{"uid":"cap_f15ImCmyKW_S3gPyZxaib","slug":"wintergreen-x402-methodology-prompt-endpoint-f983df6f","name":"Wintergreen x402 Methodology Prompt 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/methodology/prompt/%7Bpack_id%7D/%7Bprompt_idx%7D?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"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":"unknown","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_hUUV79vSyCn08ZnATb-zF","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":"Delivers a specific prompt or intelligence pack (by pack ID and prompt index) from a curated library of crypto trading, quant methodology, and market insights, gated behind a $0.50 USDC micropayment per call.","exampleAgentPrompt":"Pull pack 'hyperliquid-signals' prompt index 3 from Wintergreen — the one covering liquidation cluster methodology — and pay the $0.50 USDC fee automatically so I can use it in my trading strategy.","exampleUseCases":[{"title":"Crypto funding divergence signal lookup","prompt":"Fetch the Hyperliquid funding divergence signal prompt from Wintergreen — pack 'hyperliquid-signals', prompt index 0 — and pay the micropayment so I can see the full methodology."},{"title":"Quant backtesting methodology retrieval","prompt":"Get me the walk-forward backtesting validation prompt from the Wintergreen quant methodology pack, prompt index 2, and handle the USDC payment automatically."},{"title":"ERCOT power market field guide access","prompt":"Retrieve the ERCOT duck curve analysis prompt from Wintergreen's power markets pack — prompt index 1 — I need it for my energy trading model and I'm fine paying the $0.50 fee."}],"resultDescription":"Returns the full text content of the requested prompt or intelligence pack entry — e.g. a detailed methodology write-up, signal description, framework specification, or market analysis — corresponding to the specified pack_id and prompt_idx, after successful USDC payment verification.","failureModes":["HTTP 402 returned if payment header is missing or invalid — agent must sign EIP-712 TransferWithAuthorization and retry","Invalid pack_id returns 404 or error indicating pack not found","Out-of-range prompt_idx returns error if index exceeds available prompts in pack","Insufficient USDC balance or failed on-chain authorization causes payment rejection","Network or Base chain congestion may delay payment confirmation"],"whenToPreferThis":"Choose this endpoint when an AI agent needs specific, curated crypto trading intelligence, quant methodology prompts, or market microstructure insights on demand and can handle x402 micropayment flows. Prefer it over free sources when depth, structure, and validated methodology (e.g. 19-rule kill battery, Kelly sizing) are required. Best suited for agents with built-in x402 payment capability targeting Hyperliquid or ERCOT-adjacent strategies.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T18:30:05.645Z","isFirstParty":false,"canonicalSlug":"wintergreen-x402-methodology-prompt-endpoint-f983df6f"}