> For the complete documentation index, see [llms.txt](https://docs.january.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.january.ai/docs/overview.md).

# Overview

January's developer platform provides one API for food search, food analysis, food, water, and weight logging, restaurant discovery, and sensor-free glucose prediction.

## Choose where to begin

* Follow the [Quickstart](/docs/quickstart.md) to make your first request.
* Connect a coding agent with the [MCP server](/docs/mcp-server.md).
* Read [How authentication works](/docs/authentication.md) before deciding where your app's credentials live.
* Explore the [REST API reference](/rest-api/api-overview.md) for every endpoint and schema.
* Choose the [iOS](/client-sdks/ios-sdk/overview.md), [Android](/client-sdks/android-sdk/overview.md), [React Native](/client-sdks/react-native-sdk/overview.md), or [Web](/client-sdks/web-sdk/overview.md) SDK for client applications.

## API base URL

All REST requests use:

```
https://partners.january.ai
```

Paths start with the API version, `/v1.2`; for example, `https://partners.january.ai/v1.2/foods`. Every request uses HTTPS and carries a bearer credential. [API v1.1](/rest-api/v1-1-legacy.md) is the legacy version.

## Typical integration

1. Create an API key in the [January Developer Dashboard](https://dashboard.january.ai) and keep it on your backend.
2. Call January from your backend with the key, or add a [token endpoint](/docs/authentication.md#your-token-endpoint) so your apps can call January with short-lived client tokens.
3. Identify each person with a stable [end-user ID](/docs/authentication.md) for operations on that person's data, such as food, water, and weight logs.

Continue with the [Quickstart](/docs/quickstart.md) to try a food search.