# QuantaFlow Yahoo SERP Search via x402

> QuantaFlow Yahoo SERP Search via x402 is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).

Performs a Yahoo search engine results page (SERP) query and returns results, paid per-call via the x402 micropayment protocol.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/serp-yahoo?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-yahoo-serp-search-via-x402-a5d252f4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v0mMibDMFOuu_g1xxeeBN

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 quantaflow-yahoo-serp-search-via-x402-a5d252f4 -d '<json body>'
```

Example prompt: Search Yahoo for 'best electric vehicles 2025' and give me the top results — I want to see what's ranking right now.

## When to prefer this

Choose this endpoint when you need Yahoo-specific SERP data (distinct index and ranking from Google/Bing), want pay-per-call pricing via x402 micropayments with no subscription, or are building a crypto-native or DeFi-adjacent agent workflow where on-chain micropayments are preferred over API key management.

## Known failure modes

- Payment failure: x402 payment not accepted or USDC balance insufficient, resulting in 402 Payment Required response
- Invalid query: malformed or empty search query returns error from upstream Yahoo
- Rate limiting: upstream Yahoo SERP API throttles excessive requests
- Upstream unavailability: Yahoo SERP service downtime causes 502/503 passthrough
- Malformed request: incorrect path or query object structure causes gateway rejection

## How this service works

Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.

## Output

The upstream Yahoo SERP response is passed through directly after successful x402 payment — typically structured JSON or HTML containing organic search listings, titles, URLs, snippets, and potentially ads or featured results depending on the upstream Yahoo SERP API format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "body": {
   "type": "string",
   "description": "Optional JSON body forwarded to POST requests."
  },
  "path": {
   "type": "string",
   "description": "Path below the selected upstream origin."
  },
  "query": {
   "type": "object"
  },
  "method": {
   "enum": [
    "GET",
    "POST"
   ],
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "description": "The upstream response body and content type are passed through after successful payment."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quantaflow-yahoo-serp-search-via-x402-a5d252f4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from quanta-roan.vercel.app](https://www.zero.xyz/host/quanta-roan.vercel.app/llms.txt)