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debug_traceTransaction - Celo RPC Method

Trace a transaction execution on Celo. Requires archive node for debugging mobile stablecoin payments (MiniPay 10M+ wallets), remittances, humanitarian aid, and local currency stablecoins (cUSD, cNGN, cEUR).

Traces a transaction execution on Celo by transaction hash.

Archive Node Required

This method requires an archive node. It is not available on full nodes.

When to Use This Method

  • Analyze transaction execution step-by-step - Trace every opcode and internal call in a completed transaction for mobile stablecoin payments (MiniPay 10M+ wallets), remittances, humanitarian aid, and local currency stablecoins (cUSD, cNGN, cEUR)
  • Debug failed transactions - Pinpoint the exact opcode and call depth where a transaction reverted on Celo
  • Examine internal call traces - Follow the full call tree including delegate calls and contract creations
  • Gas usage profiling - Measure gas consumption per opcode to identify optimization opportunities

Best Practices

  • Requires archive node access; not available on standard full nodes
  • Traces can be very large for complex transactions with many internal calls
  • Use tracer options like onlyTopCall or callTracer to limit output size
  • Store traces off-chain for analysis rather than querying repeatedly

Tracer Options

  • {} - Default opcode tracer (verbose)
  • { tracer: "callTracer" } - Call tree tracer
  • { tracer: "prestateTracer" } - Pre-state tracer

Code Examples

debug_traceCall

Trace a call without creating a transaction on Celo. Simulate transactions, debug contract interactions, and analyze gas usage with full execution traces.

eth_chainId

Get the chain ID for Celo. Essential for transaction signing and network verification.

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When to Use This MethodBest PracticesTracer OptionsCode ExamplesRelated Methods