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Carbon Cashmere On-Chain Fear & Greed Index
x402
Carbon Cashmere On-Chain Fear & Greed Index is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.01/call, status down (last checked 2026-09-14).
Returns a proprietary 0-100 Bitcoin on-chain Fear & Greed score aggregated from 4 components: Coin Days Destroyed, mempool pressure, hashrate trend, and whale balance changes — updated every 10 minutes from a self-hosted Bitcoin Core node.
Price / call$0.01
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
Returns a 0-100 Fear & Greed composite score along with the 4 component sub-scores: Coin Days Destroyed (smart-money flow), mempool pressure (sat/vB urgency), hashrate trend (miner sentiment), and whale balance changes. Also includes the current sentiment regime label and a timestamp indicating when the score was last updated (refreshed every 10 minutes).
Example use cases
Timing portfolio rebalancing with whale activity
“I'm thinking about rebalancing my portfolio soon. Can you check the current Bitcoin on-chain Fear & Greed score and tell me what the whale balance changes component is showing? If whales are accumulating, I'd rather wait a bit longer before making moves.”
Assessing miner capitulation during downturns
“The Bitcoin price has dropped 15% this week. Pull the latest on-chain Fear & Greed breakdown for me, especially the hashrate trend and coin days destroyed — I want to know if this looks like a genuine capitulation event or just temporary volatility.”
Validating signals before executing large trades
“Before I execute this trade, give me a real-time read on Bitcoin's on-chain sentiment. I need the full Fear & Greed score with mempool pressure and whale balance changes — I want to make sure the on-chain data actually backs up what the price action is telling me.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/onchain-fear-greedWhen to prefer
Prefer this endpoint when you need a Bitcoin-specific sentiment score derived purely from on-chain blockchain data rather than price action or social media. It is independent of exchange price feeds, making it a complementary or contrarian signal. Ideal for trading strategy context, portfolio risk assessment, or monitoring shifts in miner/whale behavior that precede price moves.
Side effects
- Bitcoin Core node temporarily unavailable — upstream data gap returns 503 or stale data warning
- Mempool or hashrate data feed lag causes partial component scores
- Rate limiting if called too frequently — 429 response
- Payment not processed correctly via x402 — 402 payment required error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"score": 81.4,
"source": "bitcoin_core_node",
"cdd_score": 90.1,
"whale_score": 93.9,
"mempool_score": 100,
"classification": "Extreme Greed",
"hashrate_score": 41.4,
"components_used": 4
}
}Tags
x402
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