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TxTracer is a modern TVM transaction tracing tool that combines multiple debugging and analysis features in one interface.

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Features

TxTracer screenshot
  1. Tracing TVM execution with transaction details and logs
  2. Interactive environment for experimenting with TVM assembly and FunC
  3. Convert FunC/Tolk code to TVM assembly and explore how it is compiled
  4. Built-in reference for TVM opcodes, stack effects, and control flow
  5. Sandbox UI extends the standard @ton/sandbox with transaction tracing capabilities, allowing you to visualize and debug smart contract interactions.
  6. Emulate transaction tree using your BoC message

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Use cases

  • Transaction tracing — Follow execution path and stack changes end-to-end
  • Assembly experimentation — Test and compile code, inspect VM behavior in real-time
  • Instruction lookup — Find TVM instruction semantics while reading disassembly
  • Error investigation — Debug invalid opcodes and type errors using instruction constraints
  • Debugging — Debug smart contracts using it with sandbox
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