Commerce Checkout

Commerce Checkout

Run cart creation and checkout flows from start to finish.

How It Works

1. Create or locate a cart for a customer by email or customer_id.
2. Add or update cart items with sku, quantity, and price.
3. Set shipping address and fetch available shipping rates.
4. Set payment method and apply any discount codes.
5. Complete checkout to create an order.

Usage

• CLI: stateset-checkout ... or stateset "create cart for customer@example.com"
• Writes require --apply.
• MCP tools: create_cart, add_cart_item, update_cart_item, remove_cart_item, set_cart_shipping_address, set_cart_payment, apply_cart_discount, get_shipping_rates, complete_checkout.

Permissions

• Read: get_shipping_rates — no --apply needed.
• Write: create_cart, add_cart_item, update_cart_item, remove_cart_item, set_cart_shipping_address, set_cart_payment, apply_cart_discount, complete_checkout — requires --apply.

Examples

stateset checkout create-cart --customer cust_123 --apply
stateset checkout add-item cart_123 --sku WIDGET-001 --qty 2 --apply
stateset checkout apply-discount cart_123 --coupon SAVE10 --apply
stateset checkout complete cart_123 --apply

Status Flows

Cart: Open -> Shipping Set -> Payment Set -> Completed (or Abandoned)

Output

{"status":"completed","cart_id":"cart_123","order_number":"ORD-12345","subtotal":199.98,"tax":14.50,"shipping":9.99,"discount":20.00,"total":204.47}

Present Results to User

• Cart and order identifiers created.
• Totals breakdown (subtotal, tax, shipping, discounts, total).
• Any missing fields needed to finalize checkout.
• Shipping method selected and estimated delivery.

Troubleshooting

• Missing shipping/payment: collect required fields before calling complete_checkout.
• Coupon rejected: validate promotion rules, dates, and cart minimum via commerce-promotions.
• Item out of stock: check available quantity via commerce-inventory before adding.
• Cart expired: carts may be abandoned after inactivity; create a new one.

Error Codes

• CART_INCOMPLETE: Required fields (shipping or payment) missing at checkout.
• COUPON_INVALID: Discount code is expired, exhausted, or does not meet cart minimum.
• ITEM_OUT_OF_STOCK: SKU quantity unavailable when completing checkout.

Related Skills

• commerce-products — product catalog for cart items
• commerce-tax — tax calculation applied at checkout
• commerce-promotions — discount codes and cart promotions
• commerce-payments — payment processing on checkout completion

References

• references/checkout-flow.md
• /home/dom/stateset-icommerce/cli/.claude/skills/commerce-checkout/SKILL.md
• /home/dom/stateset-icommerce/examples/workflows.md