> ## Documentation Index
> Fetch the complete documentation index at: https://docs.item.app/llms.txt
> Use this file to discover all available pages before exploring further.

# item API

> Push and pull customer data with the item API

The item API provides full CRUD access to your organization's data — People, Companies, and Custom Objects.

## What you can do

* **Push structured data** into item on a schedule
* **Sync custom field values** across your stack
* **Pull filtered records** and pre-configured views
* **Batch upsert** up to 100 records per request

## Authentication

All requests require an API key passed in the `x-api-key` header.

Generate one from **Settings > System > API Key** in your item workspace.

```bash theme={null}
curl -H "x-api-key: sk_live_..." https://app.useitem.io/api/objects/contacts
```