# Data Vending — Retail Ontology Subtree Dataset

> Data Vending — Retail Ontology Subtree Dataset is a paid API for AI agents from data-vending.869biz.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Downloads a structured retail ontology subtree dataset (nodes, edges, roots) as clean JSON, payable via x402 USDC micropayment with no signup or API key required.

## Facts

- Endpoint: GET https://data-vending.869biz.com/v1/datasets/retail.ontology_subtree.v1/download
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/data-vending-retail-ontology-subtree-dataset-74910616
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6pp7I5R12aW8X6Cobb_w7

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 data-vending-retail-ontology-subtree-dataset-74910616
```

Example prompt: Can you download the retail ontology subtree dataset from Data Vending using my Base USDC wallet? I have a quote ID ready — get me the nodes, edges, and roots as JSON.

## When to prefer this

Choose this endpoint when an AI agent needs structured retail product taxonomy or category hierarchy data in clean JSON format without requiring account registration, and is capable of executing x402 USDC micropayments programmatically. Ideal for agents enriching product catalogs, training classifiers, or building retail knowledge graphs.

## Known failure modes

- Invalid or expired quote_id returns payment/auth error
- Unsupported rail_id value (not solana-usdc or base-usdc) causes rejection
- Payment not confirmed on-chain causes 402 or access denial
- Malformed request body returns 400 bad request
- Network or server downtime returns 5xx error

## How this service works

HTTP-native dataset vending for autonomous AI agents. No signup, no API key — discover, pay USDC via x402, get clean JSON. Human-designed data with provenance and conservation revenue share.

## Output

A JSON object containing the retail ontology subtree with fields: sku (retail.ontology_subtree.v1), edges (ontology edge relationships), nodes (ontology node definitions), roots (top-level ontology root nodes), and score_date (dataset freshness date, e.g. 2026-06-06).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "rail_id": {
   "type": "string",
   "description": "Payment rail: solana-usdc or base-usdc"
  },
  "quote_id": {
   "type": "string",
   "description": "Quote id from GET .../quote"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "retail.ontology_subtree.v1",
  "edges": "...",
  "nodes": "...",
  "roots": "...",
  "score_date": "2026-06-06"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/data-vending-retail-ontology-subtree-dataset-74910616/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from data-vending.869biz.com](https://www.zero.xyz/host/data-vending.869biz.com/llms.txt)