Account Abstraction Gas Sponsorship Calculator

WHAT IT DOES Account Abstraction Gas Sponsorship Calculator provides comprehensive gas cost estimation for ERC-4337 paymaster-sponsored UserOperations, enabling paymaster operators, dApp developers, and bundler operators to understand and optimize gas sponsorship costs. It retrieves on-chain EntryPoint contract bytecode via eth_getCode and fetches verified source code and ABI from block explorer APIs. The tool analyzes paymaster contract bytecode and deposit balances, processes UserOperation gas estimates and calldata, and incorporates gas price oracle data and network fee information. It calculates the total sponsorship cost including verification gas, call execution gas, pre-verification gas, paymaster gas, and EntryPoint overhead. The output includes a total sponsorship cost (gas), required paymaster deposit, estimated fee in ETH, a cost breakdown showing each component's gas usage and percentage of total, an efficiency classification (Optimal, Moderate, or High), and actionable recommendations for optimizing sponsorship costs—such as reducing calldata size, simplifying paymaster validation logic, or adjusting gas parameters. This enables paymaster operators to budget accurately, optimize gas sponsorship costs, and ensure sufficient deposits are maintained. HOW TO USE Connect your BGWallet to the target EVM chain. Paste the address of the ERC-4337 EntryPoint contract you wish to use. Provide the paymaster contract address that will sponsor the gas. Provide the UserOperation data as a JSON object containing all required fields. Optionally supply a GitHub repository URL to pull paymaster implementation details and sponsorship parameters for additional context. The tool fetches the EntryPoint and paymaster contract bytecode, analyzes the provided UserOperation, and generates a comprehensive sponsorship cost calculation. Review the total gas cost, deposit requirement, fee in ETH, cost breakdown matrix, efficiency classification, and recommendations. Use the results to budget for gas sponsorship, optimize UserOperations, and ensure sufficient paymaster deposits. GAS SPONSORSHIP COST CALCULATION AND PAYMASTER ANALYSIS ENGINE The real technical mechanism is the gas sponsorship cost calculation and paymaster analysis engine that combines EntryPoint bytecode analysis with ERC-4337 gas accounting semantics. The tool first analyzes the EntryPoint contract's bytecode to understand the gas accounting logic—specifically how verification gas, call gas, pre-verification gas, and paymaster gas are calculated and charged during handleOps execution. It then retrieves the paymaster contract's bytecode to analyze the validatePaymasterUserOp function and estimate the gas cost of paymaster validation and post-operation logic. The tool computes the total gas cost as the sum of verification gas (validating the UserOperation's signature and account), call gas (executing the callData on the target contract), pre-verification gas (overhead for processing the UserOperation), paymaster gas (validation and post-operation logic), and EntryPoint overhead (fixed gas cost for the handleOps function). The deposit required is calculated as 1.5x the estimated total gas cost to account for variability and buffer. The fee estimation uses gas price oracle data to convert gas to ETH. The efficiency classification helps operators quickly assess whether the sponsorship cost is reasonable: Optimal (800K). This approach provides paymaster operators with a practical, data-driven way to understand and optimize gas sponsorship costs, reducing operational expenses and ensuring reliable UserOperation execution. WHAT IT CANNOT SEE This tool cannot generate a complete gas sponsorship calculation without access to EntryPoint bytecode or paymaster data. It is limited by your RPC provider's rate limits for data retrieval, which may delay analysis on congested networks. It cannot determine actual gas costs without executing the UserOperation—estimates are based on static analysis and gas accounting rules, not actual execution. The detection relies on the completeness of the ABI and source code verification; unverified contracts or incomplete verification data will produce incomplete or inaccurate results. Detection is based on bytecode pattern matching and may miss indirect or obfuscated sponsorship logic, such as gas accounting logic hidden in libraries or via delegate calls. The tool cannot assess runtime behavior or performance implications of gas sponsorship, such as how gas costs vary with different network conditions or gas price fluctuations. It may produce false positives for data that appears similar to sponsorship data but is used for other purposes. The tool does not execute the contract to validate calculations, so it cannot confirm that estimated sponsorship costs match actual on-chain costs. It cannot account for network-specific gas pricing or future gas schedule changes—gas costs may vary across chains and over time as gas pricing mechanisms evolve. Gas sponsorship costs may vary significantly across UserOperation types and network conditions, making estimates inherently dependent on the specific operation data and network state. PLEASE NOTE This tool works exclusively with EVM-compatible chains that support ERC-4337 account abstraction. It requires active internet connectivity to access block explorer APIs and RPC endpoints. Some block explorers may require API keys for high-volume bytecode retrieval. The tool is read-only and does not execute any transactions—it only produces gas estimates. Gas sponsorship costs are estimates only; actual costs depend on network conditions, gas price, and the specific paymaster implementation. Always validate estimates with actual bundle simulations and testnet runs before mainnet deployment.