# Wintergreen x402 Session VA Levels

> Wintergreen x402 Session VA Levels is a paid API for AI agents from x402.wintergreen.uk, paid per call via x402, $0.002/call, status down (last checked 2026-09-16).

Returns payment-gated quantitative session value area (VA) levels for trading and market analysis, delivered via x402 USDC micropayment.

## Facts

- Endpoint: GET https://x402.wintergreen.uk/api/v1/quant/session-va-levels
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wintergreen-x402-session-va-levels-9f6ca077
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0W5dKhy2JA56nnHfoGwl8

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-session-va-levels-9f6ca077
```

Example prompt: Pull the current session value area levels — VA high, VA low, and point of control — from Wintergreen's quant feed so I can set my trading zones for today.

## When to prefer this

Choose this endpoint when you need session-level value area (VA) data for quantitative trading strategies and are comfortable paying $0.01 USDC per call via x402 micropayment. Prefer this over free alternatives when you need reliable, structured VA levels without scraping or manual calculation.

## Known failure modes

- Payment not received or USDC balance insufficient — 402 Payment Required returned
- Invalid or expired session token — authentication failure
- Session data not yet computed for current period — empty or null response
- Rate limiting if called excessively within a session window
- Network timeout if upstream data provider is unavailable

## 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

Returns quantitative session value area (VA) levels including VA High, VA Low, and Point of Control (POC) for the current or specified trading session, sourced from Wintergreen's payment-gated market analysis feed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "symbol": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wintergreen-x402-session-va-levels-9f6ca077/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)