`replay_tx`

Spin up an anvil-zksync node that forks a remote network and immediately re-executes a chosen L2 transaction.

Perfect for step-through debugging or gas cost inspection of real world transactions and contract interactions.

Synopsis

anvil-zksync replay_tx --fork-url <FORK_URL> <TX>

Both parameters are required:

Alias	RPC endpoint
`era`, `mainnet`	`https://mainnet.era.zksync.io`
`era-testnet`, `sepolia-testnet`	`https://sepolia.era.zksync.dev`
`abstract`	`https://api.mainnet.abs.xyz`
`abstract-testnet`	`https://api.testnet.abs.xyz`
`sophon`	`https://rpc.sophon.xyz`
`sophon-testnet`	`https://rpc.testnet.sophon.xyz`
`cronos`	`https://mainnet.zkevm.cronos.org`
`cronos-testnet`	`https://testnet.zkevm.cronos.org`
`lens`	`https://rpc.lens.xyz`
`lens-testnet`	`https://rpc.testnet.lens.xyz`
`openzk`	`https://rpc.openzk.net`
`openzk-testnet`	`https://openzk-testnet.rpc.caldera.xyz/http`
`wonderchain-testnet`	`https://rpc.testnet.wonderchain.org`
`zkcandy`	`https://rpc.zkcandy.io`

Name	Description
`<TX>`	Transaction hash (`0x…`, 32 bytes). Required.

Flag	Description
`--fork-url <FORK_URL>`	Network to fork from (endpoint or alias). Required.

All global flags (verbosity, cache, gas tuning, etc.) are also available.

Downloads block state up to (but not including) <TX>.
Replays the transaction locally, reproducing calldata & timestamp.
Provides full VM traces, logs, and storage-diff when -vv or higher is enabled.

anvil-zksync replay_tx \
  --fork-url mainnet \
  0xe56fd585309971c7c68b19c6c75a39c4b450731f9884c7b73e13276bb6db9b5b

anvil-zksync replay_tx \
  --fork-url http://127.0.0.1:3050 \
  0xdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef

anvil-zksync -vv replay_tx \
  --fork-url mainnet \
  0x9419f4eb8d553dd4f4d254badfd28efb0b2416c4b0eb26076f90e1226501a3e0