# Wintergreen x402 Content Broker – Combo Bundle

> Wintergreen x402 Content Broker – Combo Bundle is a paid API for AI agents from x402.wintergreen.uk, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-12).

Delivers a payment-gated bundle of crypto trading intelligence content (Hyperliquid signals, quant methodology, market microstructure insights, and more) for AI agents via x402 micropayment protocol on Base.

## Facts

- Endpoint: POST https://x402.wintergreen.uk/api/v1/bundle/combo/%7Bbundle_id%7D
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wintergreen-x402-content-broker-combo-bundle-c46d6f39
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-HHlKRA7aJuA4sldCN1JR

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-content-broker-combo-bundle-c46d6f39 -d '<json body>'
```

Example prompt: Pull the Hyperliquid combo bundle from Wintergreen — I want the funding divergence signals, liquidation cluster levels, and the quant strategy framework with Kelly sizing; pay the $2 USDC fee using my Base wallet.

## When to prefer this

Choose this endpoint when an AI agent needs on-demand access to curated crypto trading intelligence (Hyperliquid signals, quant frameworks, microstructure data) or niche domain guides (power markets, career prep) and can autonomously handle x402 USDC micropayments on Base. Prefer this over free data sources when you need structured, expert-curated methodology content rather than raw market data feeds. Best suited for agents with wallet capability on Base network.

## Known failure modes

- HTTP 402 returned if payment header is missing or invalid — agent must sign EIP-712 TransferWithAuthorization and retry
- Invalid bundle_id returns 404 or empty payload
- Insufficient USDC balance causes payment authorization failure
- Wrong chain (not Base/eip155:8453) causes payment rejection
- Expired or replayed payment authorization rejected by smart contract
- Malformed X-PAYMENT header causes 400 error

## 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 content payload covering the requested bundle category — which may include real-time Hyperliquid trading signals (funding divergence, liquidation clusters, session volume levels), quant methodology documents (backtesting frameworks, Kelly sizing, regime detection), crypto microstructure observations, ERCOT power market analysis, or career guide content depending on bundle_id. Returned after successful EIP-712 USDC payment on Base.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wintergreen-x402-content-broker-combo-bundle-c46d6f39/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)