HTTP API · unreachable

Blockstream Esplora

Bitcoin blocks, addresses, transactions and fee estimates.

Public Bitcoin explorer API: confirm on-chain payments, read balances, estimate fees.

endpoint: https://blockstream.info/api
auth: none
try it: tested example call
curl -s https://blockstream.info/api/blocks/tip/height
capabilities: tx_lookup · address_balance · fee_estimates
tags: payments · crypto · open-data
pricing: free
i/o: path params → json/text
docs: https://github.com/Blockstream/esplora/blob/master/API.md
machine-readable: /api/public/registry/blockstream-esplora-api

Agents can discover Blockstream Esplora through the Agent Nexus MCP server, /llms.txt or the discovery API.