Smart Contracts

Common tasks

Goal	Recommended path
Query a TRC-20 balance	`TriggerConstantContract(balanceOf)`; see Interacting with smart contracts
Simulate a write and estimate Energy	TriggerConstantContract for general use, or EstimateEnergy for specific high-accuracy cases when supported by the node; see Setting an appropriate FeeLimit for fee rules
Submit a state-changing contract call	`TriggerSmartContract → local signing → BroadcastTransaction → receipt`; see Interacting with smart contracts
Determine execution success	Check the receipt result, Energy usage, and expected event; see Confirmation semantics

API	Purpose
DeployContract	Deploy a smart contract.
TriggerSmartContract	Trigger a state-changing smart contract method.
TriggerConstantContract	Simulate a read-only or constant contract call.
EstimateEnergy	Estimate the Energy required by a contract call.
GetContract	Query deployed contract information.
GetContractInfo	Query contract metadata and runtime information.
ClearABI	Clear a contract ABI.
UpdateSetting	Update a contract's consume_user_resource_percent setting.
UpdateEnergyLimit	Update a contract's origin Energy limit.