Get ETH, USDC and up to ten ERC-20 balances of one address in a single call, human-readable. ETH plus USDC plus up to ten ERC-20 balances of one address in a single call…
Get an ERC-20's name, symbol, decimals, total supply, holder count and USD rate in one call. An ERC-20 on Base in one call: name, symbol, decimals, total supply, holder…
Get an ERC-20 allowance with the owner's balance and a sufficiency verdict for the amount you plan to pull. ERC-20 allowance of a spender on an owner (USDC by default),…
Crypto and blockchain news from four newsrooms in one call (Cointelegraph, Decrypt, The Block, CoinDesk), deduplicated and sorted newest first: title, link, publication…
Decode a vehicle identification number (VIN) into make, model, model year, trim, body class, engine (cylinders, displacement, fuel, power), drive type, transmission and…
The verified ABI of a smart contract on any EVM chain from Sourcify: function signatures, event names, contract name, compiler version and proxy implementations, plus th…
TraceFast knowledge graph: what an Ethereum address is, as proven facts — wallet or contract, proxy and upgradeable or not, a token and its standard, and for a token con…
Paid single-attempt reasoning puzzle for AI agents at The Latent Lounge — infer a hidden string transformation from worked examples, then apply it. Every puzzle is fresh…
Paid single-attempt reasoning puzzle for AI agents at The Latent Lounge — solve a seating-order deduction with exactly one satisfying arrangement. Every puzzle is freshl…
Paid single-attempt reasoning puzzle for AI agents at The Latent Lounge — peel back layered encodings (base64, hex, rot13, reverse) to recover a word. Every puzzle is fr…
Pay $1.00 USDC to play Rock Paper Scissors against the server. Win pays 2.0 USDC, tie pays 0.5 USDC, loss pays nothing. Network: Base Mainnet. Each request plays one com…
Ethereum address activity: ETH balance plus recent large transfers in and out. Point it at an exchange wallet, a treasury or a wallet a headline just named, and get the…
Did that X1 payment actually land? Pass ?sig=<signature> and optionally ?to=<wallet>, ?mint=<token> and ?expect=0.5 to get the payer, how much reached that wallet in XNT…
Arc bundle check: did the creator take the supply at launch, and did wallets it funded buy first? Was this Arc launch bundled? Pass ?token=0x... or ?pool=<v4 pool id>. W…
The newest Arc token launches, Argus launchpad included, small and fast: token, symbol, pool, opening time and a sell verdict (a simulated buy-then-sell about 12 s after…
Top 20 holders for a token, deduped by owner.
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Convert decimal lat/lon to a UTM coordinate (zone, latitude band, hemisphere, easting, northing) on WGS84, including the Norway/Svalbard zone exceptions. Defined for lat…
Check an ERC-20 token approval on base, ethereum, arbitrum, optimism, polygon, bsc: how much a spender (router, Permit2, contract) may move from an owner's wallet, wheth…
Resolve an ENS .eth name to its address (plus avatar, url and twitter records), or an address to its verified primary ENS name. Reads Ethereum mainnet via the ENS Univer…
Classify any address on base, ethereum, arbitrum, optimism, polygon, bsc: wallet (EOA, incl. EIP-7702 delegation) or contract, bytecode size, upgradeable proxy and imple…
Search Wikidata entities (structured knowledge graph). Returns entity id (Q-number), label, description, concept URI, aliases. Use ?q=YOUR_QUERY plus optional and lang=e…
Search Hacker News stories and comments via Algolia. Returns title, author, points, URL, num_comments, created_at, story/comment text. Use ?q=YOUR_QUERY and type=story (…
Detect text language with rule-based unicode-script + Latin stopword matching. Returns ISO 639-1 code, detection method, confidence. Use ?text=Bonjour+le+monde. Built fo…
