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Strale Sentiment Analysis
x402
Strale Sentiment Analysis is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054001/call, status unknown (last checked 2026-09-14).
Analyzes text sentiment returning overall polarity (positive/negative/neutral/mixed), confidence scores, and aspect-level sentiment breakdown.
Price / call$0.054001
Success—
StatusUnknown
How this service works
Analyze the sentiment of text. Returns overall sentiment (positive/negative/neutral/mixed), confidence scores, and aspect-level sentiment.
Output
Returns an overall sentiment label (positive, negative, neutral, or mixed), confidence scores indicating certainty, and aspect-level sentiment identifying sentiment toward specific aspects or topics mentioned in the text.
Example use cases
Example prompt
“Analyze the sentiment of this customer review and tell me if it's positive, negative, neutral, or mixed along with a confidence score: "The product quality is excellent but shipping took forever and customer support was unhelpful."”
Technical details
Endpoint
GEThttps://api.strale.io/x402/sentiment-analyzeWhen to prefer
Use this endpoint when you need both overall sentiment classification and granular aspect-level sentiment in a single call, especially when confidence scores are required for downstream decision-making. Prefer over simpler polarity classifiers when mixed sentiment detection is important.
Side effects
- Missing required 'text' query parameter returns validation error
- Empty string input may return undefined or error response
- Very long text inputs may be truncated or rejected
- Non-English text may produce lower accuracy results
- Rate limiting or quota exceeded returns 402/429 error
- Network timeout for unusually complex or long inputs
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"text": "The product quality is excellent but shipping took forever and customer support was unhelpful."
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.054000000000000006,
"settlement_id": "0x2d0ed5ed35f3b89b832462dcdcc2b76560db6e5d3b2993b17d08ed55835e4e24"
},
"capability": "sentiment-analyze",
"latency_ms": 1544,
"provenance": {
"source": "claude-haiku",
"fetched_at": "2026-06-05T23:36:12.087Z"
}
},
"scores": {
"neutral": 0.15,
"negative": 0.5,
"positive": 0.35
},
"aspects": [
{
"aspect": "product quality",
"sentiment": "positive",
"text_span": "product quality is excellent"
},
{
"aspect": "shipping speed",
"sentiment": "negative",
"text_span": "shipping took forever"
},
{
"aspect": "customer support",
"sentiment": "negative",
"text_span": "customer support was unhelpful"
}
],
"summary": "The text expresses mixed sentiment with praise for product quality offset by complaints about slow shipping and poor customer support.",
"sentiment": "mixed",
"confidence": 0.92,
"detected_language": "English"
}Tags
x402
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