Tool calls run locally against 67 pattern entries. Only chat messages go to Anthropic. API key stays in this tab.
Before you start
This is a research preview. The 67 Pattern entries load locally from this page.
If you choose Claude Sonnet 4.6 (cloud), your chat messages and API key go only to Anthropic's servers. Key is stored in this browser tab's memory (sessionStorage) and cleared on close.
If you choose Qwen 3 8B (WebGPU, local), nothing leaves your device. Model weights are fetched once from the MLC HuggingFace mirror and cached in your browser (IndexedDB). No API key needed.
Not for clinical use. Pattern entries are unreviewed drafts (needs_human_review: true on 67/67). Hybrid Pathologies (H.1–H.12) are pre-canonical. Do not present tool output as consensus clinical opinion.
Get one at console.anthropic.com. The key stays in this tab's memory and is cleared on close.
Cloud: requires API key below. Local: no key; first run downloads ~5 GB.