Stripe — official references

• openapi-spec3.json — THE complete API spec (github.com/stripe/openapi): every endpoint, parameter and object. Canonical source.
• stripe-php-README.md / CHANGELOG — official PHP SDK (github.com/stripe/stripe-php).
• Laravel side: Cashier = laravel/billing.md (already in the Laravel manual).
• Prose guides (docs.stripe.com): NO GitHub mirror — read online, never from memory.