Authentication

Factoring Decline API v1 uses an API key assigned to your merchant account.

Send the API key in the X-Api-Key request header.

Header format

X-Api-Key: YOUR_API_KEY
Content-Type: application/json
Accept: application/json

Where to find your API key

Open the API documentation page in the merchant portal:

https://factoring.ltvx.dev/api-docs/factoring-v1

In API Request Parameters, copy the API key for the environment you want to use: Live or Sandbox.

Credential fields

The same page also contains account-specific values used in API requests.

Security requirements

Store API keys securely and never expose them in browser-side JavaScript, mobile apps, public repositories, or client-side logs.

If you believe an API key has been exposed, contact your account manager to rotate credentials.