Authentication

All LTX-2 API requests require authentication using API keys. API keys are associated with your account and provide access to the API endpoints.

Getting Your API Key

Contact our team to obtain your API key. Each key is unique to your account and should be kept secure.

Using Your API Key

Include your API key in the Authorization header of every request using the Bearer token format:

$
Authorization: Bearer YOUR_API_KEY

Example Request

$
curl -X POST https://api.ltx.video/v1/text-to-video \
>
  -H "Authorization: Bearer YOUR_API_KEY" \
>
  -H "Content-Type: application/json" \
>
  -d '{
>
    "prompt": "A majestic eagle soaring through clouds",
>
    "model": "ltx-2-pro",
>
    "duration": 8,
>
    "resolution": "1280x720"
>
  }'

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import requests
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headers = {
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    "Authorization": "Bearer YOUR_API_KEY",
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    "Content-Type": "application/json"
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}
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response = requests.post(
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    "https://api.ltx.video/v1/text-to-video",
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    headers=headers,
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    json={
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        "prompt": "A majestic eagle soaring through clouds",
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        "model": "ltx-2-pro",
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        "duration": 8,
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        "resolution": "1280x720"
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    }
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)

Security Best Practices

Environment Variables

Store your API key in environment variables:

Bash:

$
export LTXV_API_KEY="your_api_key_here"

Python:

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import os
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api_key = os.environ.get("LTXV_API_KEY")

Node.js:

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const apiKey = process.env.LTXV_API_KEY;

Authentication Errors

If authentication fails, you’ll receive a 401 Unauthorized response:

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{
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  "type": "error",
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  "error": {
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    "type": "authentication_error",
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    "message": "Invalid API key"
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  }
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}

Common authentication issues:

Rate Limits

API keys are subject to rate limits based on your plan. If you exceed your rate limit, you’ll receive a 429 Too Many Requests response.

Contact our team to discuss rate limit increases for your use case.