---
title: "Authentication — AVCodex Docs"
description: "Authentication — AVCodex documentation for AV integrators, programmers, and ops teams."
lang: en
json-ld:
---

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# Authentication

Last updated · MAR 2026 · [Read as Markdown](/docs/api/authentication.md)

> **Note:** API access requires a Builder plan or higher. Free accounts cannot access the API. [Upgrade to Builder](https://app.avcodex.com/plans)

## [Getting your API key# ](#getting-your-api-key)

1.  Log into [app.avcodex.com](https://app.avcodex.com).
2.  Navigate to your agent.
3.  Click **Share** in the sidebar.
4.  Find the "Share via API" section.
5.  Click the eye icon to reveal your API key.
6.  Copy your API key.

> **Tip:** The Share tab includes a ready-to-use curl example with your agent's model name. Click the copy button to get a working request with your API key included.

## [Using your API key# ](#using-your-api-key)

Include your API key in the Authorization header:

bash 

```
Authorization: Bearer YOUR_API_KEY
```

### [Example# ](#example)

bash 

```
curl https://app.avcodex.com/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "myagent-123",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
```

## [Required headers# ](#required-headers)

Header

Value

`Authorization`

`Bearer YOUR_API_KEY`

`Content-Type`

`application/json`

## [Error responses# ](#error-responses)

### [Authentication errors (401)# ](#authentication-errors-401)

json 

```
{
  "error": "Missing API key"
}
```

No Authorization header provided.

json 

```
{
  "error": "Invalid API key"
}
```

The API key is incorrect or does not match the agent.

json 

```
{
  "error": "This API is only available on a paid plan.  Visit your dashboard to upgrade."
}
```

Free accounts cannot access the API. Requires Builder plan or higher.

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On this page

-   [Getting your API key](#getting-your-api-key)
-   [Using your API key](#using-your-api-key)
-   [Example](#example)
-   [Required headers](#required-headers)
-   [Error responses](#error-responses)
-   [Authentication errors (401)](#authentication-errors-401)

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