Data

Crypto Fear & Greed Index

fear-greed.hergertsynthora.com

Get the current crypto Fear and Greed index (0-100) with its classification label, relayed from the public alternative.me feed. POST /service with a JSON limit field; the first 3 calls per wallet are free via the X-WALLET header.

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Real-time crypto Fear & Greed index (0-100) with classification and history.

POST

https://fear-greed.hergertsynthora.com/service

Example request body

Service information

Provider: fear-greed.hergertsynthora.com
Category: Data
Uptime (30 days): 100%
Avg response time (30 days): 651 ms
Information updated: Sep 11, 2026

Transactions · 30 days

Volume: 0 USDC
Transactions: 0
Payer addresses: 0

Based on Base USDC records and updated hourly. This does not represent fulfilled sales.

Change history

Changes detected by automated probes across endpoints. Review receiving address changes before paying.

Receiving address
/service
Sep 3, 2026
Before
0x6d9f318463168ff637b50e5b9a21392e97c7c167
After
0xef879bfd6c4accb8f795136de90246e1ec245e06
Receiving address
/service
Aug 25, 2026
Before
0x10800a5a5b9d72251566ec651e862a8b4b427de0
After
0x6d9f318463168ff637b50e5b9a21392e97c7c167

Service tags

current

crypto

fear

greed

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