{"uid":"cap_25qY38bQSGve28L1FBcVR","slug":"bot-bazaar-kelly-criterion-position-sizer-64a37fa8","name":"Bot Bazaar Kelly Criterion Position Sizer","description":"Compute full-Kelly, half-Kelly, and quarter-Kelly position allocation percentages from win probability and payoff ratio.","url":"https://bot-bazaar.fly.dev/v1/x402/kelly-criterion-sizing?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"win_prob":{"type":"string","description":"Win probability (0.0-1.0)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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_rqxhshvU8Yc17i92vVP80","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":"Computes full-Kelly, half-Kelly, and quarter-Kelly position sizing percentages from a given win probability and payoff ratio.","exampleAgentPrompt":"I think this trade has a 62% chance of winning and the payoff ratio is 2.5 to 1 — can you run the Kelly criterion and give me the full, half, and quarter-Kelly position sizes?","exampleUseCases":[{"title":"Sizing a high-conviction stock trade","prompt":"I have a trade idea with a 58% win probability and a 3:1 payoff ratio — what are the full, half, and quarter-Kelly allocations I should consider for my portfolio?"},{"title":"Sports betting stake calculator","prompt":"If I think a team has a 65% chance of winning and the odds imply a 1.8x payoff, what does Kelly criterion say I should bet — give me all three Kelly fractions."},{"title":"Conservative position sizing for options","prompt":"My win rate on this options strategy is 55% and the average winner is 2x the average loser — use Kelly to tell me the quarter-Kelly allocation so I can stay conservative."}],"resultDescription":"Returns full-Kelly, half-Kelly, and quarter-Kelly allocation percentages — the fraction of a bankroll or portfolio that the Kelly criterion recommends wagering or investing, at three risk levels (full, half, quarter). All three values are computed from the provided win probability and payoff ratio.","failureModes":["Missing win_prob query parameter returns an error","win_prob outside [0.0, 1.0] range causes validation failure","win_prob of 0 or 1 (degenerate probabilities) may produce undefined or extreme Kelly values","Payoff ratio not provided may result in a default or error depending on API behavior","Non-numeric win_prob string causes type error"],"whenToPreferThis":"Use this endpoint when you need a quick, pure-computation Kelly criterion result without building the math yourself — especially useful for agents doing real-time trade sizing, betting stake calculation, or portfolio allocation. Prefer this over a general math tool when you need all three Kelly fractions (full, half, quarter) in a single call and want a financial-domain-aware computation with no side effects.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:42:00.902Z","isFirstParty":false,"canonicalSlug":"bot-bazaar-kelly-criterion-position-sizer-64a37fa8"}