Check case status
POST
/v1/check
If not found in local DB, attempts USCIS lookup fallback.
Request
Body Params application/jsonRequired
Responses
Request Request Example
Shell
JavaScript
Java
Swift
curl --location --request POST 'https://devapi.immigraflow.com/v1/check' \
--header 'X-API-KEY: <api-key>' \
--header 'X-API-SECRET: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
"email": "user@example.com",
"receipt_number": "string"
}'Response Response Example
200 - Success
{
"success": true,
"case": {
"receipt_number": "LIN9999106501",
"description": "Case retrieved from USCIS",
"created_at": "2026-04-20 16:34:36",
"user_case_id": "EXTERNAL",
"name": "USCIS Case",
"registered_by": "USCIS API"
},
"status_updates": [
{
"status_code": "Case Was Received",
"status_description": "On September 5, 2023, we received your Form I-130, Petition for Alien Relative, Receipt Number LIN9999106501, and sent you the receipt notice that describes how we will process your case. Please follow the instructions in the notice. If you have any questions, visit the USCIS Contact Center webpage at <a href=\"https://www.uscis.gov/contactcenter\" target=\"_blank\">www.uscis.gov/contactcenter</a>. If you move, go to <a href=\"https://www.uscis.gov/addresschange\" target=\"_blank\">www.uscis.gov/addresschange</a> to give us your new mailing address.",
"form_type": "I-130",
"detail_message": "",
"status_code_es": "Caso Recibido",
"status_description_es": "El 05 de Septiembre de 2023, recibimos su Formulario I-130, Petición de Familiar Extranjero, número de recibo LIN9999106501, y le enviamos la notificación de recibo que describe cómo procesaremos su caso. Siga las instrucciones de la notificación. Si tiene alguna pregunta, visite la página web del Centro de Contacto de USCIS en <a href=\"https://www.uscis.gov/es/centrocontacto\" target=\"_blank\">www.uscis.gov/es/centrocontacto</a>. Si cambia de domicilio, visite <a href=\"https://www.uscis.gov/es/cambiodedireccion\" target=\"_blank\">www.uscis.gov/es/cambiodedireccion</a> para notificarnos su nueva dirección postal.",
"status_code_pt": "",
"status_description_pt": "",
"submitted_date": "09-05-2023 14:28:47",
"modified_date": "09-05-2023 14:28:47",
"timestamp": "2026-04-20 16:34:35",
"notified": 0,
"history": []
}
],
"update_count": 1,
"source": "USCIS API"
}Modified at 2026-04-20 16:34:45