Range Header Parse parses one bounded HTTP byte range into start and end offsets from bounded call

Authorization Scheme Identify: Authorization Scheme Identify identifies an Authorization scheme without exposing or va

Www Authenticate Parse: Www Authenticate Parse parses an authentication challenge scheme and bounded parameters from b

Cookie Path Match: Cookie Path Match evaluates cookie Path matching for a request path from bounded caller-supplied va

Cookie Domain Match: Cookie Domain Match evaluates host-only or Domain cookie matching for a request host from bounded

Cookie Expiry Check: Cookie Expiry Check checks Max-Age or Expires metadata against an allowed lifetime from bounded c

Cookie Security Check: Cookie Security Check checks Secure, HttpOnly, and SameSite attributes against policy from boun

Cookie Set Parse: Cookie Set Parse parses one Set-Cookie value into name, value, and attributes from bounded caller-su

Frame Ancestors Check: Frame Ancestors Check checks whether a CSP frame-ancestors directive contains a required source

X Content Type Options Check: X Content Type Options Check checks whether X-Content-Type-Options is exactly nosniff fr

Referrer Policy Check: Referrer Policy Check classifies a Referrer-Policy value against a caller allowlist from bounde

Permissions Policy Parse: Permissions Policy Parse parses Permissions-Policy feature allowlists into normalized entrie

CSP Source Check: CSP Source Check checks whether a caller-supplied source is present in one CSP directive from bounde

CSP Directive Parse: CSP Directive Parse parses Content-Security-Policy directives into normalized source lists from b

HSTS Policy Check: HSTS Policy Check checks HSTS max-age and subdomain directives against caller policy from bounded c

CORS Preflight Check: CORS Preflight Check checks requested method and headers against a CORS preflight policy from bo

CORS Origin Check: CORS Origin Check compares a request origin with explicit allowed origins from bounded caller-suppl

Origin Header Normalize: Origin Header Normalize normalizes scheme, host, and effective port from an Origin value from

X Forwarded For Chain: X Forwarded For Chain normalizes a proxy chain without deciding whether an address is trusted f

Forwarded Header Parse: Forwarded Header Parse parses bounded standardized Forwarded header elements from bounded call

Link Header Parse: Link Header Parse parses bounded Link header targets and relation parameters from bounded caller-su

Rate Limit Window Check: Rate Limit Window Check checks remaining quota against reset timing and requested calls from

Retry After Parse: Retry After Parse normalizes Retry-After seconds or an HTTP-date epoch into a delay from bounded ca

Content Disposition Parse: Content Disposition Parse extracts disposition type, filename, and safe parameters from bou

Content Length Check: Content Length Check compares declared Content-Length with an observed byte count from bounded c

Content Type Match: Content Type Match checks a concrete Content-Type against an expected media range from bounded cal

Content Type Parse: Content Type Parse splits a Content-Type value into media type and parameters from bounded caller-

Accept Encoding Rank: Accept Encoding Rank ranks supported content codings against Accept-Encoding weights from bounde

Accept Language Rank: Accept Language Rank ranks offered languages against weighted Accept-Language ranges from bounde

Accept Header Rank: Accept Header Rank ranks offered media types against weighted Accept ranges from bounded caller-su

Allow Header Normalize: Allow Header Normalize normalizes and sorts methods advertised by an Allow header from bounded

Vary Header Normalize: Vary Header Normalize normalizes and deduplicates Vary header field names from bounded caller-s

Last Modified Compare: Last Modified Compare orders two Last-Modified instants and reports their delta from bounded ca

Etag Comparison Mode: Etag Comparison Mode evaluates strong or weak comparison between two entity tags from bounded ca

Etag Parse: Etag Parse separates weak and strong entity-tag semantics from an ETag value from bounded caller-supplied