Seo sitemaps

Skill Hainrixz/claude-seo-ai/skills/seo-sitemaps

The SEO + AI-search (GEO/AEO) optimization toolkit for Claude Code — two-score audit + opt-in fixer. Built for 2026-2027.

Install

npx -y skills add Hainrixz/claude-seo-ai --skill seo-sitemaps

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What its author says it does

Copied from the file, not written here

Audit and generate sitemaps and discovery files — validate XML sitemap presence/size/extensions/lastmod, check robots.txt referencing and sitemap-to-canonical consistency, reconcile orphans against the link graph, and produce repaired sitemap entries plus a robots.txt Sitemap line. Module M17. Feeds the Search SEO score.

SKILL.md

4.2 KB, as published. Nobody here has run it

seo-sitemaps (M17)

Sitemaps are the discovery contract you hand the crawler — they should list exactly the canonical, indexable URLs and nothing else. Schema rules for related markup: references/schema-tier1.md.

Audits

Working from the PageSnapshot (rendered_dom if present, else raw_html) plus fetched /sitemap.xml and /robots.txt:

Presence & validity: locate XML sitemap(s) (/sitemap.xml, robots Sitemap: lines, sitemap index); parse as well-formed XML against the sitemaps.org schema.
Size limits: each sitemap <=50,000 URLs and <=50MB uncompressed; if exceeded, expect a sitemap index splitting the set.
Extensions: where relevant, validate image:, video:, and news: namespace entries (correct namespace declared, required child elements present).
lastmod accuracy: <lastmod> is valid ISO 8601 and reflects real last-modified time — not a build-time stamp on every URL (which trains crawlers to ignore it).
robots referencing: at least one absolute Sitemap: line in robots.txt.
Sitemap-to-canonical consistency: no URL in the sitemap is noindex, redirected, 4xx/5xx, or non-canonical (self-referencing canonical only). Cross-check indexability with M-indexability.
Orphan reconciliation: diff sitemap URLs against the internal link graph — flag indexable pages absent from the sitemap and sitemap URLs unreachable by internal links.

Fixes

AUTO: generate or repair XML sitemap entries (correct <loc>, accurate <lastmod> from observed last-modified data, valid image:/video: extension children where media exists) and add an absolute Sitemap: line to robots.txt. These are additive/deterministic diffs for fix.
PROPOSED: removing or splitting entries (e.g. dropping non-canonical/noindex URLs, sharding into a sitemap index) — drafted, accepted per-item.
ADVISORY: changing site-wide lastmod strategy or canonical decisions — described, never written by the tool.
Never fabricate lastmod times, media URLs, or canonical targets — pull from observed data, ask the user, or leave a clearly-marked TODO placeholder per the schema fixable contract.

Verification

Offline: node ${CLAUDE_SKILL_DIR}/../../scripts/parse-robots-sitemap.mjs --url <u> — method xml_parse: parses robots.txt + sitemap XML, checks well-formedness, size caps, namespace/extension validity, and the canonical/noindex consistency assertion.
When the required data tier (live fetch of sitemap/robots, or the resolved link graph) is unavailable, status is needs_api — never a false pass.

Findings

Emit findings per schema/finding.schema.json. Examples:

M17.sitemap.missing — no XML sitemap found at /sitemap.xml or in robots.txt (status fail, severity 3, fixable: auto, axis search, confidence established).
M17.robots.no_sitemap_line — sitemap exists but no Sitemap: line in robots.txt (status warn, severity 3, fixable: auto, axis search, confidence established).
M17.sitemap.noindex_url — a <loc> in the sitemap points to a noindex/non-canonical URL (status fail, severity 3, fixable: proposed, axis search, confidence established). Each finding: evidence.observed quotes the page/sitemap verbatim; verification.reproduce is the runnable command above; expected_impact is banded + confidence-tagged (no naked %).

Honesty

A sitemap is a discovery aid, not a ranking signal or an indexing guarantee — Google treats <lastmod>, <priority>, and <changefreq> as hints, and <priority>/<changefreq> are largely ignored, so don't promise ranking lift from tuning them (label any such tactic low-magnitude/directional).
Submitting a sitemap won't force indexing of low-quality or non-canonical pages; orphan and canonical hygiene matters more than sitemap size.

Gives 1 of the 12 instructions most seo skills give

Counted across 454 of the 460 authors here whose files we hold, read 2026-08-06

implement structured data using JSON-LDin 30 of 454, across 26 files
write unique meta descriptions under 160 charactersin 27 of 454, across 20 files
verify one H1 exists per pagein 24 of 454, across 15 files
maintain a single h1 per pagein 24 of 454, across 15 files
use JSON-LD format for all schema markupin 23 of 454, across 15 files
use descriptive anchor text for internal linksin 21 of 454, across 16 files
add descriptive alt text to imagesin 19 of 454, across 15 files
read product marketing context before auditingin 19 of 454, across 10 files
write unique title tags under 60 charactersin 19 of 454, across 14 files
add unique title and meta description per pagein 19 of 454, across 17 files
Reference the sitemap in robots.txthere, and in 19 of 454, across 18 files
verify core web vitals meet thresholdsin 17 of 454, across 9 files

Said here and by no other author read

emit findings using the finding schema
return needs_api status when required data is unavailable
validate xml sitemap presence and size limits
validate sitemap namespace extensions
verify lastmod values reflect real last-modified time
reconcile sitemap urls against internal link graph

Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once.