Country profile: name, ISO codes, capital and its coordinates, region, income level, phone prefix, time zones and latest population and GDP per capita. World Bank and libphonenumber data.

Generate cryptographically secure unique IDs: UUID v4, time-sortable UUID v7, ULID, NanoID, hex, base58 or prefixed tokens (e.g. ord_...), up to 1000 per call.

Information about an autonomous system: holder, whether it announces routes, registry block, number of IPv4 and IPv6 prefixes announced, approximate IPv4 addresses and a sample of prefixes. RIPEstat data.

NEAR account (name.near or 64-hex implicit): available and staked NEAR, storage used, whether it has a contract deployed and USD value.

Search scientific papers on arXiv (AI, physics, maths, economics...): title, authors, abstract, categories, dates and PDF link; by relevance or newest, with category filter (cs.AI, cs.CR, q-fin...).

Detect the language of a text without AI (55 languages, statistical langdetect model) with probability and alternatives. Fast and cheap for routing messages or choosing a translation.

Hedera account (0.0.x or EVM address): HBAR balance, associated HTS tokens with balances, staking node, pending reward, creation date and USD value.

Average household natural gas price (20-200 GJ/year band) in EUR/kWh by European country, with or without taxes: ranking or half-yearly evolution of one country. Official Eurostat data.

Reference data for a blockchain by its chainId: name, gas/native token, block explorers, number of public RPCs and website. Utility for multi-chain agents. Live from chainid.network (ethereum-lists, open data).

Generate a QR code as SVG or PNG (base64 and data URI) for any text, URL, payment link, Wi-Fi or vCard, with error-correction level, scale and colors.

Trusted UTC time (NTP-synced server clock) with millisecond Unix timestamps, ISO week and the latest Ethereum and Base block times as independent references. For timestamping and clock checks.

Distance between two coordinates (Vincenty geodesic on WGS84 plus great-circle), in km, miles and nautical miles, initial bearing and compass direction, midpoint and estimated time on foot, by car and by plane.

Moon phase on a date: name, illuminated percentage, lunar age and the next new and full moon dates. Local astronomical calculation.

Official public holidays of 150+ countries and their regions (Spanish autonomous communities, US states, German Länder...) for a year, whether a given date is a holiday, and the next holiday.

Read a raw storage slot of a contract (decimal, hex or the standard EIP-1967 implementation/admin/beacon slots), as integer and as address, at any block. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

Confirmed and pending nonce of a wallet, next nonce to use and transactions waiting in the mempool. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

Network status: chainId, block height and age, gas price, base fee, suggested priority fee, node client version and sync status. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

Whether an address is a contract or a wallet: bytecode size and hash, EIP-7702 delegation and EIP-1167 minimal proxy detection. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

Block header by number, hex or tag (latest, safe, finalized): hash, parent, time, producer, gas used and limit, base fee, transaction count and optionally the tx hashes. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

Run a read-only eth_call with pre-encoded hex calldata and get the raw result split into 32-byte words, or the revert reason. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.