> For the complete documentation index, see [llms.txt](https://docs.iexexchanger.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.iexexchanger.com/get-started/exchanger-api/kak-ustroen-api/base-url-versioning.md).

# Базовый URL и версия

Все endpoints находятся под `/api/v3`.

```
https://{your-domain}/api/v3
```

Пример:

```
https://example.com/api/v3
```

Используйте реальный домен обменника. Не добавляйте `app.` автоматически.

## Типы endpoints

| Тип     | Prefix                 | Авторизация  |
| ------- | ---------------------- | ------------ |
| Public  | `/api/v3/public/*`     | Не нужна     |
| Private | `/api/v3/private/*`    | Bearer token |
| Ping    | `/api/v3/ping`         | Не нужна     |
| OpenAPI | `/api/v3/openapi.yaml` | Не нужна     |

## Почему версия в URL

Версия `v3` в URL нужна, чтобы интеграции не ломались при появлении новых версий API.

Правильно:

```
https://example.com/api/v3/private/exchange/routes
```

Неправильно:

```
https://example.com/private/exchange/routes
https://example.com/api/private/exchange/routes
```

## Headers версии

Ответ может содержать технические headers:

```http
X-Api-Version: v3
X-Api-Envelope-Version: v1
X-Api-Error-Version: v1
X-Api-Webhook-Payload-Version: v1
```

Обычно их не нужно показывать пользователю. Они полезны для диагностики и обращения в поддержку.


---

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