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Crypto Fear & Greed Index (alternative.me)

Crypto No key

AuthenticationNo key
Rate limitNo published numeric limit; index updates once per day.

Documentation: alternative.me ยท Checked Sep 13, 2026

About

The crypto Fear & Greed Index aggregates volatility, momentum, social media, surveys, and dominance into a daily 0-100 sentiment score. The API is completely free with no key: GET api.alternative.me/fng/ with optional limit/format parameters. Commercial use is allowed with attribution.

Details

No key needed. You can call it right away.

Auth: No key

Rate limit: No published numeric limit; index updates once per day.

Verified: 2026-09-13

Best for: Market sentiment widgets Contrarian signals Newsletters

Read the docs Back to catalog

Setup

  1. No signup or key needed.
  2. Call https://api.alternative.me/fng/ directly.
  3. Use ?limit=N&format=csv for history or spreadsheets.
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