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POST
/
sdk
/
{environmentId}
/
evm
/
simulateUserOp
Simulate an EVM AA UserOp
curl --request POST \
  --url https://app.dynamicauth.com/api/v0/sdk/{environmentId}/evm/simulateUserOp \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "chainId": "An example name",
  "operation": {},
  "entryPoint": "0xbF394748301603f18d953C90F0b087CBEC0E1834",
  "value": "An example name",
  "domain": "An example name"
}
'
{
  "inAssets": [
    {
      "asset": {
        "address": "0xbF394748301603f18d953C90F0b087CBEC0E1834",
        "chainName": "<string>",
        "decimals": 123,
        "logoUrl": "<string>",
        "name": "<string>",
        "symbol": "<string>",
        "type": "<string>",
        "chainId": 123
      },
      "transferIn": [
        {
          "rawValue": "<string>",
          "summary": "<string>",
          "usdPrice": "<string>",
          "value": "<string>"
        }
      ],
      "transferOut": [
        {
          "rawValue": "<string>",
          "summary": "<string>",
          "usdPrice": "<string>",
          "value": "<string>"
        }
      ]
    }
  ],
  "outAssets": [
    {
      "asset": {
        "address": "0xbF394748301603f18d953C90F0b087CBEC0E1834",
        "chainName": "<string>",
        "decimals": 123,
        "logoUrl": "<string>",
        "name": "<string>",
        "symbol": "<string>",
        "type": "<string>",
        "chainId": 123
      },
      "transferIn": [
        {
          "rawValue": "<string>",
          "summary": "<string>",
          "usdPrice": "<string>",
          "value": "<string>"
        }
      ],
      "transferOut": [
        {
          "rawValue": "<string>",
          "summary": "<string>",
          "usdPrice": "<string>",
          "value": "<string>"
        }
      ]
    }
  ],
  "priceData": {
    "nativeTokenUsdPrice": 123
  },
  "showTotalFiat": true,
  "counterparties": [
    "0xbF394748301603f18d953C90F0b087CBEC0E1834"
  ],
  "validation": {
    "reason": "<string>",
    "description": "<string>",
    "classification": "<string>"
  },
  "assetExposures": [
    {
      "asset": {
        "address": "0xbF394748301603f18d953C90F0b087CBEC0E1834",
        "chainName": "<string>",
        "decimals": 123,
        "logoUrl": "<string>",
        "name": "<string>",
        "symbol": "<string>",
        "type": "<string>",
        "chainId": 123
      },
      "spenderToInfo": {}
    }
  ]
}

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Path Parameters

​
environmentId
string
required

ID of the environment

Required string length: 36
Pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$
Example:

"95b11417-f18f-457f-8804-68e361f9164f"

Body

application/json
​
chainId
string
required
Maximum string length: 255
Pattern: ^(?=\S)[\p{L}\p{N}a-zA-Z _.,:!?&%@\/+\-'|]+(?<=\S)$
Example:

"An example name"

​
operation
object
required
​
entryPoint
string
required

Valid blockchain wallet address, must be an alphanumeric string without any special characters

Maximum string length: 255
Pattern: ^[A-Za-z0-9]{18,100}$
Example:

"0xbF394748301603f18d953C90F0b087CBEC0E1834"

​
value
string
required
Maximum string length: 255
Pattern: ^(?=\S)[\p{L}\p{N}a-zA-Z _.,:!?&%@\/+\-'|]+(?<=\S)$
Example:

"An example name"

​
domain
string
Maximum string length: 255
Pattern: ^(?=\S)[\p{L}\p{N}a-zA-Z _.,:!?&%@\/+\-'|]+(?<=\S)$
Example:

"An example name"

Response

Simulated transaction result

​
inAssets
object[]
required
​
outAssets
object[]
required
​
priceData
object
required
​
showTotalFiat
boolean
required
​
counterparties
string[]

Valid blockchain wallet address, must be an alphanumeric string without any special characters

Maximum string length: 255
Pattern: ^[A-Za-z0-9]{18,100}$
Example:

"0xbF394748301603f18d953C90F0b087CBEC0E1834"

​
validation
object
​
assetExposures
object[]
Last modified on January 21, 2026