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Delx Commerce Sigmoid Function API
x402
Delx Commerce Sigmoid Function API is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes the sigmoid (logistic) activation function for a given numeric input, returning the probability value between 0 and 1.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing the original input value (x), the sigmoid-transformed probability (prob, a float between 0 and 1), and a schema identifier string (e.g. 'delx/util-sigmoid/v1') for verifiable result provenance.
Example use cases
Logit to probability conversion
“I have a raw model score of -1.2 and I need to convert it to a probability using the sigmoid function — can you do that?”
Neural network activation check
“What's the sigmoid activation value for x = 0.75? I'm manually tracing a neural network layer.”
Binary classification threshold check
“I need to know what probability sigmoid gives me for a logit of 3.0 so I can decide whether it crosses my 0.8 classification threshold.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/sigmoid?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call sigmoid computation without managing any ML runtime or library, especially in agent pipelines that already use USDC micropayments via x402. Ideal for agents that need verifiable, auditable math results on Base or Solana without any API key setup.
Side effects
- Missing or non-numeric 'x' field returns a validation error
- Extremely large or small x values may return probabilities indistinguishable from 0 or 1 due to floating-point limits
- Payment failure via x402 protocol results in 402 status and no computation
- Malformed JSON body returns 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| x | number | Input field: x. |
Output
Schema · Response
{
"type": "json",
"example": {
"x": 0.5,
"prob": 0.6224593312018546,
"schema": "delx/util-sigmoid/v1"
}
}Tags
x402
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