# Wintergreen x402 Quant Pulse

> Wintergreen x402 Quant Pulse is a paid API for AI agents from x402.wintergreen.uk, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns a snapshot of crypto trading intelligence including Hyperliquid signals, quant methodology guides, and market microstructure insights, gated by a $0.005 USDC micropayment per call.

## Facts

- Endpoint: GET https://x402.wintergreen.uk/api/v1/quant/pulse
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wintergreen-x402-quant-pulse-1b8a0442
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J0dtLxagCajJPSqt8m021

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability wintergreen-x402-quant-pulse-1b8a0442
```

Example prompt: Pull the latest Hyperliquid quant pulse — I want to see funding divergence signals, any liquidation clusters, and the current regime detection status for my crypto trading setup.

## When to prefer this

Choose this endpoint when an AI agent needs on-demand crypto trading intelligence — particularly Hyperliquid-specific signals like funding divergence or liquidation clusters — and can handle x402 micropayment flows. Ideal for agents with embedded crypto wallets that want pay-per-call access without a subscription, and for quant workflows needing regime detection or Kelly-sized risk management data in a single call.

## Known failure modes

- HTTP 402 returned if payment header is missing or invalid — agent must sign EIP-712 TransferWithAuthorization and retry with X-PAYMENT header
- Incorrect USDC amount or wrong Base chain address causes payment rejection
- Stale or cached signals if market conditions change faster than polling interval
- Empty or minimal response schema means output structure may vary and require flexible parsing
- Network timeout if Base blockchain confirmation is slow

## How this service works

Payment-gated crypto trading intelligence for AI agents.
    
## Categories
- **Hyperliquid Signals**: Real-time funding divergence, lead-lag correlation, liquidation clusters, session volume area levels
- **Quant Methodology**: Backtesting walk-forward validation, strategy generation with kill battery (19 rules), risk management with Kelly sizing, regime detection, execution frameworks, agent orchestration
- **Market Insights**: 22 crypto microstructure observations — funding, liquidation, orderbook, regime, flow, anomaly
- **Power Markets**: ERCOT field guide, merit-order model, duck curve analysis
- **Career Guides**: Firefighter oral board prep, medical coding, ATSA, contractor estimating
- **Trust Scoring**: x402 endpoint verification, P2D badges

## Payment
All paid endpoints return HTTP 402 with USDC on Base (eip155:8453). 
Sign EIP-712 TransferWithAuthorization and retry with X-PAYMENT header.
PayTo: 0xAe9834d71F1Bd989A0dc17593451af823E31CeeD

## Output

A structured payload containing real-time Hyperliquid signals (funding divergence, lead-lag correlations, liquidation clusters, session volume areas), quantitative methodology content (backtesting frameworks, 19-rule kill battery, Kelly sizing, regime detection), and 22 crypto microstructure observations covering funding, liquidations, orderbook, flow, and anomalies. Delivered as JSON after a $0.005 USDC micropayment on Base.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "format": {
   "enum": [
    "json"
   ],
   "type": "string",
   "description": "Optional response format hint (json). No required inputs."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wintergreen-x402-quant-pulse-1b8a0442/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.wintergreen.uk](https://www.zero.xyz/host/x402.wintergreen.uk/llms.txt)