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Forest Commerce Purchase Preflight
x402
Forest Commerce Purchase Preflight is a paid API for AI agents from http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-22).
Validates whether a specific product variant can be purchased and shipped to a destination, returning price, availability, and shipping options before committing to a transaction.
Price / call$0.006
Success—
StatusUnknown
How this service works
Machine-readable contract for active Forest paid capabilities. Unsigned paid calls return HTTP 402 with a PAYMENT-REQUIRED x402 challenge.
Output
Returns a structured preflight object indicating whether the product is available (state: ready/blocked), a list of blockers if any, item price, subtotal, accepted quantity, available shipping options with names/prices/delivery dates, cheapest shipping option, whether delivery is possible to the given destination, and a checkout URL if a cart is possible. Also includes metadata about provider (e.g. shopify-ajax), cache status, and response duration.
Example use cases
Pre-purchase shipping validation
“Can you check if I can order 3 of variant 'SKU-ABC-789' from https://store.example.com/products/backpack and get it shipped to postal code 90210 in the US — and what are the shipping options?”
Availability check before gifting
“I want to send a gift to someone in Canada, postal code M5H 2N2 — can you verify that variant 'variant-red-large' at https://gifts.example.com/products/candle is actually available and shippable there, and what it would cost?”
Agent cart validation before checkout
“Before trying to add it to cart, check whether 1 unit of variant 'prod_987xyz' from https://boutique.example.com/products/dress can be purchased and shipped to 33101 in the US, and tell me if there are any blockers.”
Technical details
Endpoint
POSThttps://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/commerce/purchase-preflight?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to validate purchase feasibility for a specific product variant before attempting checkout — especially when you need to confirm shipping availability to a specific country/postal code, check quantity limits, identify blockers, and surface shipping cost options. Prefer this over scraping a product page when you need structured, machine-readable preflight data including checkout URLs and shipping quotes. Best suited for Shopify-backed storefronts.
Side effects
- Invalid or unreachable product URL returns error or blockers in response
- Variant ID not found at the provider results in blockers or unavailable state
- Destination country/postal code unsupported for shipping returns deliverable: false
- Quantity exceeds provider limit (max 100) returns validation error
- Missing required fields (url, country, postal_code) returns 400 Bad Request
- Unsigned payment call returns HTTP 402 with x402 PAYMENT-REQUIRED challenge
- Provider (Shopify) timeout or rate limit may cause elevated duration_ms or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public HTTP(S) URL to inspect, resolve, or compare. |
| quantity | integer | Requested item quantity to validate against provider limits. |
| variant_id | string | Public provider variant identifier to validate. |
| destination | object | Delivery country and postal code used to quote delivery availability. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"data": {
"scope": "anonymous_bounded_preflight_not_purchase_guarantee",
"state": "ready",
"blockers": [],
"currency": "example",
"platform": "example",
"subtotal": 1,
"item_price": 1,
"deliverable": false,
"checkout_url": "example",
"canonical_url": "example",
"cart_possible": false,
"session_scope": "request_scoped_ephemeral",
"delivery_checked": false,
"shipping_options": [],
"accepted_quantity": 1,
"cheapest_shipping": {
"name": "example",
"price": 1,
"currency": "example",
"max_delivery_date": "example",
"min_delivery_date": "example"
},
"checkout_possible": false,
"order_not_created": true,
"delivery_requested": false,
"requested_quantity": 1,
"selected_variant_id": "example",
"payment_not_attempted": true,
"shipping_option_count": 0,
"provider_request_count": 0,
"customer_session_touched": false
},
"meta": {
"cache": "miss",
"provider": "shopify-ajax",
"checked_at": "2026-01-01T00:00:00.000Z",
"duration_ms": 0
},
"version": "1",
"capability": "commerce.purchase-preflight"
}
}Tags
x402
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