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VACS Index 1.0 Calculator (Tate 2013)
x402
VACS Index 1.0 Calculator (Tate 2013) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Computes the Veterans Aging Cohort Study (VACS) Index 1.0 score (0–164) for HIV-positive patients using age, CD4, HIV-1 RNA, hemoglobin, FIB-4, eGFR, and hepatitis C co-infection status.
Price / call$0.005
Success—
StatusUnknown
How this service works
Tate 2013 VACS Index 1.0 (not VACS 2.0): age, CD4, HIV-1 RNA, hemoglobin g/dL, caller-assigned FIB-4 and eGFR, and hepatitis C. Points 0-164. No published named mortality bands. magent does not compute FIB-4 or MDRD/CKD-EPI and does not order ART.
Output
Returns an integer VACS Index 1.0 total score between 0 and 164, derived by summing points from each of the seven clinical inputs per the Tate 2013 published scoring bands. Higher scores indicate greater mortality risk. The endpoint does not return named risk bands, percentile ranks, or treatment recommendations.
Example use cases
HIV clinic mortality risk stratification
“I need a VACS Index 1.0 score for a 62-year-old HIV patient: CD4 is 180 cells/mm³, viral load is 95000 copies/mL, hemoglobin 13.2 g/dL, FIB-4 score 2.1, eGFR 48, no hepatitis C co-infection.”
Longitudinal treatment response tracking
“Can you compute the VACS 1.0 score for my patient who is 51 years old, CD4 of 450, HIV RNA under 500 copies/mL, hemoglobin 14.5 g/dL, FIB-4 of 1.2, eGFR 65, hepatitis C negative — this is their follow-up score after starting ART.”
HIV research cohort risk scoring
“For a study cohort member: age 70, CD4 count 45 cells/mm³, HIV-1 RNA 250000 copies/mL, hemoglobin 9.8 g/dL, FIB-4 of 4.1, eGFR 28, hepatitis C positive — give me the Tate 2013 VACS Index 1.0 total score.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/vacs_1When to prefer
Use this endpoint when you need the original Tate 2013 VACS Index 1.0 (not VACS 2.0) for HIV-positive adult patients and already have pre-computed FIB-4 and eGFR values available. Prefer this over manual lookup tables when integrating VACS scoring into automated clinical pipelines or research workflows. Do not use if you need the updated VACS Index 2.0, or if you need the system to compute FIB-4, MDRD, or CKD-EPI from raw labs — those must be supplied by the caller.
Side effects
- Missing required parameters (age, CD4, HIV-1 RNA, hemoglobin, FIB-4, eGFR, or hepatitis_c) returns a validation error
- Out-of-range values (e.g. age <18, CD4 >2000, hemoglobin >22) may be rejected or produce unexpected results
- FIB-4 or eGFR values not pre-computed by caller will produce errors since the endpoint does not derive them
- Payment failure (x402) if USDC balance is insufficient
- Boolean hepatitis_c passed as string instead of true/false may cause a schema error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
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