the402 x402 endpoint directory

JSON Object Diff: JSON Object Diff reports added, removed, and changed top-level object keys from bounded caller-suppl

JSON Object Deep Merge: JSON Object Deep Merge deep-merges two bounded JSON objects with right-side precedence from bo

JSON Object Sort Keys: JSON Object Sort Keys returns a top-level JSON object with deterministic key order from bounded

JSON Object Lowercase Keys: JSON Object Lowercase Keys lowercases top-level keys and reports case collisions from boun

JSON Object Rename Keys: JSON Object Rename Keys renames top-level keys using a caller mapping and reports collisions

JSON Object Omit: JSON Object Omit removes selected top-level keys from one JSON object from bounded caller-supplied v

JSON Object Pick: JSON Object Pick keeps selected top-level keys from one JSON object from bounded caller-supplied val

JSON Array Project Keys: JSON Array Project Keys projects selected keys from every object row from bounded caller-supp

JSON Array Filter Keys: JSON Array Filter Keys keeps object rows whose selected key matches caller values from bounded

JSON Array Index By Key: JSON Array Index By Key indexes object rows by a unique top-level key and reports duplicates

JSON Array Group By Key: JSON Array Group By Key groups object rows by a selected top-level key from bounded caller-su

JSON Array Sort By Key: JSON Array Sort By Key sorts object rows by a selected top-level key from bounded caller-suppl

JSON Array Chunk: JSON Array Chunk chunks a JSON array into bounded ordered groups from bounded caller-supplied values

JSON Array Difference: JSON Array Difference returns left-side values absent from the right JSON array from bounded ca

JSON Array Intersection: JSON Array Intersection returns values shared by two JSON arrays in left-side order from boun

JSON Array Dedupe: JSON Array Dedupe removes duplicate JSON array values while preserving first occurrence from bounde

Detect RFC1918 private IPv4 addresses. Call when agents classifying IPs before whois/network calls. Returns is_private

Validate shape of common registry IDs (LEI/WMI/EIN-like). Call when preflight before registry lookups. Returns kind_gu

Normalize a news query string for GDELT-style search. Call when cleaning agent queries before paid news routes. Return

Parse magnitude/place from a USGS-like feature properties object. Call when normalizing already-fetched earthquake JSO

Lookup country name from a static ISO3166-1 alpha-2 table subset. Call when labeling country codes offline. Returns na

Format a fixed UTC offset as ±HH:MM. Call when agents need offset labels without full IANA DB. Returns offset string a

Check if a YYYY-MM-DD is in a static US market holiday set. Call when scheduling around known US market holidays offli

Diff path keys between two OpenAPI path maps. Call when detecting added/removed routes between specs. Returns added, r

Infer column names and sample dtypes from CSV text. Call when quick schema report before loading tables. Returns colum

Compose DNS/TLS/header signal booleans into a surface score. Call when one-shot security surface score from already-co

Check a caller-supplied Base gas price and gas limit against an ETH transaction budget with exact Wei arithmetic. Use

Html Canonical Link Check: Html Canonical Link Check compares document and canonical URLs after deterministic normaliz

Html Meta Refresh Parse: Html Meta Refresh Parse parses bounded meta-refresh delay and target URL from bounded caller-

Sitemap Lastmod Freshness: Sitemap Lastmod Freshness calculates sitemap lastmod age against a caller freshness budget

Sitemap Changefreq Check: Sitemap Changefreq Check classifies a sitemap changefreq token against the defined vocabular

Sitemap Entry Validate: Sitemap Entry Validate checks one sitemap URL entry for required location and bounded metadata

Robots Directive Merge: Robots Directive Merge merges generic and named-agent robots directives with specific preceden

Robots Meta Parse: Robots Meta Parse parses robots meta directives into normalized index and follow decisions from bou

URL Port Policy Check: URL Port Policy Check checks a URL effective port against a caller allowlist from bounded calle

URL Redirect Target Check: URL Redirect Target Check checks a redirect target against allowed schemes and hosts from b

URL Canonical Compare: URL Canonical Compare compares URLs after scheme, host, port, path, and query normalization fro

URL Tracking Param Strip: URL Tracking Param Strip removes caller-selected tracking parameters while preserving the re

URL Query Param Diff: URL Query Param Diff finds added, removed, and changed query parameters between URLs from bounde

Email DMARC Alignment Check: Email DMARC Alignment Check combines caller-supplied SPF and DKIM alignment outcomes for

Email SPF Alignment Check: Email SPF Alignment Check checks relaxed or strict SPF domain alignment from bounded caller

Email MX Readiness Check: Email MX Readiness Check checks caller-supplied MX records for usable non-null exchanges fro

DNS Https Record Parse: DNS Https Record Parse parses HTTPS service priority, target, and bounded service parameters f

DNS TLSA Record Shape Check: DNS TLSA Record Shape Check checks TLSA usage, selector, matching type, and certificate d

DNS DS Record Shape Check: DNS DS Record Shape Check checks DS key tag, algorithm, digest type, and hex digest shape f

DNS SOA Serial Compare: DNS SOA Serial Compare compares SOA serials with 32-bit wraparound ordering from bounded calle

DNS SRV Record Parse: DNS SRV Record Parse normalizes SRV priority, weight, port, and target fields from bounded calle

DNS Caa Policy Check: DNS Caa Policy Check checks whether a certificate authority identifier is allowed by CAA records

DNS DKIM Selector Check: DNS DKIM Selector Check checks selector and signing-domain label shapes for a DKIM lookup fro

DNS DMARC Policy Parse: DNS DMARC Policy Parse parses DMARC policy, percentage, alignment, and report tags from bounde