Testing Changelly Pay Here

To get it going

create .env file with

BASE_URL=https://api.pay.changelly.com
PRIVATE_KEY=<provdied by changelly>
PUBLIC_KEY=<provided by changelly>

Run it

• first setup node with nvm use
• then create a payment with node create_payment.json
• then to get the payment status use node get_payment.json

Changelly Notes

• The support button is hard to find, they are responsive but not very helpful. They kept redirecting me somewhere. I think this product is a side product to a main product
• Their API does support a redirect flow approach
• Talking to their API is a bit complicated, as it is convoluted way of signing the request.
• They do not have sandbox. They recommend using prod and a network that has small fees, ex TRON
• Payment creation can not be made with EUR/USD. We have to create them with crypto currency.
• The dashboard will only support USD. EUR is on the roadmap
• We can override success/fail redirect URL but NOT the callback URL. This means that only one env will be functional. Or we create a second account.
• We can not fetch payments by our own ID but only by their Payment ID. This means we would have to store it.
• There is not any kind of idempotency going on. You can create the same payment with the same arguments over and over.
• Dashboard is kind of poor in the sense that you can not do much with it. You can not cancel a payment or anything like that. Or issue a new order from the dashboard.
• Once the vendor goes through a cypto selection they are locked into it. Clicking on the link again does not offer to choose again
• I'm not sure when do payments expire, I used the pending_deadline_at parameter but does not seem to work. At least I did not recieve a callback in due time.
• By default the account is custodial and we need to withdraw manually (at least is how it looks like)
• I did not test callbacks, cause no test site.
• The documentation is good enough to understand what is going on. It is generated from Redocly