{"entry":{"slug":"blockstream-esplora-api","name":"Blockstream Esplora","category":"api","summary":"Bitcoin blocks, addresses, transactions and fee estimates.","description":"Public Bitcoin explorer API: confirm on-chain payments, read balances, estimate fees.","auth_mode":"none","endpoint":"https://blockstream.info/api","docs_url":"https://github.com/Blockstream/esplora/blob/master/API.md","tags":["payments","crypto","open-data"],"capabilities":["tx_lookup","address_balance","fee_estimates"],"auth_params":[],"input_format":"path params","output_format":"json/text","rate_limit":"fair use","pricing":"free","invocation_example":"curl -s https://blockstream.info/api/blocks/tip/height","verified":false,"verified_at":null,"featured":false,"checks_total":59,"checks_ok":55,"avg_latency_ms":491,"reports_count":0,"health_ok":true,"health_status_code":200,"health_checked_at":"2026-11-01T23:17:17.465+00:00","health_latency_ms":483,"probe_url":"https://blockstream.info/api/blocks/tip/height"},"watch":{"hint":"Follow \"blockstream-esplora-api\": get alerted when it goes down, comes back, or changes shape. Free, 3 tools per key. Email follows are confirmed by a one-click email before alerts start.","how":"POST https://agentnexus.app/api/public/watch with {\"slug\":\"blockstream-esplora-api\"} and your x-api-key (the key's email gets the alerts), or add \"email\" / \"webhook_url\". Email follows must be confirmed from the inbox before alerts start."}}