{"uid":"cap_G_ff6melL-InpL6as4I2R","slug":"wintergreen-x402-failure-patterns-knowledge-endpoint-8a90304f","name":"Wintergreen x402 Failure Patterns Knowledge Endpoint","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/knowledge/failure-patterns","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"_file_slug":{"type":"string"},"_route_slug":{"type":"string"}}},"responseSchema":{},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_oFS6Zulm2OXu0Aw7qxHdh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns payment-gated knowledge content about trading strategy failure patterns and kill battery rules for crypto quant systems, delivered via x402 micropayment on Base.","exampleAgentPrompt":"Pull the failure patterns guide from Wintergreen — I need to understand the kill battery rules and what signals indicate a crypto trading strategy has broken down and should be shut off.","exampleUseCases":[{"title":"Quant strategy kill battery review","prompt":"I'm running a crypto trading bot on Hyperliquid and want to know which of the 19 kill battery rules I should be monitoring — pull the failure patterns guide so I can set up proper shutdown triggers."},{"title":"Walk-forward validation failure modes","prompt":"I'm backtesting a mean-reversion strategy and keep getting good in-sample results but bad out-of-sample — fetch the Wintergreen failure patterns content so I can see what walk-forward validation failure patterns I might be running into."},{"title":"Risk management rule review before live trading","prompt":"Before I go live with my algo, I want to review the standard failure patterns and risk rules for crypto quant systems — grab the Wintergreen failure patterns knowledge so I can cross-check my setup."}],"resultDescription":"A knowledge document covering trading strategy failure patterns, including the kill battery (19 rules for strategy termination), walk-forward validation failure modes, and risk management guidelines for crypto quant systems. Returned as structured content after successful $1 USDC micropayment on Base.","failureModes":["HTTP 402 returned if no valid X-PAYMENT header is provided — agent must sign EIP-712 TransferWithAuthorization and retry","Invalid or expired payment signature results in rejected payment and no content","Incorrect file_slug or route_slug returns empty or mismatched content","Network errors on Base chain may delay payment confirmation","Content may be unavailable if the specific slug does not exist on the broker"],"whenToPreferThis":"Choose this endpoint when an AI agent or quant developer needs authoritative, curated documentation on crypto trading strategy failure patterns and kill battery rules, and is willing to pay $1 USDC per retrieval via the x402 micropayment protocol on Base. Prefer this over free web search when you need structured, practitioner-grade quant methodology content rather than generic articles.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T08:27:55.170Z","isFirstParty":false}