Bedrock geology at a coordinate from Macrostrat - geologic unit, stratigraphic name, lithology, description, age range in Ma and map scale

US county health statistics from CDC PLACES - diabetes, obesity, depression, smoking, insurance and 30+ more measures, or rank a state's counties

Turkish lira exchange rates from the central bank TCMB - forex and banknote buying and selling rates for USD, EUR, GBP and dozens more, with the bulletin date

Running pace per km and mile and speed from distance and time, plus Riegel race predictions for the mile, 5K, 10K, half marathon and marathon.

Canadian river level and flow from Water Survey of Canada stations - latest level in metres, discharge in m3/s, 24h range, trend and a short time series

German pollen forecast by region from DWD - hazel, alder, ash, birch, grasses, rye, mugwort and ragweed levels today, tomorrow and the day after

Estimated one-rep max from any submaximal set using six formulas, the range between them, and a percentage table of training weights and reps.

Aave V3 reserve state on 8 chains for any asset: supply and borrow APY, utilization, total supplied and borrowed, LTV, liquidation threshold and caps.

Bedtimes that end a 90-minute sleep cycle at a given wake time, or wake times for a given bedtime, with total sleep hours and time to fall asleep.

Batch contract reads on 16 EVM chains: send up to 20 eth_call requests in one request and get a result, revert flag and uint or address reading for each.

Where a wallet is active: native balance, transaction count and contract flag on all 16 EVM chains in one call, with the most active chain.

Ethereum blob fee: EIP-4844 blob base fee in wei and gwei, cost of one and six blobs in ETH, blobs in the latest block and whether fees are rising.

Decode transaction input data into a function name and arguments for ERC-20, NFT, DEX router, multicall and ownership calls. Computed locally.

Find the block mined at or before any date or unix time on 16 EVM chains, with the gap in seconds, the next block and the chain's block interval.

Predict the contract address a deployer will get from CREATE for a given nonce. The same on every EVM chain. Computed locally with RLP and keccak256.

Contract call simulation (eth_call) on 16 EVM chains: raw result, uint, address and string readings, any block, and a decoded revert reason on failure.

Encode a contract call: give a function signature and a JSON array of arguments, get calldata and the 4-byte selector. Computed locally, no node needed.

EIP-712 typed data hashing: signing digest, domain separator and struct hash from JSON, with an optional signature check against an address.

ENS namehash and labelhash for any name, with ENSIP-15 normalisation and per-label hashes: the registry node used to read ENS records. Computed locally.

Which of 16 EVM chains an address has contract code on, with a bytecode hash match to spot true multichain deployments versus look-alikes.