# Text Classifier API (klymax402)

> Text Classifier API (klymax402) is a paid API for AI agents from text-classifier.api.klymax402.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-13).

Classifies text content into predefined or custom categories, returning confidence scores and readability metrics

## Facts

- Endpoint: GET https://text-classifier.api.klymax402.com/api/classify
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/text-classifier-api-klymax402-4367c17c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BwYGZi_-cQQ6hFnxJBMZl

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 text-classifier-api-klymax402-4367c17c
```

Example prompt: Classify this article excerpt into one of these categories — tech, finance, or health — and give me the confidence scores: 'Researchers announced a breakthrough in mRNA vaccine delivery that could reduce dosing frequency significantly.'

## When to prefer this

Use this endpoint when you need fast, scored topic classification of a text passage into standard or custom categories, especially when readability metrics alongside classification confidence are needed. Prefer this over general LLM prompting when you want a structured, deterministic classification output with numeric confidence values rather than a free-text answer.

## Known failure modes

- Text shorter than 50 characters may return inaccurate or low-confidence results
- Invalid or empty text input returns an error
- Custom categories array with unrecognizable or very broad terms may yield low confidence across all labels
- Network timeout if text payload is excessively large
- Payment failure (x402) if USDC balance is insufficient, blocking the request

## How this service works

Classify text content into categories with confidence scores and readability metrics

## Output

Returns category labels with associated confidence scores indicating how strongly the text matches each category, along with readability metrics for the input text

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "The text content to classify (min 50 characters for accurate results)"
  },
  "categories": {
   "type": "array",
   "description": "Optional custom categories to classify against. Default: tech, finance, health, sports, politics, entertainment, science, business"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/text-classifier-api-klymax402-4367c17c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from text-classifier.api.klymax402.com](https://www.zero.xyz/host/text-classifier.api.klymax402.com/llms.txt)