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Stelar Digital Sentiment Scorer
x402
Stelar Digital Sentiment Scorer is a paid API for AI agents from api.stelardigital.com, paid per call via x402, $0.005/call, not verified (last probed 2026-10-29); live alternatives: x402node Sentiment Analysis API ($0.0022) and x402 Sentiment & Emotion Analyzer ($0.01).
Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5. Live alternatives for the same use case: x402node Sentiment Analysis API ($0.0022) · x402 Sentiment & Emotion Analyzer ($0.01).
Returns a sentiment score (-1 bearish to +1 bullish) and a label for arbitrary text or for a crypto asset based on its recent price action, powered by Claude Haiku.
Price / call$0.005
Success100%
StatusUnknown
How this service works
Sentiment score (-1 bearish to +1 bullish) and label for arbitrary text, or for a crypto asset based on its recent price action, via Claude Haiku. For agents gauging market mood or scoring news, social posts, or free text.
Output
A numeric sentiment score between -1 (fully bearish) and +1 (fully bullish) and a corresponding label (e.g. bullish, bearish, neutral) for either the provided text or the specified crypto asset's recent price behavior.
Example use cases
Crypto news sentiment pipeline
“I have this headline from CoinDesk: 'Bitcoin ETF inflows hit record highs as institutional demand surges.' Can you score its sentiment and tell me if it's bullish, bearish, or neutral?”
Social post mood scoring
“Score the sentiment of this Reddit post for me: 'ETH gas fees are insane again, nobody is going to use this chain long-term.' Is it leaning bearish?”
Price-action mood for a crypto asset
“What's the current sentiment score for SOL based on its recent price action — is it bullish or bearish right now?”
Technical details
Endpoint
GEThttps://api.stelardigital.com/sentiment?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, quantified sentiment score (-1 to +1) for crypto-related text or for gauging market mood from price action on a specific asset. It is ideal for pipelines that process news headlines, social posts, or commentary at scale and need a numeric signal rather than qualitative analysis. Prefer it over generic sentiment APIs when crypto domain framing matters, and when you need both free-text and price-action sentiment from a single endpoint.
Side effects
- Missing both 'text' and 'asset' query params — API returns an error requiring at least one input
- Unsupported asset symbol not in the allowed enum (ADA, BTC, DOGE, ETH, LTC, SOL, XLM, XRP) — returns validation error
- Claude Haiku inference timeout or unavailability — may return 5xx error
- Ambiguous or very short text may produce low-confidence scores near 0
- Payment not completed or insufficient USDC balance — returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"input": "SOL",
"label": "bullish",
"sentiment": 0.42
}
}Tags
x402
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