# Wikipedia Article Summary (Lead Section) by Title

> Wikipedia Article Summary (Lead Section) by Title is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-03).

Fetches the lead-section summary of a Wikipedia article given its title and optional language code

## Facts

- Endpoint: POST https://twin.unykorn.org/research/wiki-summary?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wikipedia-article-summary-lead-section-by-title-7eca31c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ha5efznWPn2I5ZtlsPy8t

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-article-summary-lead-section-by-title-7eca31c0 -d '<json body>'
```

Example prompt: Can you pull the Wikipedia lead section summary for 'Large Language Model' in English?

## When to prefer this

Choose this endpoint when you need a quick, reliable, human-readable summary of a well-known topic, entity, person, or concept from Wikipedia. It is ideal for enriching agent context, providing background knowledge, or answering general knowledge questions without needing to scrape or parse the full Wikipedia page. Prefer it over a general web search when you specifically want encyclopedic, structured introductory content rather than opinion or news.

## Known failure modes

- Article not found for the given title returns an error or empty result
- Ambiguous or misspelled title may resolve to a disambiguation page or incorrect article
- Unsupported language code results in an error or fallback
- Rate limiting or upstream Wikipedia API unavailability causes request failure
- Very short or stub articles may return minimal text

## How this service works

Wikipedia article summary (lead section) by title — Genesis402 / UnyKorn Operator Network

## Output

Returns the lead/introductory section of the specified Wikipedia article — typically 1–5 paragraphs of encyclopedic summary — along with any available article metadata such as title and language.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "lang": {
     "type": "string",
     "description": "optional, default en"
    },
    "title": {
     "type": "string",
     "description": "required: article title"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "wiki-summary",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.002,
   "receipt_id": "g402-<16hex>"
  },
  "sources": [
   {
    "ok": true,
    "name": "<source>"
   }
  ],
  "limitations": "<text>",
  "generated_at": "<iso time>",
  "evidence_hash": "sha256:<64hex>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wikipedia-article-summary-lead-section-by-title-7eca31c0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)