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Arch Tools — Crypto Fear & Greed Index
x402
Arch Tools — Crypto Fear & Greed Index is a paid API for AI agents from archtools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Fetches the current or historical Crypto Fear & Greed Index values to gauge overall cryptocurrency market sentiment
Price / call$0.01
Success—
StatusUnknown
How this service works
Arch Tools — crypto-fear-greed
Output
Returns one or more Fear & Greed Index entries, each containing a numeric score (0–100), a sentiment label (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), and a timestamp. The number of entries returned corresponds to the 'limit' parameter, with limit=1 returning only the current reading.
Example use cases
Daily crypto market sentiment check
“What's the crypto fear and greed index today? I want to know if the market is currently fearful, neutral, or greedy before I decide whether to rebalance my portfolio.”
Historical sentiment trend analysis
“Can you pull the last 30 days of crypto fear and greed index readings? I want to see how market sentiment has trended over the past month.”
Automated trading signal integration
“Get me the current crypto fear and greed index value — my trading bot uses it to decide whether to enter or exit positions, so I need the most recent number and its label.”
Technical details
Endpoint
POSThttps://archtools.dev/v1/tools/crypto-fear-greedWhen to prefer
Choose this endpoint when you need a quick, paid-per-call lookup of the Crypto Fear & Greed Index without managing your own data pipeline or API keys. It is ideal for AI agents that need real-time or recent historical market sentiment in a single lightweight call, especially within workflows already using USDC micropayments on Base. Prefer alternatives if you need very deep historical data, raw on-chain sentiment signals, or free access to the index.
Side effects
- Invalid limit value (non-integer or out-of-range) may return a 400 error
- Upstream data provider unavailability may cause delayed or missing index data
- Payment failure over x402/USDC may result in 402 response before data is returned
- Requesting more historical entries than are available may return fewer results than requested
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | Number of historical entries (1 = current) |
Tags
x402
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