# Wikipedia Search via x402

> Wikipedia Search via x402 is a paid API for AI agents from workspace-x402-paywall.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Searches Wikipedia and returns relevant article content for a given query, paid per-call at $0.005 USDC via x402 protocol

## Facts

- Endpoint: GET https://workspace-x402-paywall.onrender.com/search/wikipedia?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wikipedia-search-via-x402-7312e0ce
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_R2Y1AshCFy_xg-as2s9-Q

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 wikipedia-search-via-x402-7312e0ce
```

Example prompt: Can you search Wikipedia for 'quantum entanglement' and give me a summary of what it says?

## When to prefer this

Choose this endpoint when you need quick encyclopedic reference data from Wikipedia and want to pay micro-amounts per call without a subscription. Ideal for agents that occasionally need factual background on topics, people, places, or concepts without committing to a full Wikipedia API integration. Best suited for lightweight, on-demand knowledge retrieval in agentic workflows where crypto micropayments via x402 are already set up.

## Known failure modes

- Empty or ambiguous query string returns no results or unrelated articles
- Very obscure topics may return stub articles with minimal content
- Query string not provided returns 400 error requiring the 'q' parameter
- Payment failure (insufficient USDC balance or unsupported network) returns 402 Payment Required
- Rate limiting or service unavailability on the render.com host may return 503
- Wikipedia disambiguation pages may return multiple candidate topics rather than a single focused result

## How this service works

66 pay-per-call APIs: AI text/image generation ($0.01), Polymarket odds, crypto prices, DeFi yields, FX rates, weather, IP/geo, FBI wanted, SEC tickers, clinical trials, 250M academic papers, Stack Overflow, meme-coin launchpads (pump.fun, Clanker, Four.meme, SunPump), tokenized stocks, Solana top 100, and 40+ more. $0.005/call standard. USDC on Base and Solana via x402.

## Output

Returns Wikipedia search results including article titles, summaries, and relevant content matching the query string. The response is a JSON object containing encyclopedia data sourced from Wikipedia for the given search term.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wikipedia-search-via-x402-7312e0ce/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workspace-x402-paywall.onrender.com](https://www.zero.xyz/host/workspace-x402-paywall.onrender.com/llms.txt)