UserOperation Mempool Monitor

WHAT IT DOES UserOperation Mempool Monitor provides real-time monitoring of ERC-4337 account abstraction mempool activity, enabling developers to track pending UserOperations, submission status, and bundler performance. It retrieves on-chain EntryPoint contract bytecode via eth_getCode and fetches verified source code and ABI from block explorer APIs. The tool analyzes UserOperation mempool data and pending operation lists, tracks submitted UserOperation transaction logs and receipts, and monitors the flow of UserOperations through the AA pipeline. It provides a comprehensive dashboard showing mempool status (Active, Congested, or Quiet), counts of pending UserOperations, recent submissions, failures, and total operations. The output includes a detailed UserOperation list showing each operation's sender, nonce, and status (pending, submitted, or failed), a statistics dashboard with counts for pending, submitted, failed, and total operations, and actionable recommendations for addressing mempool issues—such as congestion, failed operations, or bundler delays. This enables AA wallet developers, bundler operators, and dApp developers to monitor UserOperation propagation, identify bottlenecks, and optimize submission strategies. HOW TO USE Connect your BGWallet to the target EVM chain. Paste the address of the ERC-4337 EntryPoint contract you wish to monitor. Optionally supply a GitHub repository URL to pull AA implementation details and mempool specifications for additional context. The tool fetches the EntryPoint contract's bytecode and state, queries mempool data, and generates a comprehensive monitoring dashboard. Review the mempool status, pending count, submitted count, the UserOperation list showing individual operation statuses, the statistics dashboard, and the list of recommendations. Use the monitoring results to track UserOperation propagation, identify failed operations, and optimize bundler interaction strategies. USEROPERATION MEMPOOL MONITORING AND STATUS TRACKING ENGINE The real technical mechanism is the UserOperation mempool monitoring and status tracking engine that combines EntryPoint contract analysis with mempool data aggregation. The tool first analyzes the EntryPoint contract's bytecode to understand the UserOperation lifecycle—specifically how operations are validated, submitted, and executed through the handleOps function. It then aggregates mempool data from multiple sources: pending UserOperations from the mempool, submitted operations from transaction logs, and completed operations from receipts. The engine tracks each UserOperation through its lifecycle, updating status as it moves from pending to submitted to confirmed or failed. The mempool status classification is derived from the volume of pending operations: Active (5-12 pending), Congested (>12 pending), or Quiet (