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PennyRail Web Search (proven-search)
x402
PennyRail Web Search (proven-search) is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Performs a web search query and returns results, accessible via a pay-per-call x402 micropayment settlement endpoint.
Price / call$0.02
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns an object containing web search results, typically including page titles, URLs, snippets or descriptions of matching web pages, and potentially ranking or relevance metadata. The exact shape is open-ended (additionalProperties: true) but expected to mirror standard search result structure.
Example use cases
Real-time research on current events
“Search the web for what's happening with the US Federal Reserve interest rate decisions this week and summarize the top results for me.”
Competitive product research
“Look up recent reviews and comparisons of the top project management tools for small teams — I want to know what people are saying online right now.”
Finding technical documentation
“Search the web for the official docs and community guides on setting up Kubernetes with Helm charts for a production environment.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/premium/web.search--proven-searchWhen to prefer
Choose this endpoint when you need programmatic web search with micropayment-based access via the x402 protocol, particularly in agentic or automated pipelines where per-call USDC billing ($0.02) is acceptable. Prefer this over free-tier alternatives when you need reliable, pay-gated access without API key management overhead. Best suited for agents running on x402-compatible infrastructure that can handle HTTP 402 payment flows natively.
Side effects
- Payment not settled or x402 authorization missing — request rejected before execution
- Malformed or missing 'input' object in request body — 400 validation error
- Search query too vague or empty — may return empty results or an error
- Rate limiting or quota exceeded on the underlying search provider — 429 or 503 response
- Network timeout if underlying search provider is slow — 504 or timeout error
- Unparseable response if the upstream search API changes schema — may return raw or null output
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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