# PennyRail AI Harmful Content Moderation

> PennyRail AI Harmful Content Moderation is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Checks input content for harmful material using AI moderation, returning a content safety assessment

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/mini/ai.moderate--harmful-content-check
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-ai-harmful-content-moderation-2427ebc9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6ciGITEyJgxtCjQPHU8SB

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 pennyrail-ai-harmful-content-moderation-2427ebc9 -d '<json body>'
```

Example prompt: Can you check this user comment for harmful or dangerous content before we publish it: 'You should all be afraid of what's coming tomorrow'?

## When to prefer this

Choose this endpoint when you need a pay-per-call AI harmful content check without a subscription, particularly in low-volume or on-demand moderation pipelines using the x402 micropayment protocol. It's best for agentic workflows that need lightweight trust-and-safety gating before publishing or processing user-generated content.

## Known failure modes

- Missing or malformed 'input' object returns a 400 validation error
- Payment not provided or insufficient USDC balance results in 402 Payment Required
- Content too large or malformed may cause a 500 error
- Ambiguous or borderline content may return low-confidence results
- Network latency or Vercel cold-start may cause occasional timeouts

## How this service works

Machine-readable settlement service

## Output

Returns a JSON object containing the AI moderation verdict for the submitted content, typically including whether harmful content was detected, a classification of the harm type, and a confidence or severity score.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-ai-harmful-content-moderation-2427ebc9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)