{"uid":"cap_MX6FEdqIFzXEl4Ruup5i5","slug":"magent-vexus-grader-beaubien-souligny-2020-5e7400c9","name":"magent VExUS Grader (Beaubien-Souligny 2020)","description":"Beaubien-Souligny 2020 VExUS C only (not A, B, D, or E). Caller-assigned ivc_dilated (IVC ≥2 cm) plus hepatic, portal, and intra-renal Doppler each normal, mild, or severe. Grade 0 if the IVC is not dilated; 1 if dilated with zero severe patterns; 2 if exactly one severe; 3 if two or more are severe. magent does not perform ultrasound. Not an AKI diagnosis or a fluid-order. Not a medical device.","url":"https://api.magentlab.com/api/calc/vexus","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":["ivc_dilated","hepatic","portal","renal"],"properties":{"renal":{"enum":["normal","mild","severe"],"type":"string","description":"Intra-renal venous Doppler grade as assigned by the caller (Beaubien-Souligny 2020 Figure 1): normal (continuous flow); mild (discontinuous with a systolic and a diastolic phase); severe (discontinuous with only a diastolic phase during the cardiac cycle). magent does not perform ultrasound."},"portal":{"enum":["normal","mild","severe"],"type":"string","description":"Portal-vein Doppler grade as assigned by the caller (Beaubien-Souligny 2020 Figure 1 caption): normal (pulsatility fraction not in the mild or severe bands); mild (velocity variation 30 to <50%); severe (variation ≥50%). magent does not perform ultrasound."},"hepatic":{"enum":["normal","mild","severe"],"type":"string","description":"Hepatic-vein Doppler grade as assigned by the caller (Beaubien-Souligny 2020 Figure 1): normal (not mild and not severe; triphasic S > D toward the liver); mild (S component lower in magnitude than D but still toward the liver); severe (S component reversed, toward the heart). magent does not perform ultrasound."},"ivc_dilated":{"type":"boolean","description":"Whether the IVC is dilated as assigned by the caller. Dilated iff maximal IVC diameter ≥2 cm (Beaubien-Souligny 2020). true or false. Grade 0 whenever this is false, regardless of Doppler. magent does not measure IVC."}}}},"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_GcfOkvPo-x1NwA1w-L6J9","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 VExUS grade (0–3) from caller-supplied IVC dilation status and hepatic, portal, and intra-renal Doppler grades using the Beaubien-Souligny 2020 criteria.","exampleAgentPrompt":"Calculate the VExUS grade for a patient whose IVC is dilated (≥2 cm), hepatic vein Doppler is severe, portal vein is mild, and intra-renal Doppler is normal.","exampleUseCases":[{"title":"ICU fluid management decision support","prompt":"My ICU patient has a dilated IVC, the hepatic vein Doppler is severe, portal vein is severe, and intra-renal is mild — what's their VExUS grade?"},{"title":"Grade zero confirmation for non-dilated IVC","prompt":"The patient's IVC is not dilated — hepatic is normal, portal is mild, renal is normal — can you confirm the VExUS grade?"},{"title":"Single severe pattern grading","prompt":"IVC is dilated, hepatic vein Doppler is normal, portal vein Doppler is severe, and intra-renal Doppler is mild — what VExUS grade does that give?"}],"resultDescription":"Returns a VExUS grade integer (0, 1, 2, or 3): 0 if IVC is not dilated; 1 if IVC is dilated with no severe Doppler patterns among hepatic, portal, and renal; 2 if exactly one of those three is severe; 3 if two or more are severe.","failureModes":["Missing required query parameters (ivc_dilated, hepatic, portal, renal) returns a 400-level error","Invalid enum values for hepatic, portal, or renal (anything other than 'normal', 'mild', 'severe') cause validation failure","Non-boolean value for ivc_dilated causes a parameter error","Payment not included or insufficient USDC causes a 402 Payment Required response"],"whenToPreferThis":"Use this endpoint when you have already performed point-of-care ultrasound and assigned Doppler grades yourself and need the official Beaubien-Souligny 2020 VExUS C grading logic applied instantly and consistently. Prefer this over manual lookup when embedding VExUS scoring in clinical decision-support agents, documentation tools, or research pipelines. Not appropriate if you need to perform ultrasound interpretation, diagnose AKI, or use VExUS variants A, B, D, or E.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:14:00.010Z","isFirstParty":false}