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Synapse SERP Search
x402
Synapse SERP Search 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).
Performs a web search using DuckDuckGo and returns ranked results including URLs, titles, and snippets for a given query.
Price / call$0.002
Success—
StatusUnknown
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 original query string, the source engine (DuckDuckGo), and an array of ranked results each with a URL, title, snippet text, and integer position.
Example use cases
Research topic background for an agent
“Search the web for 'quantum computing recent breakthroughs' and show me the top 5 results with titles and snippets.”
Find current pricing or market info
“Look up 'bitcoin price today' on the web and return the top search results so I can see what sites are reporting.”
Competitive intelligence lookup
“Search for 'best AI coding assistants 2024' and list the top results with their URLs and descriptions.”
Technical details
Endpoint
GEThttps://anibalb.duckdns.org/x402/serp?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, keyless web search with no account setup, paying only per call in USDC on Base via x402. It is ideal for agents needing programmatic access to DuckDuckGo SERP results without registering for a search API or managing quotas. Prefer it over Google/Bing search APIs when privacy-focused, low-friction, pay-as-you-go access is more important than maximum result volume or advanced filtering.
Side effects
- Missing or empty query parameter returns an error or empty results
- DuckDuckGo rate limiting or downtime causes upstream failure
- Payment in USDC on Base not completed causes 402 rejection
- Malformed request (wrong HTTP method or missing required fields) returns 4xx error
- Query returns no results for obscure or nonsensical inputs
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"query": "bitcoin price",
"source": "duckduckgo",
"results": [
{
"url": "https://...",
"title": "...",
"snippet": "...",
"position": 1
}
]
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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