Authentication

Every request to the Invoice Falcon API must include your store's API key in the X-Auth-Token header.

Obtaining your API key

1. Open the Invoice Falcon app from your Shopify admin.
2. Go to Settings > Integrations.
3. Click Generate API key.

Your key will look like if_api_key_ followed by a random hex string.

Using the key

Include the header in every request:

curl -H "X-Auth-Token: if_api_key_abc123..." \
  https://app.invoicefalcon.com/api/v1/external/invoices

Security

• Keep your key secret. Do not expose it in client-side code or public repositories.
• You can regenerate your key from the same Settings page if you suspect it has been compromised. This immediately invalidates the previous key.
• Each API key is scoped to a single Shopify store.