Cancer patient open-sources Polaris: 34 agents, 91k lines of code managing her own treatment
nodosenlared · x · 2026-09-23
An engineer with metastatic cancer has open-sourced Polaris, an agentic system she built to manage her own diagnosis, with the clinical goal of reaching NED (no evidence of disease).
- Scale: started June 20, now 34 agents, 91,000 lines of code plus 44,000 lines of tests, 558 commits in the last month alone
- Setup: runs 24/7 on a Mac mini at home; the public repo (AGPL-3.0) regenerates itself on every change; clinical files stay private
- Architecture: four pieces — a unified entry point (chat/voice/email), a clinical Goal, an expert-dispatching module, and more; a router assigns Claude models (Fable, Opus, Sonnet, Haiku) per task
- Example: for every lesion, Polaris generates a card comparing prior CT and PET scans so a radiologist can review in minutes; a radiologist is validating everything
The repo is public and she welcomes contributions.
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