# NexusAPI AI Sentiment Analysis

> NexusAPI AI Sentiment Analysis is a paid API for AI agents from nexus-api-peach-nine.vercel.app, paid per call via x402, $0.122078/call, status unknown (last checked 2026-09-14).

Analyzes the sentiment of a given text or search query, returning a sentiment classification and related scores

## Facts

- Endpoint: POST https://nexus-api-peach-nine.vercel.app/api/ai/sentiment
- Price: $0.122078/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nexusapi-ai-sentiment-analysis-9e1e3cfa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X_ACkXEFVmkAaa0AM82Y7

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 nexusapi-ai-sentiment-analysis-9e1e3cfa -d '<json body>'
```

Example prompt: Can you analyze the sentiment of this text and tell me if it's positive, negative, or neutral: 'The product quality was excellent but the shipping took way too long and customer support was unresponsive.'

## When to prefer this

Use this endpoint when you need quick, pay-per-call sentiment classification without managing API keys, particularly in crypto/finance or social media contexts where USDC micropayments are acceptable and no subscription is desired

## Known failure modes

- Empty or missing query field returns validation error
- Excessively long input text may be truncated or rejected
- Ambiguous or multilingual text may produce low-confidence results
- Payment failure via x402 prevents call execution
- Rate limiting or server errors on the Vercel deployment may cause 5xx responses

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns a sentiment classification (positive, negative, neutral) with associated confidence or sentiment scores for the provided text input

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nexusapi-ai-sentiment-analysis-9e1e3cfa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nexus-api-peach-nine.vercel.app](https://www.zero.xyz/host/nexus-api-peach-nine.vercel.app/llms.txt)