The billing SDK behind Planter.
GardenKit is the typed SDK for Garden billing — checkout, usage metering, invoices, payment methods, addresses, and signed webhooks. Planter is its drop-in UI layer: everything the SDK exposes, rendered as one mountable drawer.
Ten calls. Complete billing.
garden.checkout.create(...)Hosted or embedded checkout sessions.
garden.portal.link(...)Signed link to the customer billing portal.
garden.usage.ingest(...)Record usage events, idempotency-keyed.
garden.meter.ingest(...)Push metered quantities per platform.
garden.meters.listForCustomer(...)Read live meters + included/limit.
garden.invoices.list(...)Invoices with platform-attributed lines.
garden.paymentMethods.list(...)Account-shared cards, bank, crypto.
garden.addresses.upsert(...)Billing address + tax IDs.
garden.webhooks.verify(...)Verify signed event envelopes.
garden.webhooks.route(...)Route events to your handlers.
Meter, bill, and get paid.
Idempotent everywhere. Typed end to end. The same contract Planter renders.
import { createGarden } from "@l1fe/garden";
const garden = createGarden({ platformId: "hives" });
// Meter usage as it happens
await garden.meter.ingest({
key: "hives.flight.invocation",
quantity: 1,
dimensions: { region: "us-east", flight: "buzz-worker" },
});
// Open embedded checkout for an open invoice
const session = await garden.checkout.create({
invoiceId: "in_207",
mode: "embedded",
});// Signed, replay-safe events from Vine
export async function POST(req: Request) {
const event = await garden.webhooks.verify(req);
await garden.webhooks.route(event, {
"invoice.paid": onPaid,
"invoice.payment_failed": onFailed,
"usage.threshold": onThreshold,
});
return new Response(null, { status: 204 });
}Planter is GardenKit, mounted.
Everything above — rendered. Drop <GardenPlanter /> into any platform and the SDK’s data becomes a premium billing drawer, scoped and themed automatically.
Hives
Atlas Labs · billing
Billing by Garden
Spend this period
$4,980.20
Projected invoice
$5,410.00
Next: Jul 1, 2026
Recent activity
Northstar API
Northstar API · billing
Powered by Garden
Spend this period
$1,290.00
Projected invoice
$2,140.00
Next: Jul 1, 2026
Recent activity
Powered by Garden
Add GardenKit to any stack.
bun add @l1fe/gardenimport "@l1fe/garden/planter.css";
import { GardenPlanter } from "@l1fe/garden/planter";
import {
createGardenPlanterData,
createPlanterCheckoutSession,
} from "@l1fe/garden/planter/server";
The SDK and the UI. Both, today.
GardenKit for the contract. Planter for the surface. Ship billing in an afternoon.