# AI Sentiment Analysis (Agent Tollgate Engine)

> AI Sentiment Analysis (Agent Tollgate Engine) is a paid API for AI agents from skinwinking.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).

Classifies text (or a batch of up to 50 texts) as POSITIVE, NEGATIVE, or NEUTRAL with a confidence score, paid per-call via x402 USDC.

## Facts

- Endpoint: POST https://skinwinking.com/api/v1/ai/sentiment?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ai-sentiment-analysis-agent-tollgate-engine-235910b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EfZ2amUW8MfZ9yPkAU9at

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 ai-sentiment-analysis-agent-tollgate-engine-235910b3 -d '<json body>'
```

Example prompt: Can you run sentiment analysis on this customer review and tell me whether it's positive, negative, or neutral along with a confidence score: 'The product arrived quickly but the packaging was completely destroyed.'

## When to prefer this

Choose this endpoint when you need fast, affordable ($0.003/call) sentiment classification with batch support (up to 50 texts per call) and can pay per-use in USDC via x402 on Base, Polygon, or Solana — ideal for agent workflows that need sentiment as one step among many without managing a dedicated NLP subscription.

## Known failure modes

- Empty or missing 'text' field returns an error
- Batch exceeds 50 items may be rejected or truncated
- Payment failure via x402 results in 402 response before processing
- Ambiguous or very short text may yield low-confidence scores
- Non-English text may reduce accuracy depending on underlying model

## How this service works

50 pay-per-call tools for agents over x402 (USDC on Base, Polygon, Solana): crypto market data, token audits, indicators, swap routing, web extraction, DNS/WHOIS/email checks, FX, weather and AI text/image tools.

## Output

Returns a JSON object with a 'label' field (e.g. 'POSITIVE', 'NEGATIVE', 'NEUTRAL') and a 'score' field (0–1 confidence). When a batch array is submitted, returns an array of such objects in the same order as the input.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Text, or a JSON array of up to 50 texts"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "label": "POSITIVE",
  "score": 0.99
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ai-sentiment-analysis-agent-tollgate-engine-235910b3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from skinwinking.com](https://www.zero.xyz/host/skinwinking.com/llms.txt)