# Wikipedia Article Summary Lookup

> Wikipedia Article Summary Lookup is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Fetches a Wikipedia article's lead paragraph, description, thumbnail, images, and content URLs by exact page title

## Facts

- Endpoint: GET https://api.x402node.dev/knowledge/wikipedia-page
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-x402node-dev-c1720e66
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RazVSCCvbeA5WiQ6NgX47

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 api-x402node-dev-c1720e66
```

Example prompt: Can you pull the Wikipedia summary for 'Marie Curie' — I need the lead paragraph, description, and thumbnail to use as grounding context for my research assistant?

## When to prefer this

Use this endpoint when an AI agent needs grounded, encyclopedic context about a well-known entity, person, concept, or event by exact Wikipedia title — especially for RAG pipelines, biography lookups, or literature review tasks where a concise lead paragraph plus metadata is sufficient and real-time web scraping is not desired.

## Known failure modes

- Article title not found on Wikipedia returns a 404 or empty result
- Ambiguous or redirected titles may return unexpected article content
- Non-English language codes may yield no result if article doesn't exist in that language
- Special characters or spaces in title not URL-encoded correctly may cause lookup failure
- Payment failure (insufficient USDC balance) results in 402 error before query is executed

## How this service works

Get a Wikipedia article summary by exact title. Returns extract (lead paragraph), description, thumbnail, originalimage, content URLs (desktop/mobile/edit), and wikibase_item. Use ?title=Albert_Einstein plus optional and lang=en. Built for AI agents doing literature review, biography lookup, and grounded RAG. Accepts payment on Base or Solana — either network works.

## Output

Returns a JSON object containing the article extract (lead paragraph text), a short description, thumbnail image metadata, original image metadata, content URLs for desktop/mobile/edit views, and the wikibase_item identifier for the queried Wikipedia title.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "title"
     ],
     "properties": {
      "lang": {
       "type": "string",
       "description": "Lang (optional)"
      },
      "title": {
       "type": "string",
       "description": "Title (required)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-x402node-dev-c1720e66/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x402node.dev](https://www.zero.xyz/host/api.x402node.dev/llms.txt)