Go SDK

go get github.com/revkeen/revkeen-go

package main

import (
    "context"

    revkeen "github.com/revkeen/revkeen-go"
    "github.com/revkeen/revkeen-go/option"
)

func main() {
    client := revkeen.NewClient(
        option.WithAPIKey("rk_sandbox_your_api_key"),
    )
    // Use client...
}

client := revkeen.NewClient(
    option.WithAPIKey("rk_sandbox_your_api_key"),
    option.WithBaseURL("https://staging-api.revkeen.com"),
)

session, err := client.CheckoutSessions.Create(context.Background(), &revkeen.CheckoutSessionCreateRequest{
    Mode:       revkeen.CheckoutModePayment,
    CustomerID: "cus_xxxxxxxx",
    SuccessURL: "https://yourapp.com/success",
    CancelURL:  "https://yourapp.com/cancel",
})
if err != nil {
    log.Fatal(err)
}

fmt.Println(session.Data.URL)

subscription, err := client.Subscriptions.Create(context.Background(), &revkeen.SubscriptionCreateRequest{
    CustomerID: "cus_xxxxxxxx",
    ProductID:  "prod_xxxxxxxx",
    TrialDays:  revkeen.Int(14),
})
if err != nil {
    log.Fatal(err)
}

fmt.Println(subscription.Data.ID)

customers, err := client.Customers.List(context.Background(), &revkeen.CustomersListRequest{
    Limit: revkeen.Int(10),
})
if err != nil {
    log.Fatal(err)
}

for _, c := range customers.Data {
    fmt.Println(c.Name, c.Email)
}

_, err := client.Customers.Get(context.Background(), "cus_nonexistent")
if err != nil {
    var apiErr *revkeen.APIError
    if errors.As(err, &apiErr) {
        fmt.Printf("API error %d: %s\n", apiErr.StatusCode, apiErr.Message)
    }
}