curl --request GET \
  --url https://xbt-mainnet.gomaestro-api.org/v0/esplora/address/{address} \
  --header 'api-key: <api-key>'

{
  "address": "<string>",
  "chain_stats": {
    "tx_count": 123,
    "funded_txo_count": 123,
    "funded_txo_sum": 123,
    "spent_txo_count": 123,
    "spent_txo_sum": 123
  },
  "mempool_stats": {
    "tx_count": 123,
    "funded_txo_count": 123,
    "funded_txo_sum": 123,
    "spent_txo_count": 123,
    "spent_txo_sum": 123
  }
}