# SiteCheck Content Moderation

> SiteCheck Content Moderation is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).

Checks text or a chat conversation for unsafe content using Llama Guard 3, returning a safety classification with flagged categories

## Facts

- Endpoint: POST https://api.sitecheck-api.workers.dev/api/moderate?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-content-moderation-2c1c3d75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_r5i2GkABM764feO68p-bC

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 sitecheck-content-moderation-2c1c3d75 -d '<json body>'
```

Example prompt: Before I post this user comment — 'I know where you live and you'll regret this' — to our forum, can you run a content moderation check on it and tell me if it's safe or what harmful categories it falls into?

## When to prefer this

Choose this endpoint when you need a fast, pay-per-call content moderation check powered by Meta's Llama Guard 3 model without managing your own moderation infrastructure. It accepts both raw text and structured multi-turn chat histories, making it suitable for screening both UGC and AI assistant outputs. Prefer it over OpenAI Moderation or AWS Rekognition when you want a single unified pay-as-you-go API with no subscription, and when you need Llama Guard 3's specific safety category taxonomy.

## Known failure modes

- Text exceeds 8,000 character limit — request rejected
- More than 20 chat message turns provided — request rejected
- Malformed messages array (missing role or content fields) — validation error
- Payment not provided or insufficient — 402 Payment Required
- Network timeout on Workers AI inference — 5xx error

## How this service works

Safety check of a text or a chat turn with Llama Guard 3: safe or unsafe, and the violated categories (S1 to S14, named in plain words). Send text, or messages (up to 20 turns). Classifies only; it does not change or block anything.

## Output

Returns a JSON object with a boolean 'safe' field indicating whether the content passed moderation, the model name used (Llama Guard 3 8B via Cloudflare Workers AI), the source description, a timestamp, and an array of flagged safety categories (empty if content is safe).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to check, up to 8,000 characters"
  },
  "messages": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "description": "Or chat turns: {role: user or assistant, content}, up to 20"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "safe": true,
  "model": "@cf/meta/llama-guard-3-8b",
  "source": "Llama Guard 3 (Workers AI)",
  "checkedAt": "2026-10-14T07:05:00.000Z",
  "categories": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-content-moderation-2c1c3d75/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)