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BaseBuilder Sentiment Fear & Greed Index
x402
BaseBuilder Sentiment Fear & Greed Index is a paid API for AI agents from bb-sentiment.vercel.app, paid per call via x402, $0.161038/call, status unknown (last checked 2026-09-15).
Returns the current crypto Fear & Greed index score and sentiment classification for market mood analysis
Price / call$0.161038
Success—
StatusUnknown
How this service works
BaseBuilder Sentiment API hub - 14 paid endpoints
Output
A fear and greed index score (typically 0-100) along with a sentiment classification label such as 'Extreme Fear', 'Fear', 'Neutral', 'Greed', or 'Extreme Greed', representing the current overall mood of the cryptocurrency market.
Example use cases
Trading strategy entry point analyzer
“Check the fear and greed index for me — if we're in extreme fear territory, flag it as a potential buy signal for my portfolio.”
Portfolio rebalancing decision support
“What's the current market sentiment reading? I want to know if we should be aggressive or cautious with rebalancing based on whether fear or greed is dominating right now.”
Market timing dashboard alerts
“Pull the latest fear and greed score and tell me if it's shifted significantly from yesterday — I need to know if sentiment is swinging toward either extreme so I can adjust my positions.”
Technical details
Endpoint
POSThttps://bb-sentiment.vercel.app/api/sentiment/fear-greedWhen to prefer
Use this endpoint when you need a real-time or near-real-time fear and greed index score for the cryptocurrency market, especially when building trading assistants, portfolio analysis tools, or market mood dashboards that need a quick scalar sentiment signal rather than raw social media sentiment analysis.
Side effects
- Payment not provided or insufficient USDC — returns 402 Payment Required
- Invalid or malformed POST body — returns 400 Bad Request
- Upstream data source unavailable — returns 503 or 500 error
- Rate limit exceeded — returns 429 Too Many Requests
Tags
x402
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