# Stride20k Wikipedia Knowledge Lookup

> Stride20k Wikipedia Knowledge Lookup is a paid API for AI agents from gateway.stride20k.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Fetches a normalized Wikipedia article summary by title, returning extract, description, page URL, and thumbnail via pay-per-call x402 USDC payment

## Facts

- Endpoint: GET https://gateway.stride20k.com/knowledge/wiki/%7Btitle%7D
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stride20k-wikipedia-knowledge-lookup-8b4fc1b4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BWnUhXkLg1bmqzgtNGLqP

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 stride20k-wikipedia-knowledge-lookup-8b4fc1b4
```

Example prompt: Can you pull the Wikipedia summary for Alan Turing — I need his short description, the main extract, and a link to his Wikipedia page?

## When to prefer this

Choose this endpoint when you need structured, schema-stable Wikipedia summaries (extract, description, thumbnail, Wikibase ID) in a single pay-per-call request with no API key setup. Prefer it over raw Wikipedia REST API calls when you want normalized JSON with consistent fields, or when operating in an x402 USDC payment environment with other Stride20k data endpoints (crypto prices, DeFi, DNS, etc.) and want a unified gateway. Not ideal if you need full article wikitext, revision history, or multi-language batch lookups.

## Known failure modes

- Article not found for the given title returns an error or empty data
- Ambiguous title may return an unexpected article — agent should verify title matches intended subject
- Non-English titles may need exact Wikipedia spelling to resolve correctly
- Network or upstream Wikipedia API outage may cause fetch failure
- Payment failure via x402 protocol will block the request before it reaches Wikipedia

## How this service works

Agent data gateway plus the live x402 market feed. Normalized, schema-stable JSON for crypto prices, DeFi TVL, on-chain DEX pools, gas, FX, US Treasury yields, US weather, WHOIS, DNS, email validation, web-page extraction, tech news, Wikipedia, npm/PyPI package health, ERC-20 token-risk scoring, and composed domain dossiers, plus x402 ecosystem analytics and metered LLM inference. Pay per call with USDC via the x402 protocol; no accounts, no API keys.

## Output

Returns a JSON object with ok:true and a data object containing: kind (e.g. 'standard'), language, title, a plain-text extract (summary paragraph), a short description, the canonical Wikipedia page URL, a thumbnail image URL, and the Wikibase item ID. Also includes metadata: whether the result was cached, the source name, the fetch timestamp, and CC BY-SA 4.0 attribution notice.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "data": {
   "kind": "standard",
   "lang": "en",
   "title": "Alan Turing",
   "extract": "Alan Mathison Turing was an English mathematician, computer scientist, logician, cryptanalyst, philosopher and theoretical biologist.",
   "pageUrl": "https://en.wikipedia.org/wiki/Alan_Turing",
   "description": "English computer scientist (1912–1954)",
   "thumbnailUrl": "https://upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Alan_Turing.jpg/330px-Alan_Turing.jpg",
   "wikibaseItem": "Q7251"
  },
  "meta": {
   "cached": false,
   "source": "Wikipedia REST API",
   "fetchedAt": "2026-07-04T00:00:00.000Z",
   "attribution": "Content from Wikipedia, licensed CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)"
  },
  "endpoint": "/knowledge/wiki/:title"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stride20k-wikipedia-knowledge-lookup-8b4fc1b4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gateway.stride20k.com](https://www.zero.xyz/host/gateway.stride20k.com/llms.txt)