action sinao_app_subscription_checkout { label: "Get payment link to Stripe Checkout" provider: sinao method: GET path: "/apps/{appId}/subscription/plans/{stripe_plan}/checkout" encoding: json input: { type: "object" properties: { stripe_coupon: { type: "string" } stripe_plan: { type: "string" } } required: ["stripe_plan"] additionalProperties: false } output: { type: "object" additionalProperties: true } }