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Tracing and debugging on the Monad blockchain can be done by using the following methods:

debug_traceTransaction

debug_traceBlockByNumber

debug_traceBlockByHash

debug_traceCall

These methods support multiple tracers including:
  • callTracer — traces all calls made during execution
  • prestateTracer — returns the state accessed during execution
  • stateDiffTracer — returns state changes made during execution
This information can be used for:
  • Debugging — understand why transactions failed or behaved unexpectedly.
  • Security analysis — analyze contract interactions and fund flows.
  • Gas optimization — identify expensive operations in contract execution.
  • Forensics — trace transaction paths for audit and compliance.