{"uid":"cap_mGa0euWFb8GgVW4aIgw3_","slug":"menza-2009-hiv-acquisition-risk-score-for-msm-magent-45a1f519","name":"Menza 2009 HIV Acquisition Risk Score for MSM (magent)","description":"Menza 2009 HIV-acquisition score for MSM. Four caller-assigned flags: meth or poppers in the prior 6 months (11), current or prior bacterial STI (4), ≥10 male partners in the prior year (3), unprotected anal intercourse with a positive- or unknown-status partner in the prior year (1). Max 19. Integer score only; no named strata or PrEP cutoff. Not a diagnosis, PrEP order, or test-and-treat protocol. Not HIRI-MSM or SexPro. magent does not take a sexual history.","url":"https://api.magentlab.com/api/calc/menza","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":["meth_or_poppers_6mo","bacterial_sti","partners_ge_10_year","uai_positive_or_unknown_year"],"properties":{"bacterial_sti":{"type":"boolean","description":"Current diagnosis or history of bacterial STI (Menza 2009: gonorrhea, chlamydia, or syphilis) as assigned by the caller. true scores 4. magent does not take a sexual history."},"meth_or_poppers_6mo":{"type":"boolean","description":"Methamphetamine or inhaled nitrites (poppers) in the prior 6 months as assigned by the caller (Menza 2009). true scores 11. magent does not take a sexual history."},"partners_ge_10_year":{"type":"boolean","description":"Ten or more male sex partners in the prior year as assigned by the caller (Menza 2009). true scores 3. magent does not take a sexual history."},"uai_positive_or_unknown_year":{"type":"boolean","description":"Unprotected anal intercourse with a partner of positive or unknown HIV status in the prior year as assigned by the caller (Menza 2009). true scores 1. magent does not take a sexual history."}}}},"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_-jN0nEpi5PFtiairpLY2l","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 Menza 2009 HIV-acquisition integer risk score for men who have sex with men (MSM) from four caller-assigned binary flags.","exampleAgentPrompt":"Calculate the Menza 2009 HIV acquisition score for a patient who used meth in the last 6 months, has a history of bacterial STI, had fewer than 10 male partners in the past year, and did not have unprotected anal intercourse with a positive or unknown-status partner.","exampleUseCases":[{"title":"HIV risk stratification in sexual health clinic","prompt":"I need the Menza 2009 score for a patient: he used poppers in the last 6 months, has a current gonorrhea diagnosis, had 15 male partners in the past year, and reported unprotected anal intercourse with a partner of unknown HIV status. What's his score?"},{"title":"Research cohort risk scoring","prompt":"For our study data, can you compute the Menza 2009 HIV acquisition score for a participant who had no meth or poppers use, no bacterial STI, fewer than 10 partners last year, and no UAI with positive or unknown partners?"},{"title":"PrEP counseling decision support","prompt":"Score this patient on the Menza 2009 tool: he used methamphetamine in the past 6 months, no bacterial STI history, had 12 male partners this past year, but did not have unprotected anal intercourse with anyone of positive or unknown HIV status."}],"resultDescription":"An integer between 0 and 19 representing the patient's Menza 2009 HIV-acquisition risk score for MSM, calculated as the sum of: 11 (meth/poppers), 4 (bacterial STI), 3 (≥10 male partners), and 1 (UAI with positive/unknown partner), based on the four caller-supplied boolean flags.","failureModes":["Missing any of the four required boolean query parameters returns a validation error","Non-boolean values for flag parameters cause a schema validation failure","Network or server errors result in a non-200 HTTP status with no score returned"],"whenToPreferThis":"Use this endpoint when you need to apply the original Menza 2009 HIV-acquisition risk scoring algorithm specifically for MSM, and you have already collected and assigned the four binary risk factors. Prefer this over HIRI-MSM or SexPro when the Menza 2009 instrument is specifically required (e.g., for research protocol fidelity or clinical workflows referencing that instrument). Do not use this endpoint to collect a sexual history, order PrEP, or make diagnostic decisions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:07:20.707Z","isFirstParty":false}