At this time, the Billing & Usage page in the Dev Console is only intended to be used for the Crossmint Minting API.
You do NOT need to add payment information or buy credits if you're:
- Integrating Crossmint's Credit Card Checkout (aka "Payments")
- Integrating Crossmint's Cross-chain Payments (aka "Payments")
- Buying NFTs using Crossmint, as a customer
- Integrating ANY other Crossmint services other than the Minting API
Screenshot of the Crossmint Developer Console's Billing & Usage page.
Find more info on the Minting API here.