All list resources may be queried using a syntax that was inspired from the RestDB query syntax.
Examples
Search for transactions with the operator (also known as payer) of 0.0.1003.
/v1/transaction?q={"operator": "0.0.1003"}
Search for transactions that were of the type CONTRACT_CALL and were invoked on the contract 0.0.24586.
/v1/transaction?q={"type": "CONTRACT_CALL", "entity": "0.0.24586"}
Search for transactions that transferred more than 5,000 ℏ.
/v1/transaction?q={"value": {"$gt": 500000000000}}