eth_estimateGas - Unichain RPC Method
Estimate gas required for transactions on Unichain. Essential for optimizing transaction costs for decentralized exchanges, liquidity protocols, and MEV-protected DeFi applications.
Estimates the gas necessary to execute a transaction on Unichain.
Why Unichain? Build on Uniswap's DeFi-optimized Superchain L2 with 250ms sub-blocks and 95% lower costs than Ethereum with 250ms sub-blocks (fastest L2), TEE-secured block building, native Superchain interoperability, and 65% revenue to validators.
Use Cases
The eth_estimateGas method is essential for:
- Transaction preparation - Set appropriate gas limits
- Cost estimation - Calculate transaction costs before sending
- Error detection - Identify reverts before spending gas
- DeFi operations - Estimate costs for decentralized exchanges, liquidity protocols, and MEV-protected DeFi applications
Code Examples
Error Handling
| Error Code | Message | Description |
|---|---|---|
| -32000 | Execution reverted | Transaction would fail |
| -32602 | Invalid params | Invalid transaction parameters |
Tip: If estimation fails, the transaction would likely revert if sent.
Related Methods
eth_gasPrice- Get current gas priceeth_sendRawTransaction- Send transaction
eth_getTransactionReceipt
Get transaction receipt with status and logs on Unichain. Essential for verifying transaction execution for decentralized exchanges, liquidity protocols, and MEV-protected DeFi applications.
eth_gasPrice
Get current gas price on Unichain. Essential for transaction cost estimation for decentralized exchanges, liquidity protocols, and MEV-protected DeFi applications.