Crypto Fear & Greed Index with 7-Day History

x402

Crypto Fear & Greed Index with 7-Day History is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.005/call, status down (last checked 2026-09-14).

Returns the current Crypto Fear & Greed Index (0-100) with label, 7-day historical values, cached delta, and z-score for anomaly detection.

Price / call$0.005

Seller volume →—

Success—

StatusDown

How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

Output

Returns a JSON object with the current Fear & Greed value (0-100 integer), a label (e.g. 'Extreme Fear', 'Greed'), a 7-day historical array of past values, a cached delta showing recent change, and a z-score indicating how statistically extreme the current reading is relative to recent history.

Example use cases

Example prompt

“What's the current Crypto Fear & Greed Index right now, and has it moved significantly from the past week — I want to know if we're in anomaly territory based on the z-score so I can think about a contrarian position.”

Technical details

Endpoint

GEThttps://api.carbon-cashmere.de/v1/fear-greed

When to prefer

Choose this endpoint when you need a quick, enriched sentiment snapshot for crypto markets — especially when you want anomaly detection signals (z-score, delta) alongside the raw Fear & Greed value and 7-day trend, rather than computing these yourself from raw alternative.me data. Ideal for sentiment-aware position sizing logic, contrarian strategy triggers, or any agent workflow that needs to factor market psychology into decisions.

Side effects

Upstream alternative.me API unavailability causing stale or missing data
Payment not fulfilled (402 response) if x402 header not provided
Rate limiting or quota exhaustion returning error response
Empty or null history_7d array if cache is cold
Z-score may be unreliable with very short historical windows

Input

Schema · Request body

Field	Type	Description
properties	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "label": "Fear",
    "value": 31,
    "history_7d": [
      {
        "ts": "1776988800",
        "label": "Fear",
        "value": 39
      },
      {
        "ts": "1776902400",
        "label": "Fear",
        "value": 46
      }
    ]
  }
}

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How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

Output

Technical details

Endpoint

GEThttps://api.carbon-cashmere.de/v1/fear-greed

When to prefer

Side effects

Upstream alternative.me API unavailability causing stale or missing data
Payment not fulfilled (402 response) if x402 header not provided
Rate limiting or quota exhaustion returning error response
Empty or null history_7d array if cache is cold
Z-score may be unreliable with very short historical windows

Input

Schema · Request body

Field	Type	Description
properties	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "label": "Fear",
    "value": 31,
    "history_7d": [
      {
        "ts": "1776988800",
        "label": "Fear",
        "value": 39
      },
      {
        "ts": "1776902400",
        "label": "Fear",
        "value": 46
      }
    ]
  }
}