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magent Pack-Years Calculator
x402
magent Pack-Years Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Calculates NCI-defined pack-year smoking exposure from daily cigarette or pack consumption and years smoked
Price / call$0.005
Success—
StatusUnknown
How this service works
NCI pack-year smoking exposure: pack_years = packs_per_day x years_smoked. One pack per day for one year is one pack-year; two packs per day for 0.5 year is the same. Provide packs_per_day (0-10) or cigarettes_per_day (0-200; 20 cigarettes = 1 pack), not both, plus years_smoked (0-80). magent does not take a smoking history interview. Not a lung-cancer screening order, COPD diagnosis, or medical device.
Output
Returns a numeric pack-years value computed as (packs_per_day × years_smoked), following the NCI definition where 1 pack/day for 1 year equals 1 pack-year. If cigarettes_per_day is provided, it is first divided by 20 to convert to packs.
Example use cases
EHR smoking history summarization
“I need to convert a patient's smoking history into pack years — they smoked about 20 cigarettes a day for 35 years. What's their pack-year total?”
Research cohort exposure scoring
“For a study participant who smoked 2 packs a day for 10 years, what is their cumulative pack-year exposure?”
Clinical intake form automation
“A new patient reports smoking half a pack daily for 40 years. Can you compute their pack years for the intake record?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/pack_yearsWhen to prefer
Use this endpoint when you need a fast, programmatic NCI-standard pack-year computation from structured inputs (daily consumption + duration). It is not a lung cancer screening tool, COPD diagnostic, or medical interview — choose it for EHR enrichment, research scoring, or clinical documentation automation where you already have the two required numeric inputs.
Side effects
- Both packs_per_day and cigarettes_per_day supplied simultaneously — only one is accepted
- years_smoked missing from query params — required field
- Values outside clamped ranges (packs_per_day >10, cigarettes_per_day >200, years_smoked >80) may be clamped or rejected
- Payment not provided or x402 payment failure resulting in 402 response
- Invalid numeric types for parameters
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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