art-defv

Fast deterministic web utilities for autonomous agents: web metadata extraction and website change detection. Web Metadata extracts Open Graph, JSON-LD, canonical URLs, robots directives, headings, language, and page metadata. Web Change provides baseline capture, changed/unchanged detection, hashes, and deterministic diffs. Both are designed for recurring agent workflows such as SEO crawlers, metadata ingestion, price monitoring, documentation monitoring, competitor tracking, and RAG preprocess

Agent-native current web research with citations, structured QA, and unresolved-fact handling.