Schema-validated structured-data extraction from free text over its OWN on-device WebGPU-only WebLLM model (default Qwen3-1.7B-q4f16_1-MLC): five zod templates (contact, event, review, recipe, job), useGenerateObject json mode with maxRetries 3 retry/self-correction and a visible attempts counter, and an artifacts canvas that docks the validated JSON into a sortable data table + a chart built from the extraction's REAL numeric data (documented empty-chart state otherwise). Ships a justified block-local WebLLM catalog slice (model-catalog.ts) + the five templates + deriveArtifacts (templates.ts). Models download only behind an explicit Load action. Split from ui/blocks/agent-structured-data (Data Extractor mode).
pnpm dlx shadcn@latest add "https://localmode.ai/r/ui/blocks/agents/data-extractor.json"