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PennyRail OpenAPI Search
x402
PennyRail OpenAPI Search is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status down (last checked 2026-10-22).
Searches OpenAPI specifications for matching operations or endpoints using a natural-language or structured query input
Price / call$0.001
Success—
StatusDown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing matching OpenAPI operation entries, including endpoint paths, HTTP methods, descriptions, and schema details relevant to the search query.
Example use cases
Discover payment-related API operations
“Search the OpenAPI catalog for any operations related to payment processing or settlement and show me what endpoints are available.”
Find authentication endpoints in an API spec
“I need to find all authentication or login-related operations in the OpenAPI spec — can you search for those and list what comes back?”
Locate data validation endpoints
“Search the OpenAPI index for any endpoints that deal with validating JSON payloads or request schemas and give me the results.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/openapi.search--search-openapi?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically discover or search OpenAPI-defined operations within PennyRail's indexed catalog, especially in agent pipelines that need to dynamically find the right API endpoint before invoking it. Prefer this over manual spec browsing when automating API discovery workflows.
Side effects
- Missing or malformed 'input' object returns validation error
- Empty or overly broad query returns too many or zero results
- Query terms not matching any indexed operation return empty result set
- Service unavailability on Vercel infrastructure returns 5xx error
- Payment failure via x402 protocol blocks access before search executes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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