# Vextorium Market Sentiment Analyzer

> Vextorium Market Sentiment Analyzer is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-16).

Analyzes free-form text to produce a sentiment score, label (bullish/bearish/neutral), confidence, and list of mentioned crypto assets

## Facts

- Endpoint: POST https://api.vextorium.com/v1/market-sentiment?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-market-sentiment-analyzer-a5dcf39a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fnhXAZbkcvqZI9cuRSoo5

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 vextorium-market-sentiment-analyzer-a5dcf39a -d '<json body>'
```

Example prompt: Analyze the sentiment of this text for me and tell me if it's bullish or bearish, give me a score and confidence, and list any crypto assets mentioned: 'Record ETF inflows and ETH breaking key resistance suggest strong upside momentum heading into the weekend.'

## When to prefer this

Choose this endpoint when you need structured sentiment signals — score, label, confidence, and asset extraction — from unstructured financial or crypto text in a single pay-per-call request. Prefer it over general-purpose LLM prompting when you need consistent JSON output with numeric scores, or when processing many snippets at a fixed low cost per call ($0.006 USDC). Especially useful for crypto/DeFi-specific sentiment where asset mention extraction is required alongside sentiment.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Non-financial or ambiguous text may yield low confidence scores
- Very short text (e.g. single words) may produce unreliable sentiment labels
- Network timeout or payment failure returns no result
- Text in languages other than English may produce degraded accuracy

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

Returns a JSON object with: 'sentiment' (string label such as 'bullish', 'bearish', or 'neutral'), 'score' (float from -1 to 1 or 0 to 1 indicating direction/intensity), 'confidence' (float 0–1), 'reason' (short natural-language explanation), and 'mentioned_assets' (array of ticker or asset name strings found in the text).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to analyse"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "score": 0.7,
  "reason": "Entradas record en ETF y ruptura de resistencia.",
  "sentiment": "bullish",
  "confidence": 0.85,
  "mentioned_assets": [
   "ETH"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-market-sentiment-analyzer-a5dcf39a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)