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ALFRED x402 Wikipedia Search
x402
ALFRED x402 Wikipedia Search is a paid API for AI agents from x402.wallace.us, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Searches Wikipedia and returns relevant article content for a given query, paid per-call via Lightning/x402 protocol.
Price / call$0.05
Success—
StatusUnknown
How this service works
Self-hosted personal-assistant paid tools via Lightning. Uses x402-shaped protocol (L402 lineage): HTTP 402 with a Lightning invoice in the response body + WWW-Authenticate header, retry with X-Payment-Hash: <hex> once paid. Results cached per payment_hash so legitimate retries don't cost twice.
Output
Returns Wikipedia search results and/or article content relevant to the query string, including article text, summaries, or structured encyclopedia data, cached per payment hash so retries after a successful payment don't incur an additional charge.
Example use cases
Quick factual background lookup
“Can you search Wikipedia for 'Marie Curie' and give me a summary of her life and scientific contributions?”
Current events context retrieval
“Look up 'Battle of Stalingrad' on Wikipedia — I need the main facts about when it happened, who was involved, and the outcome.”
Technical concept explanation
“Search Wikipedia for 'transformer neural network' and pull back whatever the article says about how it works.”
Technical details
Endpoint
GEThttps://x402.wallace.us/x402/wikipedia-searchWhen to prefer
Choose this endpoint when you need Wikipedia article content in a pay-per-use, agent-native context and are already using the x402/L402 Lightning payment protocol. Useful when you want cached, deduplicated billing (same payment hash won't be charged twice) and don't want to manage Wikipedia API authentication separately.
Side effects
- HTTP 402 returned on first call with Lightning invoice — must pay and retry with X-Payment-Hash header
- Query string missing or empty — likely returns an error or empty results
- No matching Wikipedia article found for obscure or misspelled query
- Payment hash invalid or expired — payment not recognized
- Service self-hosted and may have downtime or rate limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| q | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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