How do I add billing to my Go app?

Install the Commet SDK, add your API key, and start billing. Follow the [Go integration guide](/docs/integrate-with-go) for a step-by-step walkthrough with code examples.

Commet

Add billing with
Go

Start billing for free Read docs

Built for Go

Billing that fits your stack

The Go SDK is idiomatic — context-aware, struct-based params, and proper error handling. Works with net/http, Gin, Chi, or any Go HTTP framework.

billing/handlers.go

package main

import (
	"encoding/json"
	"net/http"

	commet "github.com/commet-labs/commet-go"
)

func Subscribe(w http.ResponseWriter, r *http.Request) {
	var req struct {
		Email      string `json:"email"`
		CustomerID string `json:"customer_id"`
	}
	json.NewDecoder(r.Body).Decode(&req)

	client.Customers.Create(r.Context(), &commet.CreateCustomerParams{
		Email: req.Email,
		ID:    req.CustomerID,
	})

	sub, _ := client.Subscriptions.Create(r.Context(), &commet.CreateSubscriptionParams{
		CustomerID: req.CustomerID,
		PlanCode:   "pro",
	})

	json.NewEncoder(w).Encode(map[string]any{
		"checkout_url": sub.Data["checkout_url"],
	})
}

package main

import (
	"encoding/json"
	"net/http"

	commet "github.com/commet-labs/commet-go"
)

func Subscribe(w http.ResponseWriter, r *http.Request) {
	var req struct {
		Email      string `json:"email"`
		CustomerID string `json:"customer_id"`
	}
	json.NewDecoder(r.Body).Decode(&req)

	client.Customers.Create(r.Context(), &commet.CreateCustomerParams{
		Email: req.Email,
		ID:    req.CustomerID,
	})

	sub, _ := client.Subscriptions.Create(r.Context(), &commet.CreateSubscriptionParams{
		CustomerID: req.CustomerID,
		PlanCode:   "pro",
	})

	json.NewEncoder(w).Encode(map[string]any{
		"checkout_url": sub.Data["checkout_url"],
	})
}

Get started

Install in seconds

Install the Commet Go SDK and start billing. Subscriptions, usage tracking, and checkout with net/http or any Go framework.

Get started Documentation

Terminal

go get github.com/commet-labs/commet-go

go get github.com/commet-labs/commet-go

Frequently Asked Questions

Install the Commet SDK, add your API key, and start billing. Follow the Go integration guide for a step-by-step walkthrough with code examples.

Commet supports metered (pay for what you use), credits (block when exhausted), balance (spend across features), seats (per-user pricing), and boolean (feature gating). Learn more in the consumption models guide.

Yes. Call the usage tracking method whenever a billable event happens. Commet aggregates usage and bills it at the end of each billing period. Works for API calls, AI tokens, storage, or any custom metric. See the usage tracking guide for details.

Yes. Commet has a built-in AI model catalog with per-token pricing. You can track input, output, and cache tokens with configurable margins. See the AI token billing guide for setup instructions.

Yes. Commet is a Merchant of Record that handles taxes, compliance, refunds, and payouts. Stripe Tax is integrated for automatic tax calculation. Read more about the Merchant of Record model.

Commet has no setup fees and no monthly minimums. You only pay 4.5% + $0.40 per successful transaction. You can start building and testing for free using the sandbox environment. See pricing for details.

Start billing in minutes

No setup fees. No monthly minimums. 4.5% + $0.40 per successful transaction.

Start billing for free

package main

import (

"encoding/json"

"net/http"

commet "github.com/commet-labs/commet-go"

)

func Subscribe(w http.ResponseWriter, r *http.Request) {

var req struct {

Email string `json:"email"`

CustomerID string `json:"customer_id"`

}

json.NewDecoder(r.Body).Decode(&req)

client.Customers.Create(r.Context(), &commet.CreateCustomerParams{

Email: req.Email,

ID: req.CustomerID,

})

sub, _ := client.Subscriptions.Create(r.Context(), &commet.CreateSubscriptionParams{

CustomerID: req.CustomerID,

PlanCode: "pro",

})

json.NewEncoder(w).Encode(map[string]any{

"checkout_url": sub.Data["checkout_url"],

})

}

package main

import (

"encoding/json"

"net/http"

commet "github.com/commet-labs/commet-go"

)

func Subscribe(w http.ResponseWriter, r *http.Request) {

var req struct {

Email string `json:"email"`

CustomerID string `json:"customer_id"`

}

json.NewDecoder(r.Body).Decode(&req)

client.Customers.Create(r.Context(), &commet.CreateCustomerParams{

Email: req.Email,

ID: req.CustomerID,

})

sub, _ := client.Subscriptions.Create(r.Context(), &commet.CreateSubscriptionParams{

CustomerID: req.CustomerID,

PlanCode: "pro",

})

json.NewEncoder(w).Encode(map[string]any{

"checkout_url": sub.Data["checkout_url"],

})

}

Add billing withGo

Billing that fits your stack

Install in seconds

Frequently Asked Questions

Start billing in minutes

Add billing withGo

Billing that fits your stack

Install in seconds

Frequently Asked Questions

Start billing in minutes

Add billing with
Go

Add billing with
Go