# ByKaranteli VPIN Flow Toxicity

Order flow toxicity (VPIN) history for BTC, ETH and SOL: 90-day daily VPIN track with closes plus the last 500 volume buckets.

- Status: Listed — not yet verified
- Category: [Content Paywalls](https://x402looker.com/category/content-paywalls/)
- Website: https://bykaranteli.com

## What it does

Order flow toxicity (VPIN) history for BTC, ETH and SOL: 90-day daily VPIN track with closes plus the last 500 volume buckets.

Audience: ai-agents, developers. Tags: story, bykaranteli, vpin, flow.

## Pricing

- Pricing model: per-request
- Price hint: $0.002/request
- Accepted tokens: USDC
- Chain: base
- Facilitator: coinbase-cdp

## How agents pay

1. The agent sends a plain request and receives an HTTP 402 response describing the price and payment requirements.
2. The agent signs a payment payload for the exact amount on base and attaches it to a retried request.
3. The facilitator verifies and settles the payment, then the service returns the paid response.

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## Facet hubs

- Chain hub: [Base services](https://x402looker.com/chain/base/)
- Facilitator profile: [Coinbase Cdp](https://x402looker.com/facilitator/coinbase-cdp/)
- Price band: [Micro ($0.01 or less per request)](https://x402looker.com/price-band/micro/)

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Last updated: 2026-09-23
Last checked: 2026-09-28 — reachable. Weekly automated check, not continuous monitoring.