@glideco/acp-merchant

npm install @glideco/acp-merchant

// apps/web/src/app/api/acp/agentic_checkout/route.ts
import { handleAgenticCheckout, ACP_VERSION_HEADER, ACP_SPEC_VERSION } from '@glideco/acp-merchant';

export async function POST(req: Request) {
  const body = await req.json();
  // Per spec: prefer header, fall back to body field for legacy clients
  const idempotencyKey = req.headers.get('Idempotency-Key') ?? body.idempotencyKey;

  const response = await handleAgenticCheckout(
    { ...body, idempotencyKey },
    {
      async loadByIdempotencyKey(key) {
        return db.query.acpCheckouts.findFirst({ where: eq(schema.acpCheckouts.idempotencyKey, key) });
      },
      async storeForIdempotency(key, checkout) {
        await db.insert(schema.acpCheckouts).values({ ...checkout, idempotencyKey: key });
      },
      async mintPaymentIntent(cart, buyer) {
        // Creates a Stripe SPT or Glide x402/MPP payment intent
        return smartRouter.createPaymentIntent({ cart, buyer });
      },
    }
  );

  return Response.json(response, {
    headers: { [ACP_VERSION_HEADER]: ACP_SPEC_VERSION },
  });
}

import { recomputeCartSubtotal, validateCartTotal } from '@glideco/acp-merchant';

// Recompute subtotal from line items (ignores buyer-supplied subtotal)
const computed = recomputeCartSubtotal(cart);

// Check the total = subtotal + shipping + tax - discount
const cartError = validateCartTotal(cart);
if (cartError) {
  return Response.json(cartError, { status: 400 });
}