# Synapse Content Moderation API

> Synapse Content Moderation API is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).

Analyzes text content for safety issues including NSFW, spam, toxicity, profanity, and hate speech, returning per-category scores and an overall safety flag

## Facts

- Endpoint: GET https://anibalb.duckdns.org/x402/moderation?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synapse-content-moderation-api-5db7b613
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vwmSXC_v2Brf78hHrBlL_

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 synapse-content-moderation-api-5db7b613
```

Example prompt: Check if this user comment is safe to publish — 'You are the dumbest person alive, go back to your country' — and tell me the toxicity, hate speech, and overall safety scores.

## When to prefer this

Choose this endpoint when you need a quick, no-account, pay-per-call content moderation check returning granular per-category scores (NSFW, spam, toxicity, profanity, hate speech) via x402 micropayment on Base. Ideal for agents that need to gate user-generated content at low volume without managing API keys or subscriptions.

## Known failure modes

- Empty or missing input text may return a default safe result with zero scores
- Very long text inputs may be truncated or timeout
- Payment failure via x402 returns 402 status before content is analyzed
- Ambiguous or borderline content may score near threshold without clear flagging
- Non-English text may have reduced accuracy across categories

## How this service works

Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.

## Output

Returns a JSON object with a boolean 'safe' field, an array of 'flags' identifying triggered categories, a 'categories' object with individual float scores for nsfw, spam, toxicity, profanity, and hate_speech (each 0–1), and an 'overall_score' summarizing the risk level.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "safe": true,
  "flags": [],
  "categories": {
   "nsfw": 0,
   "spam": 0,
   "toxicity": 0,
   "profanity": 0,
   "hate_speech": 0
  },
  "overall_score": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synapse-content-moderation-api-5db7b613/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anibalb.duckdns.org](https://www.zero.xyz/host/anibalb.duckdns.org/llms.txt)