Pricing
One simple API, two tiers.
Free
For exploring the API and personal projects.
$0/month
- 60 requests/minute
- All supported formats (Factur-X/CII, UBL 2.1)
- Access to the online validation site
- Full OpenAPI specification
Pro
For production integrations.
$490/month
- 600 requests/minute
- All supported formats (Factur-X/CII, UBL 2.1)
- Priority email support
- License key valid across all your environments
The Pro tier is activated with a license key passed in the Authorization: Bearer <key> HTTP header of your API requests. No account, no database: the key is validated on the fly against LemonSqueezy.
Frequently asked questions
How do I get a Pro key?
Contact us at [email protected] — self-service checkout is being rolled out.
Can I use the online validation tool for free?
Yes, the validation site remains free with no signup, regardless of your API tier.
What happens if my Pro key expires?
Your requests automatically fall back to the free rate limit (60 req/min) with no service interruption.