{"uid":"cap_0NpnTcZ5uBzPhixReRXe8","slug":"kawasaki-disease-classic-complete-criteria-calculator-mccrindle-2017-a34b5aa5","name":"Kawasaki Disease Classic/Complete Criteria Calculator (McCrindle 2017)","description":"AHA 2017 classic/complete Kawasaki disease (McCrindle). Complete when fever_days >= 4 and at least 4 of 5 principal features are true (oral mucosal changes, bilateral conjunctival injection, rash, extremity changes, cervical lymphadenopathy). Does not implement the incomplete-KD lab/echo algorithm or the 3-day clinician exception. magent does not examine the patient or read an echocardiogram. Not a medical device and not a diagnosis.","url":"https://api.magentlab.com/api/calc/kawasaki","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"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","required":["fever_days","oral_mucosal_changes","bilateral_conjunctival_injection","rash","extremity_changes","cervical_lymphadenopathy"],"properties":{"rash":{"type":"boolean","description":"Principal feature: rash — maculopapular, diffuse erythroderma, or erythema multiforme-like (McCrindle 2017). true or false as assigned by the caller. magent does not examine the patient."},"fever_days":{"type":"integer","description":"Duration of fever in days (integer 1-30). Classic complete KD requires fever_days >= 5 with >=4 principal features; with >=4 principal features the diagnosis may be made with 4 days of fever (McCrindle 2017). The 3-day clinician exception is not this tool."},"extremity_changes":{"type":"boolean","description":"Principal feature: erythema and edema of the hands and feet in the acute phase and/or periungual desquamation in the subacute phase (McCrindle 2017). true or false as assigned by the caller. magent does not examine the patient."},"oral_mucosal_changes":{"type":"boolean","description":"Principal feature: erythema and cracking of lips, strawberry tongue, and/or erythema of oral and pharyngeal mucosa (McCrindle 2017). true or false as assigned by the caller. magent does not examine the patient."},"cervical_lymphadenopathy":{"type":"boolean","description":"Principal feature: cervical lymphadenopathy (>=1.5 cm diameter), usually unilateral (McCrindle 2017). true or false as assigned by the caller. magent does not examine the patient."},"bilateral_conjunctival_injection":{"type":"boolean","description":"Principal feature: bilateral bulbar conjunctival injection without exudate (McCrindle 2017). true or false as assigned by the caller. magent does not examine the patient."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_M0oUZ4nD2_ghFugjHFijc","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Evaluates AHA 2017 criteria for classic/complete Kawasaki disease based on fever duration and five principal clinical features","exampleAgentPrompt":"My patient is a 3-year-old with 5 days of fever, oral mucosal changes, bilateral conjunctival injection, a rash, and cervical lymphadenopathy — no extremity changes. Does this child meet classic complete Kawasaki disease criteria by AHA 2017 McCrindle guidelines?","exampleUseCases":[{"title":"Emergency pediatric KD triage","prompt":"I have a child with 6 days of fever, strawberry tongue, bilateral conjunctival injection, a maculopapular rash, and hand edema but no cervical lymphadenopathy — run the AHA 2017 McCrindle complete Kawasaki disease criteria for me."},{"title":"Borderline 4-day fever case","prompt":"Child has exactly 4 days of fever, plus oral mucosal changes, rash, conjunctival injection, and extremity changes — no lymphadenopathy. Does this still qualify for classic complete Kawasaki disease under McCrindle 2017?"},{"title":"Teaching case feature count","prompt":"Walk through the classic KD criteria for a patient with 7 fever days, positive conjunctival injection, positive cervical lymphadenopathy, no rash, no oral changes, and no extremity changes — do they meet complete criteria?"}],"resultDescription":"Returns whether the classic/complete Kawasaki disease criteria are met under AHA 2017 McCrindle guidelines, based on fever duration (>=4 or >=5 days) and the count of the five principal clinical features (oral mucosal changes, bilateral conjunctival injection, rash, extremity changes, cervical lymphadenopathy). Does not implement the incomplete KD lab/echo algorithm or the 3-day clinician exception. Not a medical device or diagnosis.","failureModes":["Missing required query parameters (fever_days or any of the 5 boolean features) returns a 400-level error","fever_days outside integer range 1–30 may be rejected or produce undefined behavior","Incomplete KD cases (fewer than 4 features) are not further processed by the lab/echo algorithm — caller must handle separately","Boolean fields passed as strings instead of true booleans may cause parsing errors","Payment not fulfilled returns 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need a fast, rule-based evaluation of the AHA 2017 classic/complete Kawasaki disease criteria (McCrindle) for a patient with known clinical findings. Prefer this over general LLM reasoning for auditability and reproducibility. Do not use for incomplete KD cases requiring echocardiogram or lab-based supplemental criteria, or when the 3-day clinician exception applies.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:57:02.052Z","isFirstParty":false}