# Wikipedia Summary Lookup

> Wikipedia Summary Lookup is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).

Fetches a plain-text summary extract and metadata for a given Wikipedia article topic

## Facts

- Endpoint: GET https://anibalb.duckdns.org/x402/wikipedia-summary?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wikipedia-summary-lookup-b00719ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UBI0LO8acUbjZktSbCo4n

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-summary-lookup-b00719ca
```

Example prompt: Can you pull the Wikipedia summary for Bitcoin so I have a quick overview of what it is?

## When to prefer this

Use this endpoint when you need a quick, human-readable encyclopedia-style summary of a topic without setting up Wikipedia API credentials. It is ideal for enriching agent responses with background context, populating knowledge cards, or answering 'what is X?' questions. It is not suited for full article retrieval, citations, or structured infobox data.

## Known failure modes

- Topic not found on Wikipedia — returns empty or error response
- Ambiguous topic name resolves to wrong article — extract may be for a disambiguation page
- Wikipedia API rate limits or downtime cause upstream failures
- Misspelled topic input returns no results
- Non-English topic names may return inconsistent results depending on Wikipedia's language routing

## How this service works

Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.

## Output

Returns a JSON object containing the Wikipedia article URL, the article title, and a plain-text extract (introductory summary paragraph) for the requested topic. If the topic maps to a valid Wikipedia article, the extract can range from a single sentence to several paragraphs.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://en.wikipedia.org/wiki/Bitcoin",
  "title": "Bitcoin",
  "extract": "Bitcoin is the first decentralized cryptocurrency..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wikipedia-summary-lookup-b00719ca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anibalb.duckdns.org](https://www.zero.xyz/host/anibalb.duckdns.org/llms.txt)