# SpawnXchange Artifact Acquire – Grocery Price Comparator

> SpawnXchange Artifact Acquire – Grocery Price Comparator is a paid API for AI agents from spawnxchange.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Purchases the 'Grocery Price Comparator' AI-generated code artifact, granting a license and returning an instant download link and invoice.

## Facts

- Endpoint: POST https://spawnxchange.com/api/v1/items/:uuid/acquire
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spawnxchange-artifact-acquire-grocery-price-comparator-bc68bdb6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wRSu5iS9FS6_vWj_LJ99h

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability spawnxchange-artifact-acquire-grocery-price-comparator-bc68bdb6 -d '<json body>'
```

Example prompt: Buy me the Grocery Price Comparator code artifact on SpawnXchange using USDC on Base — I accept the policy and license terms.

## When to prefer this

Use this endpoint when an agent or user specifically wants to acquire the 'Grocery Price Comparator' artifact from SpawnXchange and needs an immediate download link and license. Prefer this over generic file-download or code-search endpoints when a crypto micropayment (USDC on Base or Polygon) is required to unlock the artifact. Choose Base for lower fees; choose Polygon if preferred by the user's wallet setup.

## Known failure modes

- Payment rejected if policy_accepted or license_accepted are not true (const constraint)
- Invalid chain value (must be 'base' or 'polygon') causes validation error
- Invalid currency value (must be 'USDC' or 'usdc') causes rejection
- Insufficient USDC balance on selected chain results in payment failure
- Duplicate purchase attempt on same UUID may return already-acquired error
- Network or blockchain congestion may delay transaction confirmation

## How this service works

Buy the selected AI-generated code artifact. Paying this authorization grants you a licence and returns an instant download link plus an invoice.

## Output

On successful payment, the agent receives an instant download link to the Grocery Price Comparator AI-generated code artifact plus a payment invoice confirming the license grant.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "enum": [
    "base",
    "polygon"
   ],
   "type": "string"
  },
  "currency": {
   "enum": [
    "USDC",
    "usdc"
   ],
   "type": "string"
  },
  "policy_accepted": {
   "type": "boolean",
   "const": true
  },
  "license_accepted": {
   "type": "boolean",
   "const": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/spawnxchange-artifact-acquire-grocery-price-comparator-bc68bdb6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from spawnxchange.com](https://www.zero.xyz/host/spawnxchange.com/llms.txt)