Query Cash-In by E2E ID

Queries a PIX transaction by its End-to-End ID (BACEN unique identifier).

Endpoint

GET /api/external/transactions/e2e/:e2e_id

Headers

Header	Type	Required	Description
Authorization	String	Yes	ApiKey {client_id}:{client_secret}
X-Key-Case	String	No	Set to camelCase to receive response fields in camelCase (default is snake_case)

Path Parameters

Parameter	Type	Required	Description
e2e_id	String	Yes	Transaction End-to-End ID (BACEN format, regex ^E\d{8}[a-zA-Z0-9]{22,26}$)

E2E ID format (BACEN)

The E2E ID follows the BACEN standard: E + ISPB (8 numeric digits) + UTC timestamp (13 numeric digits) + alphanumeric identifier (9-13 characters, may contain letters and numbers).

Valid examples:

• E37839059202603071530000001 -- all numeric (emitted by systems that use only digits)
• E18236120202604221900s1218936740 -- contains letters (emitted by Nubank, ISPB 18236120)
• E60746948202604091234A2004l6Agm0 -- typical alphanumeric (uppercase and lowercase letters are valid)

Attention: never assume the E2E is fully numeric -- issuing banks may use letters. Your integration must accept the regex ^E\d{8}[a-zA-Z0-9]{22,26}$.

Example

curl -X GET https://api.owem.com.br/api/external/transactions/e2e/E37839059202603071530000001 \
  -H "Authorization: ApiKey $CLIENT_ID:$CLIENT_SECRET"

Success Response (200)

{
  "worked": true,
  "data": {
    "id": "a1b2c3d4e5f64a7b8c9d0e1f2a3b4c5d",
    "transaction_id": "7popu57v6us7p6pcicgq12345",
    "end_to_end_id": "E37839059202603071530000001",
    "external_id": "order-9876",
    "type": "pix",
    "status": "settled",
    "amount": 300000,
    "fee_amount": 0,
    "net_amount": 300000,
    "description": "Pedido #1234",
    "direction": "inbound",
    "counterparty_name": "Maria Santos",
    "payer_document": "12345678901",
    "recipient_document": "37839059000188",
    "recipient_key": "contato@empresa.com.br",
    "payer_ispb": "60701190",
    "payer_bank_name": "ITAU UNIBANCO S.A.",
    "created_at": "2026-03-07T15:30:00Z",
    "completed_at": "2026-03-07T15:30:02Z"
  }
}

This endpoint returns the same transaction object described in Query by ID -- including the alternate forms processing (PIX OUT in flight, with nested recipient object) and failed (with reason_code + reason_description). All monetary values are in base units (÷ 10,000 for BRL).

Error Response (404)

{
  "worked": false,
  "detail": "Transação não encontrada para o E2E informado"
}

Error Response (401)

{
  "error": {
    "status": 401,
    "message": "Missing API key credentials. Use Authorization: ApiKey <client_id>:<client_secret>"
  }
}

Cash-In and Cash-Out

This endpoint returns both inbound and outbound transactions. Use the direction field to differentiate: inbound (receiving) or outbound (sending).