# Rotary Agency Genderize API

> Rotary Agency Genderize API is a paid API for AI agents from rotaryagency.uk, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-17).

Predicts the likely gender of a person based on their first name

## Facts

- Endpoint: GET https://rotaryagency.uk/api/free/genderize?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rotary-agency-genderize-api-2691d5c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tXHHRYdMpAd5hkBGpHKbB

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 rotary-agency-genderize-api-2691d5c8
```

Example prompt: Can you figure out what gender the name 'Jordan' is most commonly associated with, and how confident the prediction is?

## When to prefer this

Choose this endpoint when you need a quick, lightweight gender prediction from a first name without building your own model. It is best for personalization pipelines, CRM enrichment, salutation generation, or demographic analytics where approximate gender inference from names is sufficient. Prefer alternatives if you need multi-locale name handling with deep linguistic analysis or require GDPR-compliant processing guarantees.

## Known failure modes

- Name not found in dataset — returns null gender with zero probability
- Missing or empty name parameter — returns 400 bad request
- Ambiguous or rare names may return low probability scores
- Non-alphabetic or numeric name strings may return unexpected results
- Rate limiting or payment failure may result in 402 or 429 responses

## How this service works

Free-source data APIs (100% margin, no proxy, $0.002/call): ...

## Output

Returns a JSON object containing the queried name, the predicted gender (male/female/null), a probability score between 0 and 1 indicating confidence, and a count representing how many data points back the prediction.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "varies": "endpoint-specific structured JSON"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rotary-agency-genderize-api-2691d5c8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rotaryagency.uk](https://www.zero.xyz/host/rotaryagency.uk/llms.txt)