{"uid":"cap_VAcTaomzArH-xr82A2H8T","slug":"darrylbots-agent-article-position-sizing-chapter-drift-spread-e6c674e1","name":"DarrylBots Agent Article – Position Sizing Chapter (Drift, Spread & Martingale Illusion Series)","description":"Darrylbots paid early access: Drift, Spread, and the Martingale Illusion, Chapter 6","url":"https://darrylbots.com/api/agent-article-position-sizing","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"article":{"slug":"drift-spread-polymarket-chapter-6","price":{"amount":"0.001","network":"Base","currency":"USDC","amount_atomic":"1000","network_caip2":"eip155:8453"},"title":"Position Sizing Without Superstition","series":"Drift, Spread, and the Martingale Illusion","status":"paid_early_access","payment":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0x0BF63F37b0f512839C001548dc66a6A99Bfc019B","scheme":"exact","protocol":"x402","facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"},"content_url":"https://darrylbots.com/bot-articles/drift-spread-polymarket/data/chapter-6.json","preview_url":"https://darrylbots.com/bot-articles/drift-spread-polymarket/chapters/chapter-6.html"},"chapter":{"id":"drift-spread-polymarket-chapter-6","title":"Position Sizing Without Superstition","chapter":6,"summary":"A paid chapter on converting prediction-market confidence into capped, auditable stakes without confusing aggression for edge.","series_title":"Drift, Spread, and the Martingale Illusion","agent_takeaways":["Entry price is the first sizing constraint in binary markets.","Kelly can inform a ceiling, but production bots need haircuts and hard caps.","Previous losses do not create edge; they only update state.","A zero-size decision is an active risk control, not inactivity.","Every paid-call payload should expose reason codes for stake, cap, and stop condition."]},"purchased":true}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_AbyG20jhbabitDGP_kTAZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a paid early-access chapter on position sizing for prediction-market trading bots, including agent-ready takeaways on Kelly criterion, hard caps, and stake reasoning codes.","exampleAgentPrompt":"Fetch the DarrylBots paid chapter on position sizing without superstition from the Drift, Spread, and Martingale Illusion series — I want the agent takeaways on Kelly criterion haircuts, hard caps, and stake reason codes for my Polymarket trading bot.","exampleUseCases":null,"resultDescription":"Returns a JSON payload containing the article slug, title, series name, paid early-access status, chapter summary, a list of agent-readable takeaways (covering entry price constraints, Kelly ceiling haircuts, loss-state reasoning, zero-size decisions, and reason codes), a content URL to the full JSON chapter, a preview HTML URL, and x402 payment metadata including asset address, pay-to address, and facilitator details.","failureModes":["Payment not completed or insufficient USDC balance – returns 402 Payment Required with payment instructions","Invalid or malformed properties parameter – may return empty or error response","Chapter content URL unavailable or server error – returns 5xx with no content","Network or Base chain payment verification failure – payment not confirmed, content not unlocked"],"whenToPreferThis":"Choose this endpoint when an AI trading agent or quant bot needs structured, agent-readable guidance on prediction-market position sizing, specifically Kelly criterion application with hard caps and auditable stake logic. Prefer over generic finance APIs when you need opinionated, bot-friendly takeaways rather than raw market data, and when your agent operates on Polymarket or similar binary markets and needs a principled, superstition-free sizing framework.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T00:33:07.536Z","isFirstParty":false}