# NeuroFi Crypto Sentiment Analysis

> NeuroFi Crypto Sentiment Analysis is a paid API for AI agents from neuroavichi.vercel.app, paid per call via x402, $0.5/call, status unknown (last checked 2026-09-14).

Returns AI-generated sentiment analysis (positive, negative, neutral) for a given crypto topic or token using NeuroFi's intelligence engine

## Facts

- Endpoint: GET https://neuroavichi.vercel.app/api/sentiment/%7Btopic%7D
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/neurofi-crypto-sentiment-analysis-f8a7ed7f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Hx-OfzeFfJl6r3cnaps5x

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 neurofi-crypto-sentiment-analysis-f8a7ed7f
```

Example prompt: What's the current AI-analyzed sentiment for Bitcoin — is it bullish, bearish, or neutral right now according to NeuroFi?

## When to prefer this

Use this endpoint when you need quick, AI-powered sentiment signals for a specific cryptocurrency or crypto topic, especially when you want sentiment as part of a broader investment research or market monitoring workflow and are comfortable paying a $0.50 USDC x402 micropayment per call.

## Known failure modes

- Invalid or unrecognized topic returns an error or empty sentiment
- Missing x402 micropayment header results in 402 Payment Required response
- Rate limiting or server errors on the Vercel deployment return 5xx responses
- Topic string with special characters may cause URL encoding issues in the path parameter

## How this service works

NeuroFi provides AI-powered crypto intelligence endpoints covering token research, market analysis, contract auditing, sentiment tracking, news summarization, portfolio advice, deep research, text translation, language detection, SEO content generation, and contract explanation. All analytical endpoints require x402 micropayment on Base.

## Output

A JSON object containing the queried topic and a sentiment field indicating the AI-assessed market sentiment (e.g., positive, negative, neutral) for that crypto topic.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "topic": "bitcoin",
  "sentiment": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/neurofi-crypto-sentiment-analysis-f8a7ed7f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from neuroavichi.vercel.app](https://www.zero.xyz/host/neuroavichi.vercel.app/llms.txt)