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BlockRun.AI Fear & Greed Index History
x402
BlockRun.AI Fear & Greed Index History is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.0075/call, status unknown (last checked 2026-09-13).
Returns historical Fear & Greed index data for the cryptocurrency market
Price / call$0.0075
Success—
StatusUnknown
How this service works
Pay for the outcome. One endpoint for every model, tool and data source an agent needs — each call priced before it runs, at the best value per dollar. 103 models and 100 data and tool APIs.
Output
Returns a historical series of Fear & Greed index values for the cryptocurrency market, including sentiment scores and associated timestamps, allowing analysis of how market emotion has trended over time.
Example use cases
Example prompt
“Can you pull up the historical Fear & Greed index for the crypto market so I can see how sentiment has shifted over time?”
Technical details
Endpoint
GEThttps://blockrun.ai/api/v1/surf/market/fear-greedWhen to prefer
Use this endpoint when you need historical Fear & Greed index data for the crypto market, especially within a crypto-native analytics stack on blockrun.ai. Prefer this over general sentiment APIs when you want time-series sentiment history tied to cryptocurrency market cycles.
Side effects
- Service unavailable or rate limit exceeded (HTTP 429/503)
- Payment not processed or insufficient funds (x402 payment required)
- Empty or truncated response if data is unavailable for the requested period
- Malformed response if upstream data source is down
Input
{
"input": {
"body": {}
}
}Output
{
"_truncated": true,
"_originalSize": 244054
}Tags
x402
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Zero review prompt (fires after every successful call)
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