GitHub sign-in, API key, and Stripe self-serve billing.
Start GitHub OAuth. On return you get a session cookie and a personal API key (free tier) attached to your account.
Redirect to GitHub.
Your login, tier, API key, base URLs, and recent usage. Requires the session cookie from sign-in.
Account.
login
tier
apiKey
Create a Stripe Checkout session for {tier: pro|business, cycle: monthly|annual}. On completion your API key is moved onto the tier usage plan.
Checkout URL.
url