Account Abstraction Paymaster Skill

Skill Description

Implement ERC-4337 Account Abstraction Paymaster to sponsor gas fees for users with comprehensive policy controls, real-time validation, and multi-chain support. Features real EntryPoint v0.6.0 integration tested on Ethereum mainnet with actual contract interactions.

Key Capabilities

1. Gas Sponsorship - Automatically sponsor transaction fees for eligible users
2. Policy Enforcement - Whitelist, blacklist, spending limits, token requirements
3. UserOperation Builder - Construct valid ERC-4337 UserOperations
4. EntryPoint Integration - Submit and track UserOperations on-chain
5. Multi-Chain Support - Ethereum, Polygon, Arbitrum, Optimism, Base
6. Real-Time Monitoring - Track spending, gas costs, and operation status
7. Safety Controls - Daily limits, gas estimation, validation

Components