xml-sitemap

xml-sitemap is a skill for Claude Code, Codex from kostja94/marketing-skills. It costs 91 tokens per session (3,009 once invoked), scanned A, original, MIT.

A guide to creating and checking an XML sitemap, a file that lists the web pages a site wants search engines to discover. It covers sitemap indexes, page metadata, and declaring the sitemap in robots.txt.

In plain words
What is it for?
Use it to generate, audit, optimize, and submit sitemap.xml files, choose between one sitemap and a sitemap index, and connect the sitemap to robots.txt and Search Console.
Why use it?
It gives search engines a clear list of important pages, especially on large sites or sites whose pages are hard to reach through links. It can also provide one consistent source for the site's URLs.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to generate, audit, optimize, and submit sitemap.xml files, choose between one sitemap and a sitemap index, and connect the sitemap to robots.txt and Search Console.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kostja94/marketing-skills/sitemap
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add kostja94/marketing-skills --skill sitemap
Clone the repo
git clone --depth 1 https://github.com/kostja94/marketing-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for xml-sitemap

README.md
[![agentmods](https://agentmods.dev/badge/skills/kostja94/marketing-skills/sitemap/github.svg)](https://agentmods.dev/skills/kostja94/marketing-skills/sitemap)
Your own site
<a href="https://agentmods.dev/skills/kostja94/marketing-skills/sitemap"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/sitemap/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for xml-sitemap

Your own site · 80×15
<a href="https://agentmods.dev/skills/kostja94/marketing-skills/sitemap"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/sitemap.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,009 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00091 $0.03009
Opus 5 $0.00046 $0.01504
Sonnet 5 $0.00018 $0.00602
Haiku 4.5 $0.00009 $0.00301

Measured 8d ago against content hash 53b74e2e2e11, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

xml-sitemap scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -I https://example.com/sitemap.xml # Check Content-Type
Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/seo/technical/sitemap/SKILL.md · 265 lines

How it starts

The opening of the file, as written. The whole thing — 265 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SEO Technical: Sitemap

Guides sitemap creation, auditing, and optimization for search engine discovery.

When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.

Scope (Technical SEO)

  • Sitemap: Create XML sitemap; submit to Google Search Console
  • URL discovery: Help search engines find pages; especially important for large sites or poor internal linking

Task

Generate an XML Sitemap that complies with the sitemaps.org protocol from the project's page list, and declare it in robots.txt.

Initial Assessment

Check for project context first: If .claude/project-context.md or .cursor/project-context.md exists, read it for site URL and page structure.

Identify:

  1. Site URL: Base domain (e.g., https://example.com)
  2. URL count: Total indexable pages (single sitemap vs. sitemap index)
  3. Data source: Static config, CMS, file system, or hybrid

Precondition: Does the site need a sitemap?

Before generating, assess whether a sitemap is warranted. A sitemap is most valuable when:

  • Large site (hundreds+ pages) or new site with few backlinks
  • Deep or orphaned pages that internal links don't reach well
  • Rich media (images, videos, news) needing extension metadata
  • GSC shows growing "Discovered – not indexed" or "Not discovered" counts

Small sites (< 50 pages) with strong internal linking may not strictly need one, but creating a sitemap has near-zero cost and provides future-proof infrastructure. If in doubt, err on the side of creating.

1. Protocol Essentials

Item Spec
Single sitemap limit 50,000 URLs, 50MB (uncompressed)
Sitemap index When exceeding limit, split and have main index reference sub-sitemaps
Encoding UTF-8
URL format Full URL, same host, include https://
Required tags <loc>
Optional tags <lastmod>, <changefreq>, <priority>

Read the full file on GitHub · 265 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 265 lines · 91 tokens per session scan A 53b74e2e2e11

Subscribe to this mod's changes

xml-sitemap is a skill published in the GitHub repository kostja94/marketing-skills (967 stars, last pushed 3mo ago), licensed MIT. It adds 91 tokens to every session and 3,009 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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