# Delx Logit

> Delx Logit is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).

Converts a probability value (0–1) to its logit (log-odds) representation

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/logit?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-logit-a40f628c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_czi39VIpjHNC2fAvzp5dU

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability delx-logit-a40f628c -d '<json body>'
```

Example prompt: What's the logit of a probability of 0.75?

## When to prefer this

Use this endpoint when you need a fast, paid-per-call micro-computation of the logit function without running your own math library — particularly useful in agent pipelines on the Delx platform where you are already making x402 micro-payments and want a governed, auditable computation step.

## Known failure modes

- prob outside [0,1] range — logit is undefined; likely returns error or NaN
- prob exactly 0 or 1 — logit is negative or positive infinity, may cause numeric issues
- missing or non-numeric prob field — likely returns a validation or type error

## How this service works

Logit transform log(p/(1−p)) for probability-space models. Call when featureizing probabilities for linear models offline. Returns logit value as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

## Output

Returns a JSON object containing the original probability (prob), the computed logit value (log(p/(1-p))), and a schema identifier string ('delx/util-logit/v1').

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prob": {
   "type": "number",
   "description": "Input field: prob."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "prob": 0.75,
  "logit": 1.09861228866811,
  "schema": "delx/util-logit/v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-logit-a40f628c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)