Get vault upgrade payload (Base -> Ethereum)

Returns two raw payloads to sign with one passkey prompt: a withdraw from the Base vault and a deposit on the destination Ethereum vault. The destination vault address is derived from a static mapping on the source vault address.

POST /v1/query/get-vault-upgrade-payload-passkey

Get vault upgrade payload (Base -> Ethereum)

cURL

curl --request POST \
  --url https://api.example.com/v1/query/get-vault-upgrade-payload-passkey \
  --header 'Content-Type: application/json' \
  --header 'X-Pubkey: <x-pubkey>' \
  --header 'X-Pubkey, X-Timestamp, X-Signature: <api-key>' \
  --header 'X-Signature: <x-signature>' \
  --header 'X-Timestamp: <x-timestamp>' \
  --data '
{
  "accountId": "550e8400-e29b-41d4-a716-446655440000",
  "sourceVaultAddr": "0x061b3aff8e21a9d194ce43cEfc20A0eFf122Ec69"
}
'

200

{
  "bodyToSign": {
    "type": "ACTIVITY_TYPE_SIGN_RAW_PAYLOADS",
    "timestampMs": "<string>",
    "organizationId": "<string>",
    "parameters": {
      "signWith": "<string>",
      "payloads": [
        "<string>"
      ],
      "encoding": "PAYLOAD_ENCODING_HEXADECIMAL",
      "hashFunction": "HASH_FUNCTION_NO_OP"
    }
  },
  "transactionId": "550e8400-e29b-41d4-a716-446655440000",
  "sourceAmount": "123.456789",
  "destinationAmount": "123.456789",
  "destinationVaultAddr": "0x2F99e35Ea811F3cC230B26dfF817604B5D4B6e38"
}

Authorizations

X-Pubkey, X-Timestamp, X-Signature · string · header · required

Headers

X-Pubkey · string · required

Integrator's ECDSA public key (P-256 curve, compressed SEC1 format). Example: 0x038fedef7c12f93bbf342ad8943b7a825a3b41f61c9dc118b2c718efebabbf62fd

X-Timestamp · string · required

Unix timestamp in seconds (UTC). Must be within tolerance window (1 minute) to prevent replay attacks. Example: 1760375826

X-Signature · string · required

ECDSA signature (DER-encoded, hex with 0x prefix). Signs the message: {timestamp}{METHOD}{path_and_query}{json_body}. Example: 0x3045022100...

Body

application/json

Request body containing the account ID and source vault address (on Base).

Request body for initiating a vault upgrade (Base -> Ethereum)

accountId · string<uuid> · required

A UUID string

Example:

"550e8400-e29b-41d4-a716-446655440000"

sourceVaultAddr · string · required

The address of the source vault on Base (8453)

Example:

"0x061b3aff8e21a9d194ce43cEfc20A0eFf122Ec69"

Response

200

application/json

Payloads to sign created successfully

Response containing the two raw payloads to sign (withdraw from Base and deposit on Ethereum) in one passkey prompt.

bodyToSign · object · required

The object that needs to be signed by the end user to make a batch of transactions.

Show child attributes

transactionId · string<uuid> · required

A UUID string

Example:

"550e8400-e29b-41d4-a716-446655440000"

sourceAmount · string · required

A high-precision decimal number represented as a string

Example:

"123.456789"

destinationAmount · string · required

A high-precision decimal number represented as a string

Example:

"123.456789"

destinationVaultAddr · string · required

The destination vault address on Ethereum.

Example:

"0x2F99e35Ea811F3cC230B26dfF817604B5D4B6e38"