Mii Libra API is a graphql api for interacting with the Libra Blockchain (testnet), it acts as a data layer in front of the blockchain. It abstracts the complexity of serialization and deserialization away, made it easy to interact with the Libra Blockchain.

API Endpoint:

There are 3 types of API available - Query APIs, Mutation APIs, and Subscription API.

Query APIs

• queryByAddress(address) - returns get_account_state_response: {account_state_with_proof} of the given account address argument.


• queryBySequenceNumber(address, sequenceNumber) - returns transaction_with_proof of the given account address and sequence number arguments.


• querySentEvents(address) - return events_with_proof (all sent events) of the given account address argument.


• queryReceivedEvents(address) - return events_with_proof (all received events) of the given account address argument.

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Mutation APIs

• createAccount() - returns address (hex string), publicKey (hex string), and mnemonic (string - words).
  Note: this API is not involved with the Libra Blockchain.


• mintCoin(address, amount) - returns get_account_state_response: {account_state_with_proof} which is the latest state of the given address argument. If mintCoin transaction succeeded, the newly minted coins is reflected in the balance.


• transferCoins( fromAddress, sequenceNumber, toAddress, amount, mnemonic) - returns transaction_with_proof of the newly transferred transaction.
  Note: sender account must be created by Mii Libra API's createAccount.

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Subscription API

• receivedCoins(receiverAddress) - returns transaction_with_proof to receiver address.

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To play around with the Mii Libra APIs in graphql playground, you can visit this link.