Biosfera

Endpoints (32 live)

• GET /o/erc721-owner — Use when you need the current owner of an ERC-721 token id on Base, Ethereum, Arbitrum, Optimism or Polygon via ownerOf, plus the collection's name and symbol. Returns exists=false if the id has no owner. (0.0015 USDC on Base)
• GET /o/x402-probe — Use before paying an unfamiliar x402 endpoint listed in the public Bazaar: one unpaid probe tells you if it is reachable, returns a valid HTTP 402 challenge, which networks and assets it accepts, the exact price, the pay-to address and the latency. Does not pay the target. (0.001 USDC on Base)
• GET /o/erc20-supply — Use when you need the current total supply of an ERC20 token on Base, Ethereum, Arbitrum, Optimism or Polygon, fetched live via totalSupply eth_call. Returns raw integer supply and a decimal-adjusted amount. (0.0015 USDC on Base)
• GET /o/is-contract — Use when you need to know whether an address on Base, Ethereum, Arbitrum, Optimism or Polygon is a deployed smart contract, via a live eth_getCode call. Returns a boolean and the deployed bytecode size in bytes. (0.001 USDC on Base)
• GET /o/erc20-balance — Use when you need the current ERC20 token balance of a wallet on Base, Ethereum, Arbitrum, Optimism or Polygon, fetched live via balanceOf eth_call. Returns raw integer balance and a decimal-adjusted amount. (0.002 USDC on Base)
• GET /o/base-tx — Use when you need to confirm whether a Base mainnet transaction hash succeeded, reverted, is pending or does not exist, with block, confirmations, sender, recipient, gas used and total fee in ETH (L2 plus L1 data fee). Read-only, public blockchain data. (0.002 USDC on Base)
• GET /o/usgs-earthquakes — Use when you need recent earthquakes worldwide from the US Geological Survey: filter by minimum magnitude and a window of 1 to 72 hours, optionally near a coordinate within a radius in km. Returns time, magnitude, depth, place and coordinates of up to 100 events. US government public-domain data. (0.002 USDC on Base)
• GET /o/fx-ecb — Use when you need an official daily reference exchange rate between two of 30 major currencies (EUR, USD, BRL, GBP, JPY, CNY...) from the European Central Bank, optionally converting an amount. Returns the rate date. Reference rates are for information, not trading quotes. (0.001 USDC on Base)
• GET /o/base-balance — Use when you need the live native ETH balance and USDC balance of any address on Base mainnet (chain 8453) in one call. Returns exact integer units and human decimals, plus the block it was read at. Read-only, public blockchain data. (0.002 USDC on Base)
• GET /o/evm-status — Use when you need a live snapshot of an EVM chain: chain id, latest block number and its age in seconds, current gas price and base fee in gwei. Covers Base, Ethereum, Arbitrum, Optimism and Polygon in one batched read-only call to public RPC. (0.001 USDC on Base)
• GET /o/us-weather — Use when you need the official National Weather Service forecast for a latitude/longitude inside the United States: next periods with temperature, wind, chance of precipitation and a short summary, plus the nearest city. US government data. (0.002 USDC on Base)
• GET /o/gas-now — Use when you need current gas prices on Base, Ethereum, Arbitrum, Optimism or Polygon before sending a transaction: legacy gas price, latest base fee and suggested priority fee in gwei, plus the block they refer to. (0.001 USDC on Base)
• GET /o/fee-history — Use when you need recent base fees and priority fee percentiles on Base, Ethereum, Arbitrum, Optimism or Polygon to pick a fee: returns the last N blocks (1 to 20) with base fee, gas used ratio and 25/50/75 percentile tips in gwei. (0.0015 USDC on Base)
• GET /o/eth-call — Use when you need to simulate a read-only call to any contract on Base, Ethereum, Arbitrum, Optimism or Polygon: pass the target and the ABI-encoded calldata (hex), get the raw return data. No transaction is sent. (0.0015 USDC on Base)
• GET /o/erc721-tokens-of-owner — Use when you need which token ids of an ERC-721 collection an address owns on Base, Ethereum, Arbitrum, Optimism or Polygon. Works for enumerable collections (tokenOfOwnerByIndex); returns up to 50 ids per page with the total balance, and says when the collection is not enumerable. (0.002 USDC on Base)
• GET /o/ens-resolve — Use when you need to turn an ENS name (like vitalik.eth) into an Ethereum address, or an address into its primary ENS name. Reads the ENS registry and resolver on Ethereum mainnet live. Returns null when nothing is set. (0.002 USDC on Base)
• GET /o/estimate-gas — Use when you need the gas a transaction would consume on Base, Ethereum, Arbitrum, Optimism or Polygon before signing it: pass from, to, optional calldata and value (wei). Returns the estimate and the cost at the current gas price. (0.0015 USDC on Base)
• GET /o/us-weather-alerts — Use when you need the active National Weather Service alerts for a US state (two-letter code) or for a coordinate: event type, severity, urgency, headline, affected areas and expiry. US government public-domain data. (0.002 USDC on Base)
• GET /o/tx-by-hash — Use when you need the content of a transaction on Base, Ethereum, Arbitrum, Optimism or Polygon by its hash: sender, recipient, value, nonce, gas limit, gas price fields, input data size and function selector, and whether it is mined or pending. (0.002 USDC on Base)
• GET /o/contract-profile — Use when you meet an unknown address on Base, Ethereum, Arbitrum, Optimism or Polygon and need to know what it is in one call: has code and its size, ERC-20 (name, symbol, decimals, supply), ERC-721 or ERC-1155 (via ERC-165 supportsInterface), and whether it is an EIP-1967 proxy and its implementation. (0.002 USDC on Base)

+12 more endpoints.