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ONE Engine Odd Number Check
x402
ONE Engine Odd Number Check is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0009/call, status unknown (last checked 2026-10-02).
Checks whether a given integer is odd, returning a boolean result for $0.0009 USDC per call via x402 on Base.
Price / call$0.0009
Success—
StatusUnknown
How this service works
Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.
Output
A JSON object with a single boolean field `odd` indicating whether the provided integer is odd (e.g. {"odd": true}).
Example use cases
Parity gate in data pipeline
“I'm processing a list of IDs and need to route odd-numbered ones differently — can you check if 4821 is odd?”
Game logic odd-turn check
“In my turn-based game, odd turns trigger a special event. Is turn number 73 an odd turn?”
Math homework verification
“My student says 256 is an odd number — can you verify that for me?”
Technical details
Endpoint
POSThttps://one-search.one-engine.workers.dev/v1/number/odd?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-call, trustless, on-chain-settled parity check for integers, especially in autonomous agent workflows where micropayments via x402 on Base are already in use and you want minimal overhead for a simple utility computation.
Side effects
- Missing or non-integer `value` field returns a validation error
- Non-integer types (floats, strings) may cause a parsing or type error
- Insufficient USDC balance or failed x402 payment results in a 402 Payment Required response
- Service unavailability on Cloudflare Workers edge may return a 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| value | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"odd": true
}
}Tags
x402
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