Pricing

Pay per usage

Crypto Fear & Greed Index Tracker (Historical + Trend)

Tracks the Alternative.me Crypto Fear & Greed Index: historical time-series, regime detection (extreme fear/greed), 7d/30d rolling averages, streak counting, BTC price correlation, and Telegram alerts on extreme readings. No API key required.

Pricing

Pay per usage

Rating

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Developer

Hojun Lee

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Monthly active users

2 days ago

Last modified

Crypto Fear & Greed Index Tracker

Track the Alternative.me Crypto Fear & Greed Index with historical time-series, regime analysis, trend detection, and Telegram alerts — no API key required.

What You Get

Each data row includes:

Date & timestamp — ISO 8601
Value (0–100) and Classification (Extreme Fear / Fear / Neutral / Greed / Extreme Greed)
Regime label — extreme_fear, fear, neutral, greed, extreme_greed
BTC price (USD) — optional, correlates index with BTC spot price via CoinGecko

Plus a SUMMARY key in the key-value store with:

Current value and regime
Streak count — how many consecutive days in the current regime
7d / 30d rolling averages
Trend — improving, deteriorating, or stable vs 7 days ago
Regime breakdown — count of days in each regime over the lookback period

Use Cases

Entry timing — Extreme Fear readings (< 25) historically correlate with BTC bottoms
Exit signals — Extreme Greed (> 75) often precedes corrections
Strategy backtesting — Historical F&G data going back to 2018
Regime-aware trading bots — Adjust position sizing based on current sentiment
Telegram alerts — Get notified when F&G crosses your threshold

Sample Output

{
  "date": "2025-09-10",
  "timestamp": "2025-09-10T00:00:00+00:00",
  "value": 22,
  "regime": "extreme_fear",
  "classification": "Extreme Fear",
  "btc_price_usd": 54320.50
}

SUMMARY (key-value store):

{
  "current_value": 22,
  "current_regime": "extreme_fear",
  "streak_days": 4,
  "trend_7d": "deteriorating",
  "avg_7d": 28.4,
  "avg_30d": 41.2,
  "regime_breakdown": {
    "extreme_fear": 6,
    "fear": 12,
    "neutral": 8,
    "greed": 3,
    "extreme_greed": 1
  }
}

Input Parameters

Parameter	Type	Default	Description
`lookbackDays`	Integer	30	Days of history to fetch (1–365)
`includeBtcCorrelation`	Boolean	true	Fetch BTC/USD price alongside index
`alertThreshold`	Object	`{}`	Telegram alert trigger: `{"below": 20}` or `{"above": 80}`
`telegramBotToken`	String	—	Bot token for alerts
`telegramChatId`	String	—	Chat ID for alerts

Pricing

Pay-Per-Event: $0.0005 per day returned

30 days → $0.015
90 days → $0.045
365 days → $0.18

No API Key Required

Data comes from alternative.me — a free, public API with no authentication needed.

Technical Details

Runtime: Python 3.12 on Apify
Data source: Alternative.me Fear & Greed API + CoinGecko (BTC price)
Rate limiting: None — single API call per run
Typical run time: < 5 seconds

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