Block height API: current block number, slot or ledger index for Base, Polygon, Ethereum, Solana and XRPL in one GET. Optional network (comma list; default all five). Per network: chainId, height, headTime, headAgeSeconds, finalizedHeight and finalityGap (EVM finalized tag, Solana finalized slot, XRPL validated ledger). Free public RPCs, read-only. Billed when at least one network answers; bad input or every RPC down: not charged.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.002000 USDC | 0x5b32...e0e9 |
| solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp | exact | 0.00 tokens | BjY98A...TRPz |
| xrpl:0 | exact | 0.002 | r3Fbir...LQcf |
| Polygon | exact | $0.002000 USDC | 0x5b32...e0e9 |