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Retracer is a classic TVM transaction tracing tool that provides detailed inspection of transaction execution. It’s useful for:
  • Understanding complex transaction flows;
  • Debugging smart contract behavior;
  • Analyzing gas usage and performance.
Some explorers display links to Retracer on their transaction pages. Otherwise it’s recommended to use a more modern TxTracer tool. Its source code can be found on GitHub. Retracer screenshot On this screenshot, key elements of its interface are visible:
  • Transaction details — Sender, contract, amounts, time, LT, fees, and balances;
  • C5 button — Display action list: complete details of all actions performed during the transaction;
  • Logs button — Detailed logs for deeper debugging;
  • List of instructions (on the left) — Steps taken by execution of the contract on TVM;
  • Stack (on the right) — Stack during execution of current instruction.