# OpenWeb Ninja — Realtime Web Search SERP API (x402)

> OpenWeb Ninja — Realtime Web Search SERP API (x402) is a paid API for AI agents from x402.openwebninja.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Fetches real-time web search engine results pages (SERP) for a given query, payable per call via x402 USDC with no API key required.

## Facts

- Endpoint: GET https://x402.openwebninja.com/realtime-serp-data/web/search
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openweb-ninja-realtime-web-search-serp-api-x402-6d026b71
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oGILjRUBeZThxs4goNsZx

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 openweb-ninja-realtime-web-search-serp-api-x402-6d026b71
```

Example prompt: Search the web for 'best electric vehicles 2025' and give me the top results including titles, URLs, and snippets — I don't have an API key, just pay per call.

## When to prefer this

Choose this endpoint when you need real-time, live web search results without registering an account or obtaining an API key, and when you want to pay micro-amounts per call (≈$0.003 USDC) rather than committing to a subscription. Ideal for AI agents operating autonomously that need to access current web information on demand using crypto micropayments via x402 on Base, Polygon, or Arbitrum.

## Known failure modes

- Missing or empty query parameter returns an error or empty results
- Payment failure via x402 (insufficient USDC balance or unsupported chain) blocks the request
- Rate limiting if too many calls are made in quick succession
- Malformed query string may return unexpected or no results
- Search engine may return no results for very obscure queries

## How this service works

40+ public web-data, SERP, e-commerce, real-estate, finance and AI-search APIs, payable per call over x402 (USDC on Base, Polygon, Arbitrum). No account or API key required. Most endpoints $0.003; AI-model endpoints $0.005.

## Output

Returns a JSON object containing real-time web SERP results for the queried keywords, typically including organic result titles, URLs, snippets/descriptions, and potentially pagination or metadata about the search.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openweb-ninja-realtime-web-search-serp-api-x402-6d026b71/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.openwebninja.com](https://www.zero.xyz/host/x402.openwebninja.com/llms.txt)