Vextorium

Detect whether a contract is an upgradeable proxy (EIP-1967 transparent/UUPS, beacon, ZeppelinOS, EIP-1167 minimal) and return implementation, admin and beacon. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.

Live status of Bitcoin, Solana and 12 EVM chains (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic, Unichain): latest block, seconds since last block, gas and whether each network is ok, slow or halted.

Python package profile from PyPI: latest version and date, summary, license, required Python, author, links, dependencies, recent downloads and yanked flag.

Parse a site's robots.txt: whether a user-agent may crawl a path, which AI crawlers (GPTBot, ClaudeBot, Google-Extended, PerplexityBot, CCBot...) are blocked, and declared sitemaps. Check before your agent scrapes.

Keyless public RPC endpoints (HTTPS and WebSocket) of any EVM chain by name or chainId, with block explorers, native currency and website. Lets an agent connect to any chain.

Check whether a person or entity is on the UN Security Council Consolidated Sanctions List (Al-Qaida, ISIL, Taliban, DPRK, Iran, Libya, Sudan, Yemen...) with fuzzy matching of names and aliases. Complements sanciones-buscar (EU and OFAC).

Minimum SOL for a Solana account of a given size to be rent-exempt (165 bytes = token account, 82 = mint, 0 = wallet), with common reference sizes.

Verify a Sign-In with Ethereum (EIP-4361) login: parses domain, address, chain, nonce and dates, checks the signature and expiry, and optionally the expected domain and nonce. Authenticate users or agents by wallet.

Sunrise, sunset, solar noon, day length and civil, nautical and astronomical twilight for coordinates and a date, in local time (zone detected from coordinates). Local astronomical calculation; handles polar night and midnight sun.

Current finalized Solana slot and block height, latest block time and a recent blockhash with its last valid height, ready to build transactions.

Solana network status: current epoch and progress with estimated end time, slot and block height, recent TPS (total and non-vote), slot time, inflation rate, total and circulating SOL supply and node version.

Stellar account: XLM and every asset balance (USDC, EURC...) with issuer, signers and thresholds, subentries and USD value.

Subdomains of a domain found in public Certificate Transparency logs (every TLS certificate issued): names, wildcard count and certificate dates. For asset inventory, audits and OSINT.

IPv4/IPv6 subnet calculator: network, mask, wildcard, broadcast, first/last host, usable hosts, address type (private, public, loopback...) and whether a given IP belongs to the subnet.

Sui wallet balances: SUI and every other token with amount, decimals and USD value where priced, plus the wallet total.

Recent earthquakes worldwide from the USGS: magnitude, place, depth, time, PAGER damage alert, tsunami flag and felt reports; filter by minimum magnitude, period (hour to month) and distance to coordinates.

Tezos account (tz1/tz2/tz3/KT1): XTZ balance, baker, staked amount, FA tokens, transaction count, first and last activity and USD value.

US dollar reference rates from the Federal Reserve Bank of New York: effective fed funds rate (EFFR) with the Fed's target range, SOFR with 30/90/180-day averages, OBFR, TGCR and BGCR, with volumes and percentiles.

Resolve a .ton domain (TON DNS) to its wallet address, or find the .ton domain of a TON address.

Split long text into overlapping chunks for RAG and embeddings, by characters, words or estimated tokens, keeping sentences or paragraphs whole, with each chunk's position and size.

Balance of a Litecoin, Dogecoin or Dash address (detected from the prefix if not given): confirmed and pending balance, total received and sent, transaction count and USD value.

Decode EVM calldata (transaction input) with the function signature or, if omitted, by looking up the selector on 4byte; or decode return data with its output types (e.g. uint256,address).

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.

Encode a contract function call (calldata) from its signature and arguments, e.g. transfer(address,uint256) with [to, amount]: selector and hex data ready to sign or simulate.

Classify up to 50 EVM addresses at once: regular wallet (EOA), EIP-7702 delegated wallet or contract, with code size. Filter airdrop lists, spot contracts or bots. 12 chains.

Great-circle distance between two airports by IATA or ICAO code in km, miles and nautical miles, bearing, approximate flight time and estimated economy-class CO2 per passenger.

Find airports by IATA/ICAO code, name or city, or the nearest to coordinates: name, codes, city, country, coordinates, elevation and scheduled service. OurAirports open data.

Algorand account: ALGO balance and locked minimum, ASA assets (USDC...) with amounts, consensus participation, opted-in apps and USD value.

Convert APR to APY or APY to APR for any compounding frequency (continuous, daily, hourly, per block...) and optionally project the final value and gain of a deposit over N days. Useful to compare DeFi yields.

Aptos wallet: APT balance and other fungible assets (USDC, USDT...) with amount and USD value, number of sent transactions and whether the account exists.