A credit card can be added to the system by using the following URL and POST parameters
| Method | URL |
| POST | https://api.fairwarningsoftware.com/v1.1.1/user/billing/card/add |
Parameters to pass during the request:
| Field | Type | Required | Description |
| user_id | int | YES | The user's unique identification number from the FWS management software. |
| account_holder_name | string | YES | The name displayed on the credit card. |
| street | string | YES | The street address for the credit card's billing address. |
| street2 | string | NO | The unit for the credit card's billing address. |
| city | string | YES | The city for the credit card's billing address. |
| state | string | YES | The state for the credit card's billing address. |
| zip | string | YES | The zip code for the credit card's billing address. |
| country | string | YES | The country for the credit card's billing address. |
| card_number | int | YES | The credit card number, with no spaces, hyphens, or any other character besides integers. |
| cvv_code | int | YES | The CVV/Security code on the back of the credit card. |
| exp_month | int | YES | The month the credit card expires. |
| exp_year | int | YES | The year the credit card expires. |
| default_source | bool | NO | Whether or not the card is the default payment method. |
| Status | Response |
| 200 |
{ |
| 401 | {"error":"The API keys provided are invalid."} |
| 403 | {"error":"API keys are missing."} |
| 500 | {"error": <custom error>} |
| Field | Type | Description |
| success | bool | Whether the API call was successful or not. |
| error | string | Contains the error returned by the API, or false if there were no errors. |