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Agent Paywire Search
x402
Agent Paywire Search is a paid API for AI agents from api.agentpaywire.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).
Search a curated library of articles and resources about how AI agents pay and get paid using stablecoins and machine-to-machine payment protocols
Price / call$0.01
Success—
StatusUnknown
How this service works
Search the Agent Paywire library of Lightning, L402, x402, and stablecoin sources, plus related articles. Optional words (q), category, status, since date, and limit. One request is 0.01 USDC. The files on https://agentpaywire.com stay free.
Output
Returns a JSON object containing the search query echoed back, a count of matching results, and an array of matching articles or library entries, each with an id, URL, kind (article or library resource), title, verified_at date, and date_published.
Example use cases
Researching agent payment protocols
“Search Agent Paywire for everything they have on L402 and lightning network payments for AI agents — give me up to 20 results.”
Finding stablecoin infrastructure guides
“Can you look up Agent Paywire articles about USDC and stablecoin payments for autonomous agents? I want the most recent ones, so filter to anything verified after 2025-06-01.”
Exploring machine-to-machine billing options
“Search Agent Paywire for resources about machine-to-machine payment protocols — I'm trying to understand the technical options available for agents paying other agents, limit to 15 results.”
Technical details
Endpoint
GEThttps://api.agentpaywire.com/v1/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need curated, editorially verified content specifically about AI agent payment protocols, stablecoins, and machine-to-machine payment infrastructure. It is the right choice over general web search when you want high-quality, domain-focused resources vetted by Agent Paywire editors, particularly around x402, L402, USDC, and related agent payment topics.
Side effects
- No results returned for highly specific or obscure queries
- Invalid date format for 'since' parameter returns an error
- Limit exceeding 100 results is capped or rejected
- Unknown category ID returns empty results or error
- Network or payment failure if the x402 USDC payment is not processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"q": "l402",
"count": 1,
"results": [
{
"id": "lightning-labs-l402-for-agents",
"url": "https://lightning.engineering/posts/2026-03-11-L402-for-agents/",
"kind": "library",
"title": "The Future Is Now: Why L402 Is the Internet-Native Payments Protocol for Agents",
"verified_at": "2026-10-20",
"date_published": "2026-03-11"
}
]
}
}Tags
x402
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