{"ok":true,"name":"chain_head","description":"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 on Base (other rails may charge). Price $0.002 per call via x402, ","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","properties":{"network":{"type":"string","description":"Comma list of base, polygon, ethereum, solana, xrpl (or CAIP-2 ids); default all five"}},"additionalProperties":false},"serverUrl":"https://horizonpulse.dev/mcp","transport":"http","handshake":"ok","host":"horizonpulse.dev","score":66,"grade":"B","auth":"x402","lastScannedAt":"2026-10-30T13:06:15.405Z","stale":false,"permalink":"https://agentboardai.app/mcp/horizonpulse.dev/chain_head","page":"https://agentboardai.app/site/horizonpulse.dev"}