Cardano API Documentation

Overview

Bitquery's Cardano APIs let you query the chain through GraphQL — blocks, transactions, addresses, native tokens, UTXO-level inputs and outputs, staking, and multi-hop fund flow. Replace the example addresses and token IDs in any query with your own values to point them at real wallets and assets.

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Endpoint

Cardano GraphQL queries are served at https://graphql.bitquery.io.

What you can do with the Cardano API

• Look up blocks by height, hash, or time window — including epoch, slot, slot leader, and VRF key.
• Pull transactions with input/output totals, fees in ADA and USD, mint count, and withdrawals.
• Get address balances across ADA and every native token a wallet holds, plus staking and rewards.
• Walk UTXO-level inputs and outputs to reconstruct exact balances or build transaction feeds.
• Track mints and burns of any native token (NFTs, fungibles, stablecoins like DJED).
• Trace ADA flows inbound and outbound across multiple hops with Coinpath.

How the Cardano API differs from running your own node

cardano-node / RPC	Bitquery Cardano API
Raw chain state — you build the indexer	Pre-indexed and parsed: blocks, txs, UTXOs, native tokens, staking
No historical analytics out of the box	History, joins, aggregations, USD conversion
You stream and decode CBOR yourself	GraphQL response — pick the fields you need
Best for submitting transactions and full validation	Best for analytics, dashboards, wallet UIs, and compliance work

Quick start

This query returns the 5 most recent Cardano blocks with hash, height, transaction count, and timestamp.

{
  cardano(network: cardano) {
    blocks(options: {desc: "height", limit: 5}) {
      height
      blockHash
      transactionCount
      timestamp {
        time(format: "%Y-%m-%d %H:%M:%S")
      }
    }
  }
}

API reference

Core data

• Cardano Blocks API — block lookups by height or time, epoch/slot context, slot-leader metadata.
• Cardano Transactions API — transaction details, fees in ADA and USD, mint counts, daily counts.
• Cardano Inputs and Outputs API — UTXO-level data for balance reconstruction and transfer feeds.

Addresses and staking

• Cardano Address API — per-asset balances, staking snapshot, and the addressStats aggregate cube.

Native tokens

• Cardano Mints API — native-token mint and burn events, including NFT drops and fungible issuance.

Stablecoins

• Djed Stablecoin API — DJED mints, burns, transfers, and wallet-level balance examples.

Fund tracing

• Cardano Coinpath API — multi-hop inbound and outbound ADA flow tracing for compliance and treasury work.