Returns the next quarterly contracts of a CME or Eurex index future with contract symbol, last trading day, trading end time in UTC and local time, and roll date.

Returns the next open and next close time of a stock exchange or futures market after a given time.

Returns the spread in percentage points between two US Treasury tenors on a date and whether it is inverted.

NFT Owner Lookup: Ethereum mainnet ERC-721 owner of any token ID. Returns the owner address of an ERC-721 token on Ethereum mainnet. Takes token (contract address, 0x plus 40 hex) and id (decimal token id).

Transaction Decoder: Base tx decoded -- status, transfers, swaps, USD value. Returns: a decoded transaction: status (pending, confirmed, reverted or not_found), block, from and to, value and fee in ETH and USD (Chainlink ETH/USD), and its decoded logs -- ERC-20 and ERC-721 transfers with symbol, amount and USD where priced, approvals (unlimited flagged), WETH wraps and DEX swap events -- plus a one-line summary. Deterministic decoding of the receipt, no model; a mined answer is cached.

Allowance Check: ERC-20 approval a wallet granted a spender on Ethereum mainnet. Ethereum mainnet ERC-20 allowance. Takes query parameters token (ERC-20 contract, 0x + 40 hex), owner (0x + 40 hex) and spender (0x + 40 hex). Returns the raw allowance read from the contract.

Contract ABI Lookup: Ethereum mainnet ABI for any contract address. Ethereum mainnet contract ABI. Takes query parameter address (contract, 0x + 40 hex). Returns the contract's ABI as JSON when one is available for that address.

Native Balance Check: ETH balance of any address on Ethereum mainnet. Ethereum mainnet ETH balance for one address via eth_getBalance. Takes address (0x + 40 hex) and returns the hex balance in wei.

Latest Block: current Ethereum block height on Ethereum mainnet. Returns the latest Ethereum mainnet block number via eth_blockNumber. Takes no parameters.

Network Status: Ethereum mainnet chain data -- block height, gas, fees.

On-Chain Bundle: multiple Ethereum mainnet reads in one paid call. Parts: eth_mainnet_eth_getlogs, eth_mainnet_eth_gettransactionbyhash. Returns: each named part service's own result, in one paid call, keyed by the part's name -- exactly what each part returns when bought alone; the call succeeds only when every part answers. It takes the union of the parts' query parameters.

Gas Price Check: current Ethereum gas price on Ethereum mainnet. Returns the current Ethereum mainnet gas price in wei; takes no parameters.

Chain ID Check: network identifier on Ethereum mainnet. Ethereum mainnet chain id via eth_chainId: returns the hex result and its decimal value, read live from an Ethereum RPC node. Use it as a paid connectivity and chain check before an agent signs or reads on mainnet.

Event Log Search: contract logs filtered by topic and block range on Ethereum mainnet. Ethereum mainnet contract event logs via eth_getLogs. Query parameters: address (contract, 0x + 40 hex), topic0 (optional event signature hash, 0x + 64 hex), blocks (optional, last N blocks, 1-100, default 10).

Block Lookup: any Ethereum block by number on Ethereum mainnet. Returns the Ethereum block header for a given block number or 'latest'.

Nonce Check: transaction count for any address on Ethereum mainnet. Returns the number of transactions sent from an Ethereum address (eth_getTransactionCount).

Transaction Lookup: full details by hash on Ethereum mainnet. Returns full Ethereum transaction details by hash via eth_getTransactionByHash on Ethereum mainnet.

Contract Code Check: deployed bytecode at any address on Ethereum mainnet. Takes an address (0x + 40 hex) and returns the contract bytecode on Ethereum mainnet via eth_getCode.

On-Chain Bundle: multiple Ethereum mainnet reads in one paid call. Parts: eth_mainnet_erc20_totalsupply, eth_mainnet_contract_abi, eth_mainnet_eth_getcode. Returns: each named part service's own result, in one paid call, keyed by the part's name -- exactly what each part returns when bought alone; the call succeeds only when every part answers. It takes the union of the parts' query parameters.

Receipt Check: status, gas used, logs by tx hash on Ethereum mainnet. Ethereum mainnet transaction receipt via eth_getTransactionReceipt. Takes query parameter hash (transaction hash, 0x + 64 hex). Returns the node's receipt: status, block, gas used, logs.