alchemy_simulateAssetChangesBundle

1 import requests 2 3 url = "https://eth-mainnet.g.alchemy.com/v2/:apiKey" 4 5 payload = {} 6 headers = {"Content-Type": "application/json"} 7 8 response = requests.post(url, json=payload, headers=headers) 9 10 print(response.json())

1 { 2 "jsonrpc": "2.0", 3 "id": "1", 4 "result": { 5 "changes": [ 6 { 7 "assetType": "ERC20", 8 "changeType": "TRANSFER", 9 "from": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045", 10 "to": "0xfc43f5f9dd45258b3aff31bdbe6561d97e8b71de", 11 "rawAmount": "1000000", 12 "contractAddress": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", 13 "decimals": 6, 14 "symbol": "USDC", 15 "name": "USD Coin", 16 "logo": "https://static.alchemyapi.io/images/assets/3408.png", 17 "amount": "1", 18 "tokenId": null 19 } 20 ], 21 "error": null 22 } 23 }

Simulates multiple transactions sequentially and returns a combined list of asset changes.

Path parameters

apiKeystringRequired

Request

This endpoint expects an object.

transactionslist of objectsRequired

An array of 1–2 transaction objects to run in sequence.

Response

The asset changes resulting from the sequential simulation.

changeslist of objects

gasUsedstringOptional

The amount of gas used for the simulation

errorstringOptional

Error message if the transaction would revert, null otherwise