# Introduction

1. You need a valid access token to send requests to the API endpoints. You can get one in the [API Access](https://account.harmonycms.net/settings/api) section in your account's settings.
2. Response to every request is sent in [JSON format](https://en.wikipedia.org/wiki/JSON). In case the API request results in an error, it is represented by an `"error": {}` key in the JSON response.
3. The request method (verb) determines the nature of action you intend to perform. A request made using the `GET` method implies that you want to fetch something, and `POST` implies you want to save something new, and so on for the other ones.
4. The API calls will respond with appropriate [HTTP status codes](https://en.wikipedia.org/wiki/List_of_HTTP_status_codes) for all requests. A `200 OK` indicates all went well, while `4XX` or `5XX` response codes indicate an error from the requesting client or our API servers respectively.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://harmonycms.gitbook.io/docs/the-rest-api-reference/introduction.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.