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PennyRail number.clamp
x402
PennyRail number.clamp is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Clamps a numeric value between a minimum and maximum bound, returning the constrained result
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object with an 'operation' string (e.g. 'number.clamp') and a 'result' field containing the clamped numeric value — the input value constrained to the [min, max] range.
Example use cases
Sanitize sensor reading to valid range
“I have a temperature sensor that returned 212 degrees but valid readings should be between -50 and 150 — clamp it to that range for me.”
Cap user score to leaderboard bounds
“A player's score came in at -30 but scores must be between 0 and 1000 — can you clamp that value so it's within the valid range?”
Normalize slider input for UI component
“My UI slider value is 1.8 but the allowed range is 0.0 to 1.0 — clamp 1.8 between 0 and 1 so I can use it safely.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/f/number.clampWhen to prefer
Choose this endpoint when you need a simple, pay-per-call hosted math utility to clamp a number without spinning up your own compute. Useful in agent pipelines where arithmetic helpers need to be composable microservices, or when you want auditable on-chain micropayment settlement per computation call via the x402 protocol.
Side effects
- Missing required 'input' object returns a validation error
- Missing value, min, or max fields inside input may cause unexpected behavior or error
- Non-numeric values passed as value/min/max may cause computation failure
- min greater than max may produce undefined or erroneous results
- Network timeout or Vercel cold-start latency on first invocation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | {value,min,max} |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| resultrequired | — | |
| operationrequired | string |
Tags
x402
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