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POST
/
v1
/
submit
/
add-bank-account
Add bank account
curl --request POST \
  --url https://api.byzantine.fi/v1/submit/add-bank-account \
  --header 'Content-Type: application/json' \
  --header 'X-Pubkey: <api-key>' \
  --header 'X-Signature: <x-signature>' \
  --header 'X-Timestamp: <x-timestamp>' \
  --data '{
  "accountId": "550e8400-e29b-41d4-a716-446655440000",
  "currency": "usd",
  "label": "<string>",
  "achBankAccountDetails": {
    "accountNumber": "<string>",
    "routingNumber": "<string>",
    "checkingOrSavings": "checking"
  },
  "ibanBankAccountDetails": {
    "accountNumber": "<string>",
    "bic": "<string>",
    "country": "<string>"
  }
}'
{}

Authorizations

​
X-Pubkey
string
header
required

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

Headers

​
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
​
accountId
string<uuid>
required

A UUID string

Example:

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

​
currency
enum<string>
required
Available options:
usd,
eur,
usdc,
eurc
​
label
string
required
​
achBankAccountDetails
object
​
ibanBankAccountDetails
object

Response

Bank account added successfully

The response is of type object.