The Melio Payments API is currently in private beta. Access is granted to approved partners so we can support each integration closely and shape the product together. Getting in starts with a short application.
Apply for beta access
The first step is a quick application telling us who you are and what you’re building.Apply for beta access
Fill out the beta registration form - it takes just a few minutes.
From application to API key
Here’s the full journey, from applying to building live:1
Apply
Submit the beta registration form. We review every application.
2
Application review
Our team reviews your application to understand your use case and fit for the beta. We’ll email you the next step - and may ask for a little more detail.
3
Discovery call
A short call with our team to talk through what you’re building, who you’ll pay, your expected volume, and your timeline. It’s also your chance to ask us anything.
4
Onboarding
You accept the Melio API Agreement (along with the Privacy Policy and Terms of Service), and we set up your account so you’re ready to build.
5
Build in staging
We securely deliver your staging API key. Integrate against the test environment and run at least one test payment to confirm everything works end to end. We’ll be in close contact throughout.
6
Go live
When you’re ready, share your integration and payment flow with us for a quick approval. Once approved, we issue your production API key - and you’re live.
During the beta you work directly with our team, and your feedback shapes what we build next. We keep a regular sync going so you’re never stuck.
Once you’re in
Introduction
The big picture - core concepts, environments, and how the pieces fit.
Authentication
Use your API key to authenticate requests.
Payments
Amounts, delivery preferences, and the payment lifecycle.