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NexusAPI AI Sentiment Analysis
x402
NexusAPI AI Sentiment Analysis is a paid API for AI agents from nexus-api-virid.vercel.app, paid per call via x402, $0.062018/call, status unknown (last checked 2026-09-14).
Analyzes the sentiment of a given text or search query and returns a sentiment classification with scoring
Price / call$0.062018
Success—
StatusUnknown
How this service works
Crypto, AI, Social Media, Finance, Weather, Tools & more. Pay per call in USDC on Base. No API keys.
Output
Returns a sentiment classification (e.g. positive, negative, neutral) along with associated scoring or confidence metrics for the provided text input
Example use cases
Customer review sentiment scoring
“Analyze the sentiment of this product review and tell me if it's positive, negative, or neutral: 'Great build quality but the battery life is disappointing and the price feels too high.'”
Social media post tone detection
“What's the overall sentiment of this tweet? 'Can't believe how smoothly the new software update went — everything just works now, super impressed!'”
Brand monitoring feedback classification
“Is the sentiment in this support ticket positive, negative, or neutral: 'I've been waiting three weeks for a resolution and nobody has gotten back to me — this is completely unacceptable.'”
Technical details
Endpoint
POSThttps://nexus-api-virid.vercel.app/api/ai/sentimentWhen to prefer
Choose this endpoint when you need a quick, pay-per-call sentiment classification without managing API keys or subscriptions — ideal for agents that process occasional text inputs and want to avoid committing to a fixed-cost NLP platform. Best suited for English-language text sentiment tasks where a simple positive/negative/neutral classification is sufficient.
Side effects
- Empty or missing query field returns a validation error
- Extremely long text inputs may be truncated or fail
- Ambiguous or very short inputs may produce low-confidence or unreliable sentiment scores
- Non-English text may return incorrect or unsupported sentiment results
- Service downtime on Vercel hosting may cause 502 or 503 errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| query | string | Search query or input parameter |
Output
Schema · Response
{
"type": "object",
"description": "API response data"
}Tags
x402
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