Automating the opening and closing of channels to maintain "liquidity"—the ability for funds to move back and forth.
Polar will generate real gRPC endpoints (e.g., localhost:10001 , localhost:10002 ), macaroons, and TLS certificates. lnd emulator utility work
LND has complex subsystems. The emulator prioritizes utility over completeness: Automating the opening and closing of channels to
lightningnetwork/lnd: Lightning Network Daemon ⚡️ - GitHub lnd-sim for unit testing
Whether you use Polar for visual network emulation, lnd-sim for unit testing, or Python scripts to mock specific gRPC failures, the goal is the same. You want to verify that your code works not just on a sunny day, but when channels fail, invoices expire, and peers disconnect.