Crypto fear and greed index: today's value and history

$0.01 per call · failed calls are never charged · no account or API key needed

The Crypto Fear & Greed Index (0 = extreme fear, 100 = extreme greed) from alternative.me: today's value and label, the change against 1, 7 and 30 days ago, the low, high and average over the window, and the daily history (up to 90 days, default 30). Updated once a day. Use as a market-sentiment input for a trading agent, a dashboard or a daily brief; for live prices use price_token.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Try it with your own inputs

Days of history, 1-90 (default 30)

Uses one of your 25 free calls. Nothing is charged, and a call that fails is not counted.

Inputs

NameTypeDescription
daysintegerDays of history, 1-90 (default 30)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/crypto/fear-greed?days=30"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/crypto/fear-greed?days=30&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "value": 51,
  "classification": "Neutral",
  "date": "2026-10-24",
  "change": {
    "vs1d": 1,
    "vs7d": -17,
    "vs30d": 9
  },
  "range": {
    "low": 38,
    "high": 72,
    "average": 54.2,
    "days": 30
  },
  "nextUpdateSeconds": 62493,
  "history": [
    {
      "date": "2026-10-24",
      "value": 51,
      "classification": "Neutral"
    }
  ],
  "source": "alternative.me",
  "attribution": "Crypto Fear & Greed Index by alternative.me (https://alternative.me/crypto/fear-and-greed-index/)"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is crypto_fear_greed, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

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