> For the complete documentation index, see [llms.txt](https://toss-ads.gitbook.io/toss-ads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://toss-ads.gitbook.io/toss-ads/references/authentication.md).

# 인증

{% hint style="info" %}
**API 연동 중 문의사항이나 개선 제안이 있으신가요?**

토스애즈 API 연동에 대한 질문이나, 건의사항이 있다면 [채널톡](http://toss-business.channel.io/)에 남겨주세요.
{% endhint %}

인증 API는 토스애즈 API를 쓰는 데 필요한 Access Token을 발급하는 API예요. 광고주 서버에서 Client ID와 Client Secret을 보내면 Access Token을 발급해 줘요.

\
처음부터 순서대로 따라 하려면 [인증하기](/toss-ads/getting-started/authentication.md)를 참고해 주세요.

 

## 요청

아래 주소로 POST 요청을 보내요.

<mark style="color:green;">**`POST`**</mark> <mark style="color:green;"></mark><mark style="color:green;"><https://oauth2.cert.toss.im></mark><mark style="color:green;">**/token**</mark>

```json
curl -X POST https://oauth2.cert.toss.im/token \
    -H "Content-Type: application/x-www-form-urlencoded" \
    -H "Accept: application/json; charset=UTF-8" \
    -d "grant_type=client_credentials&client_id={client_id}&client_secret={client_secret}&scope={scope}"
```

`-d` 뒤에 오는 값이 요청 본문이에요. 필드를 `&`로 이어 붙인 형식이에요. 중괄호(`{ }`)로 표시한 자리에 아래 값을 넣어 주세요.

<table><thead><tr><th width="175.881103515625">필드</th><th width="136.357666015625">타입</th><th width="105.990478515625">필수</th><th>설명</th></tr></thead><tbody><tr><td><code>grant_type</code></td><td>string</td><td>O</td><td>토큰을 발급받는 방식(OAuth2 grant type)이에요. 항상 <code>client_credentials</code>를 넣어 주세요.</td></tr><tr><td><code>client_id</code></td><td> string</td><td>O</td><td>광고주센터에서 발급받은 Client ID예요.</td></tr><tr><td><code>client_secret</code></td><td>string</td><td>O</td><td>광고주센터에서 발급받은 Client Secret이에요.</td></tr><tr><td><code>scope</code></td><td>string</td><td>O</td><td><p>요청할 권한 범위예요. 호출할 API에 필요한 권한을 넣어 주세요.</p><p>여러 개를 요청하려면 공백으로 구분해 주세요.<br>예: <code>ads:report.read ads:report.write</code></p></td></tr></tbody></table>

## 응답

발급에 성공하면 아래와 같은 응답을 받아요.

```json
{
"access_token": "{발급된 access token}",
"scope": "ads:report.read",
"token_type": "Bearer",
"expires_in": 31535999
}
```

<table><thead><tr><th width="175.881103515625">필드</th><th width="136.357666015625">타입</th><th>설명</th></tr></thead><tbody><tr><td><code>access_token</code></td><td>string</td><td>발급된 Access Token이에요. API를 호출할 때 사용해요.</td></tr><tr><td><code>scope</code></td><td>string</td><td>요청한 권한 범위예요.</td></tr><tr><td><code>token_type</code></td><td>string</td><td>토큰 타입이에요.</td></tr><tr><td><code>expires_in</code></td><td>integer</td><td>토큰의 유효 기간이에요. 초 단위예요.</td></tr></tbody></table>


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