alchemy_simulateAssetChangesBundle

1 import requests 2 3 url = "https://eth-mainnet.g.alchemy.com/v2/:apiKey" 4 5 payload = { "0": [ 6 { 7 "from": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045", 8 "to": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", 9 "data": "0xa9059cbb000000000000000000000000fc43f5f9dd45258b3aff31bdbe6561d97e8b71de00000000000000000000000000000000000000000000000000000000000f4240" 10 }, 11 { 12 "from": "0x1234567890abcdef1234567890abcdef12345678", 13 "to": "0xfc43f5f9dd45258b3aff31bdbe6561d97e8b71de", 14 "data": "0x00abcdef" 15 } 16 ] } 17 headers = {"Content-Type": "application/json"} 18 19 response = requests.post(url, json=payload, headers=headers) 20 21 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 "tokenId": null, 14 "decimals": 6, 15 "symbol": "USDC", 16 "name": "USDC", 17 "logo": "https://static.alchemyapi.io/images/assets/3408.png", 18 "amount": "1" 19 } 20 ], 21 "gasUsed": "0xb05c", 22 "error": null 23 } 24 }

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

Path parameters

apiKeystringRequiredDefaults to docs-demo

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 or null