> For the complete documentation index, see [llms.txt](https://firstoken.gitbook.io/api-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://firstoken.gitbook.io/api-docs/api-reference/proxy/proxy-jose.md).

# Proxy JOSE

This endpoint allows processing tokenized transactions using the JOSE standard for information security

### Prerequisites

Before using this endpoint, a configuration process must be completed on our side using the RSA keys provided by the client:

* Processor's public key
* Merchant's private key

### Base URL

```url
https://api.firstoken.co/proxy/jose
```

{% hint style="warning" %}
**Note:** In case, you have to make some sandbox tests you must be called from the base URL <https://api.firstoken-staging.co/proxy/jose>
{% endhint %}

{% tabs %}
{% tab title="cUrl" %}

```
curl -X POST --location 'https://api.firstoken.co/proxy/jose' \
--header 'Content-Type: application/json' \
--header 'ft-access-key: <YOUR_API_KEY>' \
--data '{
    "uniqueCode": "010200001",
    "terminalId": "000AAAAA",
    "purchaseAmount": 1200000,
    "ivaTax": 0,
    "currencyCode": "170",
    "cardData": {
        "cardNumber": "{{token:detokenize | extract:card}}",
        "cardExpireMonth": "{{token:detokenize | extract:expiration | date: MM }}",
        "cardExpireYear": "{{token:detokenize | extract:expiration | date: YY }}",
        "cvv": null,
        "brandId": "01",
        "cardAccountTypeId": "00"
    },
    "installmentsNumber": 1,
    "ipAddress": "190.66.124.31",
    "references": [
        {
            "referenceKey": "codReferencia",
            "referenceDescription": "9922"
        },
        {
            "referenceKey": "documentoComprador",
            "referenceDescription": "1111111111111"
        }
    ],
    "iacTax": 0,
    "merchantNameAggregate": null,
    "mcc": null,
    "services": null,
    "cofTransaction": null,
    "recurringTransaction": "R",
    "credentialOnFile": null
}'
```

{% endtab %}

{% tab title="Headers of the request" %}

* **ft-access-key**: string\
  This is the authentication header for the request.\
  Required: true
* **Content-Type:** application/json
  {% endtab %}
  {% endtabs %}

### Important notes

* Token fields use special syntax depending on the token type:&#x20;
  * For Permanent Tokens (using detokenization):
    * Card number: `{{token:detokenize | extract:card}}`
    * Expiration date:
      * Month: `{{token:detokenize | extract:expiration | date: MM }}`
      * Year: `{{token:detokenize | extract:expiration | date: YY }}`
  * For Temporary Tokens (using transaction):
    * Card number: `{{token:transaction | extract:card}}`
    * Expiration date:
      * Month: `{{token:transaction | extract:expiration | date: MM }}`
      * Year: `{{token:transaction | extract:expiration | date: YY }}`

### Security

* Communication is done through HTTPS.
* Authentication is required via the `ft-access-key` header.
* Sensitive information is processed using the JOSE standard.

<details>

<summary>Success Response</summary>

```json
{
    "status": 200,
    "data": {
        "value": "eyJhbGciOiJSU0EtT0FFUC0yNTYiLCJlbmMiOiJBMjU2R0NNIiwia2lkIjoibkNSdjVxSUp3Q2wwbkVTLUF2cVpxb3otV21WQzR3SHc3a29Pa3NVQThBcyJ9...[JWT value truncated]...UJ0kp1kwoG2EJSDe10MJjA",
        "encryption": "JWT",
        "signed": true
    }
}
```

* **status**: number\
  HTTP status code (200 for success)
* **data.value**: string\
  Encrypted JWT of the payload received
* **data.encryption**: string\
  Type of encryption used (JWT)
* **data.signed**: boolean\
  Indicates if the response is signed

</details>

<details>

<summary>Error Response</summary>

```json
{
    "status_code": 403,
    "status": "fail",
    "description": "Access Denied",
    "data": ""
}
```

* **status\_code**: number\
  HTTP error status code
* **status**: string\
  Response status ("fail" for errors)
* **description**: string\
  Error description
* **data**: string\
  Additional error data (is an empty string)

</details>


---

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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://firstoken.gitbook.io/api-docs/api-reference/proxy/proxy-jose.md?ask=<question>&goal=<endgoal>
```

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