seo-index-validationlisted

# seo-index-validation Diagnose and fix **crawl and index health** for a *deployed* site, then verify the fix in Google Search Console (GSC). The scope is deliberately narrow: the reasons Google gives for *not indexing* a page (404, redirect, soft-404, duplicate or wrong canonical, discovered-not-indexed) and the live-infrastructure causes behind them. This is **not** a keyword, content, or backlink skill. If asked for those, say so and stop. ## Operating principle - **Reproduce before you believe.** Every diagnosis is grounded in a live HTTP probe or the GSC report, never in memory. Tag each finding *measured*, *derived*, or *assumed*. - **Exact URLs, not buckets.** A GSC alert names a *reason* ("Not found (404)"). The load-bearing output is the *exact affected URL(s)*. Get them. - **Separate benign from real.** Most redirects Google reports are correct canonicalization. Do not "fix" them (see the table below). - **Automate the readable half; browse only where there is no API.** Default to curl and the Search Console API. The browser is only for the three GSC actions that have no API. - **Confirmation-gate live changes.** Toggling a CDN or host setting, or shipping a redirect, is outward-facing. Propose, get an explicit yes, then act. Never unattended. ## What is automatable vs browser-only (verified against official docs) | Step | curl / API? | How | |------|-------------|-----| | Live status, redirects, soft-404, homepage canonical presence, sitemap resolution | yes,