# WorldData402 Wikipedia Summary

> WorldData402 Wikipedia Summary is a paid API for AI agents from worlddata402.worlddata402.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Retrieves a concise Wikipedia summary for a given article title, paid per-call via x402 USDC micropayment on Base mainnet.

## Facts

- Endpoint: POST https://worlddata402.worlddata402.workers.dev/v1/wiki/summary/%7Btitle%7D?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/worlddata402-wikipedia-summary-0f64709c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9wmy9aE5hCuxYp1skaSwl

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 worlddata402-wikipedia-summary-0f64709c -d '<json body>'
```

Example prompt: Can you pull the Wikipedia summary for 'European Union' so I have a quick reference overview of what it is and its key facts?

## When to prefer this

Choose this endpoint when you need quick, structured Wikipedia-sourced summaries for well-known entities (countries, organizations, people, concepts) within an AI agent pipeline that supports x402 micropayments on Base. It is ideal for enriching agent context with factual reference data without building your own Wikipedia scraper. Prefer it over generic web search when you specifically want encyclopedic, structured background rather than current news or opinionated sources.

## Known failure modes

- Article title not found on Wikipedia — returns a 404 or empty result
- Ambiguous title resolves to disambiguation page — summary may be generic or unhelpful
- Payment failure via x402 — call not processed if USDC balance is insufficient or transaction fails
- Rate limiting or worker timeout — temporary unavailability of the Cloudflare Worker endpoint
- Title contains special characters or formatting that breaks URL path parsing

## How this service works

Global market, government and reference data for AI agents. Pay-per-call over x402 (USDC on Base mainnet).

## Output

Returns a concise plain-text summary extracted from the Wikipedia article matching the provided title, typically including a short encyclopedic description, key facts, and contextual background about the entity or topic.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/worlddata402-wikipedia-summary-0f64709c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from worlddata402.worlddata402.workers.dev](https://www.zero.xyz/host/worlddata402.worlddata402.workers.dev/llms.txt)