{"uid":"cap_t6MLo6Coi4jKrkYcH17pH","slug":"malnutrition-universal-screening-tool-must-calculator-daede711","name":"Malnutrition Universal Screening Tool (MUST) Calculator","description":"Stratton 2004 Malnutrition Universal Screening Tool (MUST) for adults. Three additive scores, max 6: BMI (>20 → 0, 18.5–20 → 1 including 20.0, <18.5 → 2); unplanned weight loss % last 3–6 months (<5 → 0, 5–10 → 1 including 10%, >10 → 2); acute disease no nutritional intake >5 days → 2. Risk 0 low, 1 medium, ≥2 high. Caller supplies BMI and weight-loss percent. Not a malnutrition diagnosis, diet order, or MUAC. magent does not weigh the patient.","url":"https://api.magentlab.com/api/calc/must","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":["bmi_kg_m2","weight_loss_percent","acute_disease_no_intake_gt_5_days"],"properties":{"bmi_kg_m2":{"type":"number","description":"Body-mass index in kg/m^2 (10-80). Caller-supplied; magent does not weigh the patient or compute BMI. Stratton 2004 MUST: >20 scores 0; 18.5-20 inclusive scores 1; <18.5 scores 2. BMI 20.0 scores 1; 20.1 scores 0."},"weight_loss_percent":{"type":"number","description":"Unplanned weight loss percent over the last 3-6 months (0-50). Caller-supplied; magent does not weigh the patient. Stratton 2004 MUST: <5 scores 0; 5-10 inclusive scores 1; >10 scores 2. 10% scores 1, not 2."},"acute_disease_no_intake_gt_5_days":{"type":"boolean","description":"Acute disease with no nutritional intake for more than 5 days (Stratton 2004 MUST). true scores 2; false scores 0."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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_6ELw8pRc2Y2cEHVDTkYTZ","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":"Computes the Stratton 2004 MUST score for adult malnutrition risk from BMI, unplanned weight loss percent, and acute disease status","exampleAgentPrompt":"Calculate the MUST malnutrition risk score for an adult patient with a BMI of 17.5 kg/m², unplanned weight loss of 8% over the last 3–6 months, and no acute disease causing nutritional interruption beyond 5 days.","exampleUseCases":[{"title":"Hospital admission malnutrition triage","prompt":"I need to screen a newly admitted patient for malnutrition using the MUST tool — their BMI is 18.2, they've had about 6% unplanned weight loss over the past few months, and they don't have an acute illness preventing eating for more than 5 days. What's their risk level?"},{"title":"ICU patient with prolonged no oral intake","prompt":"Calculate the MUST score for an ICU patient: BMI is 22.4, no significant recent weight loss (under 5%), but they've been on an acute illness protocol with no nutritional intake for 6 days now."},{"title":"Community dietitian nutrition screening","prompt":"Run a MUST nutritional screening for my patient — BMI is 16.8, they've lost about 12% of their body weight unintentionally over the last 3 to 6 months, and there's no acute disease affecting their food intake."}],"resultDescription":"Returns the total MUST score (integer 0–6), individual component scores for BMI, weight loss, and acute disease, and a risk category: 0 = low risk, 1 = medium risk, ≥2 = high risk of malnutrition.","failureModes":["BMI value outside valid range (10–80 kg/m²) returns validation error","weight_loss_percent outside valid range (0–50%) returns validation error","missing required query parameters returns 400 Bad Request","payment not provided or insufficient for x402 endpoint returns 402 Payment Required","boundary values (e.g. BMI exactly 20.0, weight loss exactly 10%) may be misunderstood by callers — endpoint follows Stratton 2004 rules strictly"],"whenToPreferThis":"Use this endpoint when you need a standards-compliant, reproducible Stratton 2004 MUST score computed server-side from caller-supplied BMI and weight loss percent, especially in agentic clinical workflows where auditability matters. Not appropriate for pediatric patients, MUAC-based assessments, or as a substitute for clinical diagnosis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T19:02:27.831Z","isFirstParty":false}