eth_call - Optimism RPC Method
Execute smart contract calls without creating transactions on Optimism. Essential for reading contract state for cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients.
Executes a new message call immediately without creating a transaction on Optimism. Used for reading smart contract state.
Why Optimism? Build on the heart of the Superchain powering 60%+ of Ethereum L2 transactions with $6B+ TVL with OP Stack modularity, Superchain interoperability, 17M+ daily transactions across 33 chains, and 20% of tokens for public goods.
Use Cases
The eth_call method is essential for:
- Reading contract state - Query view/pure functions
- Simulating transactions - Test execution without gas costs
- DeFi integrations - Check prices, balances, allowances for cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients
- Complex queries - Execute multi-step contract logic
Code Examples
Error Handling
| Error Code | Message | Description |
|---|---|---|
| -32000 | Execution reverted | Contract function reverted |
| -32602 | Invalid parameters | Invalid data encoding |
| -32015 | VM execution error | Contract logic error |
Related Methods
eth_estimateGas- Estimate gas for transactioneth_sendRawTransaction- Send actual transaction
eth_sendTransaction
Send a transaction from an unlocked account on Optimism. Requires the node to hold the sender's private key — intended for development and testing only.
eth_getLogs
Query event logs on Optimism. Essential for indexing cross-chain DeFi, Superchain-interoperable dApps, and public goods funding recipients on the heart of the Superchain powering 60%+ of Ethereum L2 transactions with $6B+ TVL.