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

# Introduction

> Overview of the email verification and task status API

## Overview

This API supports email verification and task status checks. Submit an email for verification and use the returned task ID to poll for results.

## Creating an API key

Create and manage your API keys in the Deliverable dashboard:

1. Go to [**API keys**](https://app.deliverable.co/app/api).
2. Sign in or create an account if needed.
3. Create a new API key. Copy and store it securely; it is shown only once.

Use this key in the `x-api-key` header for all API requests.

## Base URL

Use the base URL for your environment (for example, `https://api.deliverable.co` for production). Check the API documentation or your dashboard for the exact URL.

## Authentication

Send your API key in the `x-api-key` header with every request:

```json theme={null}
"security": [
  {
    "apiKeyAuth": []
  }
]
```

### Requirements

* **Valid API key** — Keys are created at [app.deliverable.co/app/api](https://app.deliverable.co/app/api). Invalid or missing keys return `401 Unauthorized`.
* **Active subscription** — Your account must have an active, paid subscription. Expired plans, failed payments, or accounts that require payment return `402 Payment Required`. Renew or update your subscription in the dashboard to restore access.