BNB Smart Chain
BNB Smart Chain
准备好在生产环境中调用了吗？
免费套餐涵盖个人项目。按量付费，无需绑卡即可扩展。
BNB Smart Chain
免费套餐涵盖个人项目。按量付费，无需绑卡即可扩展。
debug_traceCall runs a call against a chosen block's state and hands back a full opcode-level trace, all without submitting a transaction or burning a single unit of gas. BNB Smart Chain (BSC) charges that gas in BNB and hosts the BEP-20 contracts behind protocols like PancakeSwap and Venus, so a dry run that costs nothing is genuinely useful here. Aim it at chain ID 56 via https://bsc.therpc.io/YOUR_API_KEY. The call object and block parameter are only the start: state and block overrides let you rehearse a contract interaction under hypothetical balances or an invented block context. Any block but the latest forces a reach back into historical state, which is heavy, so plan on a debug-enabled archive node.
| # | 名称 | 类型 | 必填 | 描述 |
|---|---|---|---|---|
| 1 | transaction | object | 是 | Call object — same fields as eth_call: `from?`, `to`, `gas?`, `gasPrice?`, `maxFeePerGas?`, `maxPriorityFeePerGas?`, `value?`, `data?`. |
| 2 | blockParameter | string | 否 | Block number or tag defining the state against which the call is simulated.默认值： latest |
| 3 | options | object | 否 | Same tracer configuration object as debug_traceTransaction (tracer, tracerConfig, timeout, reexec, enableMemory, enableReturnData, disableStack, disableStorage, limit, debug). |
| 4 | stateOverrides | object | 否 | Optional map of address → { balance, nonce, code, state, stateDiff } overrides applied only for this call. |
| 5 | blockOverrides | object | 否 | Optional map of block-context fields to override (e.g. `number`, `time`, `gasLimit`, `coinbase`, `random`, `baseFee`) for the simulated call. |
| 类型 | 描述 |
|---|---|
| object | Same shape as debug_traceTransaction: structLog array with default tracer, or tracer-specific object (callTracer, prestateTracer, etc.). |
Try it live in the BNB Smart Chain playground.
| 错误码 | 错误信息 | 原因 |
|---|---|---|
-32601 | Method not found | debug namespace not enabled on the node. |
-32602 | Invalid params | Transaction object is missing required fields or blockParameter is unrecognized. |
-32000 | execution reverted | Simulated call reverted; trace is still returned up to the revert point. |
callTracer, or just switch off the stack and storage dumps. Heavy traces may get throttled on lower tiers.参数
Call object — same fields as eth_call: `from?`, `to`, `gas?`, `gasPrice?`, `maxFeePerGas?`, `maxPriorityFeePerGas?`, `value?`, `data?`.
hex block number or "latest" | "earliest" | "pending"
Same tracer configuration object as debug_traceTransaction (tracer, tracerConfig, timeout, reexec, enableMemory, enableReturnData, disableStack, disableStorage, limit, debug).
Optional map of address → { balance, nonce, code, state, stateDiff } overrides applied only for this call.
Optional map of block-context fields to override (e.g. `number`, `time`, `gasLimit`, `coinbase`, `random`, `baseFee`) for the simulated call.