8 Services from lab.fastx402.tools

Checks whether a specific date is a public holiday in a given country, returning holiday name, type, and metadata

Computes IPv4 CIDR block details (network, broadcast, netmask, usable hosts, etc.) and optionally checks whether a given IP address falls within the block

Returns current Bitcoin mempool fee rates and mempool statistics for a given network (mainnet, testnet3, or testnet4)

Filters a list of semantic versions against a semver range constraint, returning all matching versions plus the highest match

Normalizes and parses an RFC 3339 / ISO-8601 timestamp into UTC, date, time, Unix seconds/milliseconds, and UTC offset components.

Converts token amounts between human-readable decimal and blockchain atomic (integer) units given a token's decimal precision

Computes the Keccak-256 hash of a given hex byte string or UTF-8 text, paid per call in USDC over x402

Converts a human-readable data size string (e.g. '1.5 MiB', '800 KB') into its exact byte count plus normalized SI and IEC representations