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Glassnode Herfindahl Index (Decentralization Metric)
x402
Glassnode Herfindahl Index (Decentralization Metric) is a paid API for AI agents from x402.glassnode.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Returns the Herfindahl Index for a crypto asset, measuring supply concentration/decentralization as the sum of squared address shares of current supply.
Price / call$0.05
Success—
StatusUnknown
How this service works
Herfindahl Index — Herfindahl Index, originally a measure of competition, is adapted here as a metric for decentralization. It is defined as the sum of squared address shares of current supply across the network. Data by Glassnode.
Output
A time-series array of data points, each with a UNIX timestamp (t) and a scalar Herfindahl Index value (v) representing the sum of squared address shares of circulating supply at that interval. Lower values indicate more decentralized supply distribution; higher values indicate greater concentration.
Example use cases
Monitor Bitcoin whale concentration trends
“Can you check Bitcoin's Herfindahl Index over the past month and let me know if whale concentration is getting worse or improving? I want to see if large holders are accumulating or dispersing.”
Compare decentralization across crypto assets
“Pull the latest Herfindahl Index for Bitcoin, Ethereum, and Cardano so I can compare which network has the most decentralized supply distribution right now.”
Alert on supply concentration changes
“Fetch the Herfindahl Index for Ethereum from the last 7 days and flag any sharp movements that might indicate major address consolidation or distribution happening on the network.”
Technical details
Endpoint
GEThttps://x402.glassnode.com/v1/metrics/distribution/herfindahlWhen to prefer
Use this endpoint when you need a quantitative, Glassnode-sourced measure of supply concentration or decentralization for a specific crypto asset. It is ideal for on-chain analysts, portfolio managers, or researchers comparing the degree of wealth concentration across blockchain networks over time. Prefer this over generic holder-count or whale metrics when a single normalized index of address-share inequality is needed.
Side effects
- Missing required 'a' (asset) parameter returns a 400 or validation error
- Unsupported asset symbol (e.g. a non-indexed token) may return empty data or 404
- Invalid interval or format enum values result in a schema validation error
- Payment not fulfilled (x402 protocol) results in a 402 Payment Required response
- Rate limiting or quota exhaustion may return 429 Too Many Requests
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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