# fastapi.online Age Rating Classifier

> fastapi.online Age Rating Classifier is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).

Classifies text content with an age-appropriateness rating (e.g. G, PG, PG-13, R, X) to determine audience suitability

## Facts

- Endpoint: POST https://api.fastapi.online/age-rating?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/fastapi-online-age-rating-classifier-e2cbe752
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_45TbG4XZL_VWvlmDkTlBy

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 fastapi-online-age-rating-classifier-e2cbe752 -d '<json body>'
```

Example prompt: Can you check if this text is appropriate for children — it's a story excerpt I want to publish on a kids' platform: 'The knight drew his sword as the dark wizard unleashed a torrent of cursed fire across the battlefield'?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call age rating for arbitrary text without signing up for a content moderation platform. Ideal for lightweight content screening workflows, developer prototyping, or low-volume pipelines where a flat $0.001 per-call cost is preferable to a subscription. Prefer dedicated content moderation APIs (e.g. OpenAI Moderation, AWS Rekognition) for high-volume or compliance-critical use cases.

## Known failure modes

- Empty or whitespace-only text returns validation error
- Text exceeding 8000 characters is rejected
- Ambiguous or borderline content may receive inconsistent ratings
- Non-English text may yield inaccurate ratings if the model is English-optimized
- Payment failure via x402 protocol results in 402 response and no classification

## How this service works

Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&amp;A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding &amp; crypto utilities, date/time calculators, geo/coordinate math, math &amp; finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.

## Output

Returns an age-appropriateness rating or classification label for the submitted text, indicating the minimum audience age or content category (e.g. G, PG, PG-13, R, or equivalent), likely with a confidence score or reasoning.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 8000,
   "minLength": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-age-rating-classifier-e2cbe752/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fastapi.online](https://www.zero.xyz/host/api.fastapi.online/llms.txt)