Top 7 Claude Code Skills for SEO & Marketing in 2026

Agent skills have quietly become the fastest way to give Claude Code real marketing expertise. Since Anthropic launched Agent Skills as an open standard in October 2025, thousands of SKILL.md instruction packages have appeared on GitHub, covering everything from full technical SEO audits to GEO/AEO optimization for AI search, paid ads analysis, and brand voice enforcement. The catch? Quality varies wildly. Research published in 2026 found that roughly 26% of community skills carry at least one vulnerability, and many more simply don't do what their descriptions claim. That's why we built this 2026 list: seven skills and skill platforms that genuinely help SEO and marketing teams get repeatable, reliable results from Claude Code. At the top sits SkillzBench, a free directory and verification platform that helps you find, vet, and equip skills safely - followed by six of the strongest SEO and marketing skills the ecosystem has to offer this year.

#1 SkillzBench — Editors' choice

SkillzBench is AIQ Labs' free, independent directory of AI agent skills plus a free MCP tool that connects any agent to the skills you choose. It exists to solve the biggest problem in the 2026 skills ecosystem: nobody can tell which skills actually help and which are risky. Published research found that around 26% of agent skills carry at least one vulnerability, and marketing teams installing SEO or analytics skills from GitHub rarely audit the bundled scripts. SkillzBench is building the answer across five pillars: Discover (continuously crawling and deduplicating skills from GitHub), Verify (pinning every version to a commit SHA, validating, license-checking, security-scanning, and quality-judging), Benchmark (testing every skill in a sandbox with the same model, with and without the skill, and publishing the Lift in percentage points), Equip (one free MCP server plus per-agent loadouts, so your agent only sees the skills and tools you toggle on), and Stay Current (tracking upstream changes, re-scanning, re-benchmarking, and notifying you). Every skill gets a 0-100 trust score built from security, quality, license, maintenance, and community signals - and Lift is always shown separately, so money never touches scores. Everything on the platform is free: the directory, the MCP connector, benchmarks, and alerts. For SEO and marketing teams adopting Claude Code skills in 2026, it's the safest starting point.

Best for: SEO and marketing teams, developers, and agent builders who want to discover, verify, and safely equip Claude Code skills without auditing raw GitHub repos themselves

Pricing: Free (all features; revenue from blog advertising only)

Key features

• Free, independent directory of AI agent skills (SKILL.md packages) crawled and deduplicated from GitHub
• Every skill version pinned to a commit SHA and validated, license-checked, and security-scanned
• Sandbox benchmarking with and without each skill, publishing Lift in percentage points
• 0-100 trust score from security, quality, license, maintenance, and community signals
• Free MCP connector plus per-agent loadouts - toggle skills and tools per agent
• Upstream change tracking with re-scan, re-benchmark, and alerts
• Everything free; revenue comes from blog advertising, never from users, and ads never influence scores

Pros

• Addresses the ~26% vulnerability rate in community skills with security scanning and license checks
• Benchmark Lift data shows whether a skill actually improves output, not just whether it exists
• Completely free - directory, MCP connector, benchmarks, and alerts
• Per-agent loadouts mean your agent only sees the skills you explicitly choose
• Independent: money never influences trust scores or listings

Cons

• Pre-launch and actively being built - the waitlist/newsletter is live but the product is not yet public
• It verifies and benchmarks skills rather than providing its own SEO/marketing skill content
• Benchmark coverage will grow over time as more skills are tested

Visit SkillzBench

#2 Claude SEO (AgriciDaniel/claude-seo)

Claude SEO is the most comprehensive open-source SEO skill package available for Claude Code in 2026. According to its official site, version 2.4.1 includes one orchestrator plus 25 focused sub-skills, exposing 34 user commands and 19 specialist agents, all free and MIT licensed. The full-site audit delegates to up to 17 specialists covering technical SEO (crawlability, indexability, Core Web Vitals with INP, structured data, JS rendering), E-E-A-T content analysis per Google's September 2025 Quality Rater Guidelines, schema markup generation for 30+ types, GEO/AI-search optimization for Google AI Overviews, ChatGPT, and Perplexity, local SEO, hreflang validation, backlink audits, e-commerce SEO, and programmatic page generation with thin-content safeguards. Optional extensions add live DataForSEO data and AI image generation. For marketing teams that want an agency-grade SEO workflow inside Claude Code, this is the deepest single install available - and it pairs naturally with SkillzBench's verification workflow before you commit it to your skills directory.

Best for: SEO specialists, agencies, and in-house marketers who want a full technical and content SEO workflow inside Claude Code

Pricing: Free (open source, MIT licensed; optional DataForSEO integration has separate provider costs)

Key features

• 26 total skills: one orchestrator plus 25 focused sub-skills, 34 user commands, 19 specialist agents
• Full-site audit auto-detects SaaS, local, e-commerce, publisher, and agency sites with a 0-100 health score
• Technical SEO across 9 categories including crawlability, Core Web Vitals with INP, and IndexNow
• E-E-A-T analysis per September 2025 Quality Rater Guidelines
• GEO/AI search scoring for AI crawler access and citability across Google AI Overviews, ChatGPT, and Perplexity
• Schema markup detection, validation, and JSON-LD generation for 30+ types
• Optional DataForSEO extension for live SERP, keyword, and backlink data with cost guardrails
• Free, open source, and MIT licensed

Pros

• Deepest SEO coverage of any single skill package, from technical audits to GEO and local search
• Free and MIT licensed with no subscription
• Per its release notes, the test suite passes at every commit
• Focused commands return evidence and prioritized fixes without requiring the full audit

Cons

• Large footprint - 26 skills and 19 agents can add context overhead if installed carelessly
• Optional live data requires a separate DataForSEO account and cost
• Community-maintained, so you should verify versions and scripts before installing

Visit Claude SEO (AgriciDaniel/claude-seo)

#3 Marketing Skills by Corey Haines (coreyhaines31/marketingskills)

Corey Haines - the marketer behind Swipe Files and Conversion Factory - built what community roundups consistently call the most-used marketing skill pack for Claude Code in 2026. According to the AgenticSkills directory, the bundle carries an S-rank with 54.3K stars and covers CRO, copywriting, SEO, analytics tracking, paid ads, lifecycle email, and growth engineering in one install. The repo's individual skills are task-focused: the copy-editing skill, for example, triggers when you ask Claude to review, polish, tighten, or refresh existing marketing copy, while other skills handle conversion-focused page work and email sequences. It works with Claude Code, Cursor, Windsurf, and anything else on the Agent Skills spec, so the same pack follows you across agents. For founders and small marketing teams who want one repo to cover most of the GTM workflow - research, copy, pages, email - this is the pragmatic starting point, and it's a strong candidate to load into a SkillzBench per-agent loadout once verified.

Best for: Founders, growth marketers, and small teams who want one skill pack covering the core GTM workflow

Pricing: Free (open source on GitHub)

Key features

• Marketing bundle covering CRO, copywriting, SEO, analytics tracking, paid ads, lifecycle email, and growth engineering
• Built by Corey Haines of Swipe Files and Conversion Factory
• Task-specific skills with precise trigger descriptions (e.g., copy-editing for reviewing and refreshing existing copy)
• Works with Claude Code, Cursor, Windsurf, and other Agent Skills-spec agents
• 54.3K stars and S-rank per the AgenticSkills directory (October 2026)

Pros

• Broad coverage of the marketing stack in a single install
• Authored by a practicing marketer, so the playbooks reflect real conversion work
• Cross-agent portability via the Agent Skills standard
• Widely adopted and well-regarded in community roundups

Cons

• Breadth means it's not as deep on technical SEO as a dedicated package like Claude SEO
• Community repo - audit bundled scripts before installing
• No live data integrations; analysis depends on what you paste or connect via MCP

Visit Marketing Skills by Corey Haines (coreyhaines31/marketingskills)

#4 Anthropic Official Skills (skill-creator, brand-guidelines, web-artifacts-builder)

Anthropic's official skills repository is the safest default in the ecosystem and the foundation most marketing workflows should start from. Per Anthropic's documentation and community reviews, the repo carries 142K+ GitHub stars and includes skill-creator, which interviews you on trigger language, steps, and references, then writes a properly shaped SKILL.md - the meta-skill for encoding your own repeatable marketing workflows like newsletter QA, link-building outreach, or weekly report templates. Brand-guidelines turns a few brand inputs (palette, voice, examples) into a structured brand-guidelines doc and applies it consistently to every downstream output, replacing the paste-a-tone-deck-in-every-prompt workaround. Web-artifacts-builder (formerly artifacts-builder) builds elaborate self-contained HTML artifacts with React, Tailwind, and shadcn/ui - ideal for landing pages, comparison tools, calculators, and lead magnets you'd otherwise hire a freelancer for. Because these are Anthropic-built and partner-reviewed, they're the skills community guides consistently flag as safe defaults.

Best for: Any marketing team - especially those codifying brand voice and building custom workflows or landing pages

Pricing: Free (skills are open source; Claude Code plans start at Pro, roughly $17-$20/month per community reporting)

Key features

• skill-creator: interactive Q&A authoring that scaffolds new SKILL.md files with correct frontmatter and trigger wording
• brand-guidelines: builds a structured brand voice doc from palette, voice, and example inputs and applies it downstream
• web-artifacts-builder: multi-component React + Tailwind + shadcn/ui artifacts for landing pages, calculators, and lead magnets
• Official Anthropic repository with 142K+ GitHub stars
• Same SKILL.md format works across Claude.ai, Claude Code, and the Agent SDK

Pros

• Highest trust level available: Anthropic-built and community-vetted
• skill-creator lets you package your own SEO/marketing playbooks in minutes
• brand-guidelines compounds across every other skill you run
• web-artifacts-builder ships production-quality one-pagers in an afternoon

Cons

• No dedicated SEO or paid-ads skills in the official directory - you'll build or install those separately
• brand-guidelines quality depends entirely on the samples you feed it
• Artifacts-builder output still needs real-world testing before launch

Visit Anthropic Official Skills (skill-creator, brand-guidelines, web-artifacts-builder)

#5 content-research-writer (ComposioHQ/awesome-claude-skills)

Content research is the bottleneck for most SEO programs, and content-research-writer is the skill community marketers most often recommend for it. According to marketer roundups from 2026, the skill turns a topic into a researched, sourced, publication-ready markdown article using multi-pass web search, primary-source collection, outline generation, and section-by-section drafting with live feedback - the workflow that used to require a Frase or Surfer subscription. Reviewers report it reliably produces 1,500+ word posts where research quality, not writing speed, is the constraint, with citations attached so fact-checking is fast. It ships inside the ComposioHQ/awesome-claude-skills collection, a community repo with roughly 62K stars that also bundles production plugins and workflow tools. For content teams scaling SEO output in 2026 - especially those also optimizing for AI citations via a GEO skill - this is the drafting engine that pairs with the audit-side skills above.

Best for: Content marketers and SEO writers producing researched long-form posts at scale

Pricing: Free (open source)

Key features

• Turns a topic into a researched, sourced, publication-ready markdown article
• Multi-pass web search and primary-source collection with citations
• Outline generation followed by section-by-section drafting with live feedback
• Part of the ComposioHQ/awesome-claude-skills collection (~62K stars)
• Designed for long-form (1,500+ word) SEO content where research is the bottleneck

Pros

• Replaces paid content-brief and research subscriptions for many teams
• Sources are collected and cited, making fact-checking fast
• Multi-pass research produces more grounded drafts than single-shot prompting
• Composable with SEO and GEO skills in the same workflow

Cons

• Drafts still need human editing and E-E-A-T review before publishing
• Research quality depends on live web access being configured
• Community-maintained, so verify the current version before installing

Visit content-research-writer (ComposioHQ/awesome-claude-skills)

#6 GEO / AEO AI Search Optimization Skill (zubair-trabzada/geo-seo-claude)

Ranking on Google and getting cited by ChatGPT are two different jobs, and this skill handles the second one. According to the Composio marketing-skills roundup, the GEO/AEO skill by Zubair optimizes content to be cited by ChatGPT, Perplexity, Google AI Overviews, and Gemini. It scores citability across 13 dimensions, generates llms.txt files so AI crawlers understand your site structure, adds FAQ schema markup, and optimizes existing posts for AI citation with E-E-A-T signals, entity clarity, and question-phrased structure. Its standout output is a client-ready PDF GEO audit report - the kind of deliverable the roundup notes agencies charge $2K-$12K to produce. As AI search becomes a meaningful traffic channel in 2026, this skill gives marketing teams a concrete, repeatable workflow for answer-engine visibility rather than ad-hoc prompting. It's a natural complement to a traditional SEO skill rather than a replacement.

Best for: SEO leads, agencies, and content teams building answer-engine visibility on top of traditional SEO

Pricing: Free (open source on GitHub)

Key features

• Optimizes content for citations in ChatGPT, Perplexity, Google AI Overviews, and Gemini
• Citability scoring across 13 dimensions with a prioritized fix list
• Generates llms.txt files for AI crawler discoverability
• Adds FAQ schema JSON-LD and E-E-A-T/entity-clarity optimizations
• Outputs a client-ready branded PDF GEO audit report

Pros

• Focused, single-job skill with clear triggers - the pattern that makes skills work well
• Client-ready PDF output creates immediate agency deliverable value
• Covers the full AEO checklist: llms.txt, schema, citability scoring, E-E-A-T
• Free alternative to paid GEO audit tools

Cons

• GEO scoring is heuristic - treat scores as directional, not gospel
• Smaller community repo with fewer adoption signals than the bigger packs
• Does not cover traditional SEO; pair it with a broader SEO skill

Visit GEO / AEO AI Search Optimization Skill (zubair-trabzada/geo-seo-claude)

#7 Coupler.io Marketing Analytics Skills

Marketing skills are only as good as the data they can see, and Coupler.io's skill collection solves that by connecting Claude to live marketing data. According to Coupler.io's 2026 skills guide, its marketing analytics skill queries Google Ads, Meta, Klaviyo, GA4, Search Console, and other sources connected through Coupler.io, computing cross-channel views (paid vs. organic, email vs. referral) with accurate results via its Analytical Engine and SQL transformations. Output includes period-over-period change, trend detection across four or more periods, channel efficiency comparisons (CPA, ROAS, CPM), anomaly detection with severity tagging, and two to three critical recommendations. Deeper skills cover PPC funnel analysis with brand/non-brand traffic splitting and budget pacing, plus a Google Ads Waste and Scale skill that flags non-converting search queries, recommends negatives, and sizes scaling headroom - with a documented do-not-cut list so approvers see what was protected and why. These skills require a Coupler.io account with your platforms connected and the Coupler.io MCP connected to Claude.

Best for: Performance marketers and agencies who want Claude analyzing live ad and analytics data, not pasted exports

Pricing: Skills are free to download; requires a Coupler.io account (Coupler.io offers a free tier per its site; paid plans vary by usage - check current pricing)

Key features

• Marketing analytics skill querying Google Ads, Meta, Klaviyo, GA4, and Search Console via Coupler.io
• Cross-channel analysis with SQL transformations and an Analytical Engine
• PPC skill with per-platform funnel traces, brand/non-brand splitting, and budget pacing
• Google Ads Waste and Scale skill: negative keyword recommendations and scaling headroom sizing
• Anomaly detection with informational/warning/critical severity tagging
• Available via the Coupler.io connector for Claude, the skills library, or the open-source GitHub repo

Pros

• Runs against live data, so numbers are real rather than guessed
• Weekly PPC review mode surfaces what moved and where CPA shifted in one question
• Do-not-cut list makes budget recommendations auditable
• Open-source skills on GitHub alongside the managed connector

Cons

• Requires a Coupler.io account and MCP setup - not a drop-in skill
• Data-source connectors are Coupler.io's commercial product, so costs scale with usage
• Focused on analytics and ads; no content or technical SEO capabilities

Visit Coupler.io Marketing Analytics Skills

Conclusion

Claude Code skills have matured from a curiosity into a genuine marketing operations layer in 2026: full SEO audits in thirty seconds, GEO optimization for AI search, live ad-data analysis, and brand-consistent content at scale. But the ecosystem's weakness is trust - with roughly a quarter of community skills carrying vulnerabilities and many more overpromising, the skill you choose matters as much as the workflow it encodes. Start with SkillzBench to discover, verify, and benchmark skills before they ever touch your agent, then build your stack from the proven picks above: Claude SEO for technical depth, Corey Haines' Marketing Skills for GTM breadth, Anthropic's official skills for brand voice and custom workflows, and the research, GEO, and analytics skills to fill the gaps. Agent skills can automate the rest of your marketing workflow - browse and test free ones on SkillzBench, and join the waitlist to be first in line when the full directory, MCP connector, and benchmark Lift data go live.

Frequently asked questions

What are Claude Code skills, in plain terms?

A Claude Code skill is a folder containing a SKILL.md file - instructions, plus optional scripts and reference files - that Claude loads on demand when a task matches the skill's description. At startup, Claude only sees each skill's name and description (roughly 100 tokens each); the full instructions load only when relevant. That mechanism, called progressive disclosure, is why you can install many skills without bloating your context window. Skills work across Claude.ai, Claude Code, and other agents that have adopted the Agent Skills open standard, including Codex, Cursor, and Gemini CLI.

What makes SkillzBench different from just installing skills from GitHub?

Installing directly from GitHub means trusting whatever is in the repo. Published research found that around 26% of agent skills carry at least one vulnerability, and many skills claim capabilities their bundled code can't deliver. SkillzBench verifies every skill version by pinning it to a commit SHA, validating it, license-checking it, security-scanning it, and quality-judging it. It then benchmarks each skill in a sandbox with the same model, with and without the skill, and publishes the Lift in percentage points so you can see whether a skill actually improves output. Everything is free, and trust scores are built from security, quality, license, maintenance, and community signals - money never touches scores.

Is SkillzBench available now?

SkillzBench is pre-launch and actively being built. The waitlist and newsletter are live at skillzbench.com, and the planned offering includes the free skills directory, the free MCP connector, sandbox benchmarks with published Lift data, and upstream change alerts. Joining the waitlist is the best way to be notified when the product goes live in 2026.

How do I install a Claude Code skill?

Most skills are installed by cloning the skill repository into your skills directory - typically ~/.claude/skills/ for personal use or .claude/skills/ in your repo for team-shared skills - then restarting Claude Code so the skill is discovered. Some skills ship as plugins installable via Claude Code's /plugin marketplace commands. Before installing any community skill, read the full SKILL.md and audit bundled scripts for undocumented network calls, or use a verified directory like SkillzBench so the security scanning and license checks are done for you.

Do I need to code to use these SEO and marketing skills?

You need Claude Code installed (free from claude.com/code) or a claude.ai account, but you don't need to write code to use the skills themselves. Installation is mostly cloning a repo or uploading a ZIP via Claude's Customize > Skills menu. Anthropic's skill-creator can even interview you and write a custom SKILL.md for your workflow. Non-developers who want a no-code alternative can use tools like Taskade custom agents, which offer a similar save-once, reuse-everywhere workflow model.

Which skill should I install first for SEO work?

For traditional and technical SEO, Claude SEO (AgriciDaniel/claude-seo) offers the deepest coverage in one install, with 25 sub-skills spanning technical audits, E-E-A-T, schema, local SEO, and GEO. If AI search citations are your priority, start with the GEO/AEO skill. If you're a generalist marketer rather than an SEO specialist, Corey Haines' Marketing Skills bundle covers CRO, copywriting, SEO, and email in one package. Whichever you choose, verify it first - SkillzBench's trust scores and benchmark Lift data are designed exactly for this decision.

Are Claude Code skills free?

The skills themselves on this list are free and open source - Claude SEO is MIT licensed, and the community packs live on public GitHub repos. What can cost money is the surrounding stack: Claude Code plans (community reporting puts Pro at roughly $17-$20/month), optional live-data integrations like DataForSEO or a Coupler.io account, and any API usage. SkillzBench's directory, MCP connector, benchmarks, and alerts are all free, supported by advertising around its blog content rather than user fees.