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Agent-first commerce

Send your AI agent to order cake

We’re a real family bakery in Sugar Land — and a storefront built for the agent era. Your AI assistant can read our live menu and place a genuine order on your behalf.

1

Discover

Your agent reads /llms.txt and /api/menu to learn the catalog and rules — no scraping, no guessing.

2

Compose

It maps your request ("a Honey cake for Saturday") to a canonical SKU and builds a create_order payload.

3

Order

It POSTs to /api/order with an Idempotency-Key. Custom or large orders escalate to our team automatically.

4

Confirm

We return a confirmation_text — carrying the allergen disclaimer — for your agent to relay back to you.

Discovery endpoints

/llms.txt

Plain-text guide for LLMs, with an example order payload.

→

/agents.json

Machine manifest of available actions and endpoints.

→

/openapi.json

OpenAPI 3.1 schema — import us as a tool.

→

/api/menu

Live catalog: SKUs, prices, sizes, allergens.

→

Place an order in one request

POST https://api.happycake.io/api/order

curl -X POST https://api.happycake.io/api/order \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "customer": "Amira Khan",
    "phone": "+18325551234",
    "items": [
      { "sku": "honey-cake-whole", "qty": 1 }
    ],
    "fulfillment": "pickup",
    "datetime": "2026-06-14T14:00:00-05:00",
    "channel": "web"
  }'

The response includes an order_id, status, total, and a confirmation_text to relay verbatim — it carries the mandatory allergen disclaimer.

Prefer to do it yourself? That works too.

Order online