{"uid":"cap_QnQLL1SeFRToeRDP2EQLf","slug":"wintergreen-x402-content-broker-25237d5f","name":"Wintergreen x402 Content Broker","description":"Payment-gated crypto trading intelligence for AI agents.\n    \n## Categories\n- **Hyperliquid Signals**: Real-time funding divergence, lead-lag correlation, liquidation clusters, session volume area levels\n- **Quant Methodology**: Backtesting walk-forward validation, strategy generation with kill battery (19 rules), risk management with Kelly sizing, regime detection, execution frameworks, agent orchestration\n- **Market Insights**: 22 crypto microstructure observations — funding, liquidation, orderbook, regime, flow, anomaly\n- **Power Markets**: ERCOT field guide, merit-order model, duck curve analysis\n- **Career Guides**: Firefighter oral board prep, medical coding, ATSA, contractor estimating\n- **Trust Scoring**: x402 endpoint verification, P2D badges\n\n## Payment\nAll paid endpoints return HTTP 402 with USDC on Base (eip155:8453). \nSign EIP-712 TransferWithAuthorization and retry with X-PAYMENT header.\nPayTo: 0xAe9834d71F1Bd989A0dc17593451af823E31CeeD","url":"https://x402.wintergreen.uk/api/v1/tag/%7Btag%7D","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_aQlFg6LHwaVSTDChipvY2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Delivers payment-gated crypto trading intelligence, quant methodology guides, market microstructure insights, and niche career/power-market content via x402 micropayment on Base.","exampleAgentPrompt":"Pull the Hyperliquid funding divergence signals and liquidation cluster data using the Wintergreen x402 broker — I want the tag for those real-time crypto microstructure observations, and go ahead and authorize the USDC micropayment on Base to unlock them.","exampleUseCases":[{"title":"Hyperliquid real-time signal retrieval","prompt":"Fetch me the latest Hyperliquid funding divergence and lead-lag correlation signals from Wintergreen — pay the micropayment on Base and give me the current session volume area levels."},{"title":"Quant strategy methodology deep-dive","prompt":"I need the full quant backtesting walk-forward validation guide from Wintergreen, including the 19-rule kill battery and Kelly sizing framework — unlock it with the USDC payment and send me the content."},{"title":"ERCOT power market field guide","prompt":"Get me the Wintergreen ERCOT merit-order model and duck curve analysis — pay the $0.002 on Base and return the full power markets field guide."}],"resultDescription":"Returns structured content documents for the requested tag — which may include trading signals (funding divergence, liquidation clusters, lead-lag correlations, session volume levels), quant methodology writeups (backtesting, kill battery rules, Kelly sizing, regime detection), crypto microstructure observations, power market analyses (ERCOT, merit-order, duck curve), or career guides, depending on the tag queried. Access is gated behind a successful EIP-712 USDC payment on Base.","failureModes":["HTTP 402 returned if payment header is missing or invalid — agent must sign EIP-712 TransferWithAuthorization and retry","Invalid or unrecognized tag returns an error or empty response","Insufficient USDC balance on Base prevents payment authorization","Stale or replayed payment signature rejected by the broker","Network latency on Base blockchain delays payment confirmation"],"whenToPreferThis":"Choose this endpoint when an AI agent needs on-demand, micropayment-gated crypto trading intelligence (especially Hyperliquid-specific signals), quant methodology guides, or niche domain content (power markets, career guides) without a subscription. Ideal for agents that support x402 payment flows on Base and need pay-per-call access to specialized content not available from free APIs or general knowledge bases.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:40:39.598Z","isFirstParty":false}