What problem does it solve? SEO elements like title tags, canonicals, schema markup, and Core Web Vitals can silently change during deployments or content updates, causing ranking and traffic losses that go unnoticed for weeks. This Skill captures known-good baselines of SEO-critical page elements and diffs the live page against them to surface regressions immediately. ## Core Features & Use Cases - Baseline Capture: Snapshots title, meta description, canonical, robots directives, headings, JSON-LD schema, Open Graph tags, Core Web Vitals, HTTP status, and content hashes into a local SQLite database. - Rule-Based Comparison: Runs 17 comparison rules across CRITICAL, WARNING, and INFO severity levels to classify every detected change with recommended actions. - Change History: Stores all baselines and comparisons per URL so you can review when a change happened and trace regressions over time. - Use Case: Before a deployment, run a baseline on your key landing page; after the deploy, run a comparison to instantly catch a dropped canonical tag, an accidental noindex, or a removed schema block before rankings suffer. ## Quick Start Ask the assistant to capture an SEO baseline for your page, for example: run an SEO drift baseline on https://example.com and then compare it after my next deployment.
