The 5 Best Agent Skills for SEO & Marketing in 2026

Agent skills have quietly become the most practical way for marketing and SEO teams to get consistent, expert-level output from AI tools in 2026. Instead of typing a fresh prompt every session, a skill is a reusable SKILL.md instruction package that teaches your agent — whether it's Claude Code, Codex, Cursor, or Gemini CLI — how to run a technical SEO audit, draft channel-correct copy, or build a campaign brief the same way every time. The ecosystem has exploded: community directories now index hundreds of thousands of published skills, with marketing among the fastest-growing categories. But growth has a dark side — published research found roughly 26% of skills carry at least one vulnerability, and separate audits have detected prompt injection in a significant share of tested skills. That means the real challenge in 2026 isn't finding skills; it's knowing which ones actually help, which are risky, and which measurably improve your agent's performance. This list covers five of the best options for SEO and marketing teams this year, starting with the platform we believe solves the trust problem best.

#1 SkillzBench — Editors' choice

SkillzBench, from AIQ Labs, is a free, independent directory of AI agent skills built specifically to solve the problem every marketing team now faces: there are thousands of skills out there, and nobody can tell which ones actually work and which ones are risky. Published research has found that roughly 26% of skills carry at least one vulnerability — a serious concern when a skill you install might touch your website, your ad accounts, or your customer data. SkillzBench's answer is a five-pillar system. It continuously discovers and deduplicates skills from GitHub, then verifies each one by pinning every version to a commit SHA, validating the package, checking licenses, running security scans, and judging quality. Most distinctively, SkillzBench benchmarks every skill in a sandbox — testing with the same model, with and without the skill — and publishes the resulting Lift in percentage points, so you can see exactly how much a skill improves your agent before you ever install it. Every skill also gets a 0-100 Trust Score built from security, quality, license, maintenance, and community signals. Critically, Lift is always shown separately from ratings, and money never touches scores. Once you've chosen skills, SkillzBench's free MCP tool connects any agent to exactly the skills you select, with per-agent loadouts so each agent only sees what you've toggled on for it. SkillzBench also tracks upstream changes, re-scans, re-benchmarks, and notifies you when a skill you depend on has changed. Everything — the directory, the MCP connector, benchmarks, and alerts — is free; the platform is funded by advertising on its blog articles, which never influences scores or listings. Note that SkillzBench is currently pre-launch and actively being built, with a waitlist live ahead of the public release.

Best for: Marketing teams, SEO professionals, developers, and agent builders who want verified, benchmarked skills instead of guessing which ones are safe and effective

Pricing: Free (ad-supported; advertising never influences scores or listings)

Key features

• Continuous discovery and deduplication of skills crawled from GitHub
• Verification: version pinning to commit SHA, validation, license checks, security scanning, and quality judging
• Sandboxed benchmarking with the same model, with and without each skill, publishing Lift in percentage points
• Trust Score (0-100) built from security, quality, license, maintenance, and community signals
• Free MCP server that connects any agent to the skills you choose, with per-agent loadouts
• Upstream change tracking with re-scanning, re-benchmarking, and notifications
• Completely free directory, benchmarks, MCP connector, and alerts

Pros

• Independent and free — no pay-to-play rankings, with Lift always shown separately from ratings
• Addresses the real security problem: ~26% of skills carry at least one vulnerability
• Evidence-based selection through sandboxed benchmarking and published Lift scores
• Per-agent loadouts mean your marketing agent only sees the skills and tools you choose
• Ongoing monitoring keeps skills current as upstream code changes

Cons

• Currently pre-launch — the full product is not yet publicly available, with a waitlist running ahead of release
• As a directory and verification layer, it complements rather than replaces the skills themselves

Visit SkillzBench

#2 claude-seo (AgriciDaniel)

For teams that want a deep, traditional-plus-AI SEO toolkit, claude-seo is one of the most complete skill packages available in 2026. According to the sources covering it, the suite includes 25 sub-skills and 18 sub-agents spanning everything from technical crawl health to e-commerce SEO and international hreflang validation. The core seo-audit skill crawls up to 500 pages, detects the business type, delegates to specialist sub-skills covering technical issues, content, schema, images, sitemaps, Core Web Vitals, GEO, backlinks, and performance, and generates a 0-100 health score. Reviewers report that a full audit takes about thirty seconds — replacing what used to be a multi-hour Screaming Frog, Lighthouse, and schema-check sweep. The package also scores content drafts for E-E-A-T signals, readability, depth, and AI citation readiness, and validates and generates Schema.org structured data in JSON-LD. For marketing teams focused on organic search, it's a strong, widely used option with significant community traction — the parent repository has over 7,000 GitHub stars.

Best for: SEO practitioners and marketing teams that need a comprehensive, repeatable technical and content audit workflow for Claude Code

Pricing: Free and open source

Key features

• seo-audit skill that crawls up to 500 pages and generates a 0-100 health score
• Specialist sub-skills for technical, content, schema, images, sitemap, Core Web Vitals, GEO, backlinks, and performance
• E-E-A-T content scoring for drafts, including AI citation readiness
• Schema.org JSON-LD detection, validation, and generation (Article, Product, FAQPage, Breadcrumb, ItemList)
• Per-URL page analysis with prioritized fixes
• GEO/AI-crawler accessibility scoring (GPTBot, ClaudeBot, PerplexityBot) and llms.txt compliance
• hreflang validation for multi-language sites

Pros

• Exceptionally broad SEO coverage in one package — technical, content, schema, and GEO
• Fast, structured audits that replace multiple paid tool sweeps
• Strong community adoption and active maintenance
• Covers both traditional SEO and AI-search visibility

Cons

• Requires Claude Code or a compatible agent — not a standalone tool
• A large suite can consume more context than a single focused skill
• As an open-source community project, it lacks formal security auditing or benchmarked performance claims

Visit claude-seo (AgriciDaniel)

#3 coreyhaines marketingskills

Corey Haines' marketingskills suite is one of the most popular copywriting-focused skill collections of 2026, with the parent repository earning more than 9,700 GitHub stars and the copywriting skill alone logging around 67,000 installs. According to coverage of the suite, the copywriting skill is a conversion framework for essentially every website copy type — homepage, landing pages, pricing, feature pages, about pages, and product descriptions. Its philosophy is clarity over cleverness, benefits over features, and customer language over company jargon. The workflow walks the agent from gathering page purpose and audience context, through drafting headlines and hero sections, structuring proof blocks with testimonials and case studies, writing CTAs with A/B variants, and applying a voice and persuasion framework. The suite extends beyond copywriting to include skills for email sequences, popup CRO, ad creative, and cold email, making it a genuinely useful bundle for marketing teams that produce a high volume of conversion-focused assets. It works with Claude Code and other agents that support the open SKILL.md standard.

Best for: Marketers, founders, and growth teams producing high volumes of landing page, email, and ad copy

Pricing: Free and open source

Key features

• Conversion copywriting framework for homepages, landing pages, pricing, feature pages, about pages, and product descriptions
• Structured workflow: audience context, headlines, hero sections, proof blocks, and CTA A/B variants
• Philosophy of clarity over cleverness and customer language over jargon
• Companion skills for email sequences, popup CRO, ad creative, and cold email
• Voice and persuasion framework applied to output
• Works with any agent supporting the open SKILL.md standard

Pros

• Very popular and battle-tested across tens of thousands of installs
• Practical, conversion-focused frameworks rather than generic writing advice
• Covers a full copy workflow from research to A/B-ready CTAs
• Free and portable across skills-compatible agents

Cons

• Focused on copywriting and CRO — not a technical SEO or analytics solution
• Output still needs human review for brand fit and factual accuracy
• No independent benchmarking of how much the skills actually improve agent performance

Visit coreyhaines marketingskills

#4 seranking-seo-skills (SE Ranking)

SE Ranking's official skill set brings an established SEO platform's data into your AI agent workflow. According to ranking sites covering it, seranking-seo-skills packages a full SEO platform as skills — content briefs, audits, backlink gap analysis, and AI-search share of voice — making it one of the few vendor-official options in the marketing skills space. This matters because most SEO skills can only reason over what your agent can access; a vendor-backed skill pairs the analysis playbook with the vendor's live data, closing the gap between "the agent knows SEO best practices" and "the agent knows your actual rankings." The skills cover keyword research and brief generation, site audits, backlink analysis, and tracking how your brand appears in AI-generated answers. It's verified and listed on multiple skill directories, and pairs naturally with other marketing skills for content production. For teams already on SE Ranking, this is a natural bridge between their subscription data and their AI agent workflows.

Best for: SEO teams and agencies already using SE Ranking that want their platform data inside AI agent workflows

Pricing: Contact for pricing (requires an SE Ranking subscription)

Key features

• SEO content briefs generated from platform data
• Site audit skills
• Backlink gap analysis
• AI-search share of voice tracking
• Vendor-official, verified skill package

Pros

• Backed by an established SEO platform with live data rather than training-cutoff guesses
• Vendor-official and verified, which reduces the security uncertainty of community skills
• Covers both traditional SEO and AI-search visibility
• Pairs well with other content and copywriting skills

Cons

• Requires an SE Ranking subscription to be useful
• Smaller scope than full open-source SEO suites
• Vendor lock-in — skills are tied to one platform's data

Visit seranking-seo-skills (SE Ranking)

#5 Dataslayer AI Marketing Skills

Dataslayer's marketing skills are the strongest pick for paid media and analytics-heavy teams. According to the company's own documentation, five of its ten skills connect directly to live campaign data through the Dataslayer MCP — Google Ads, Meta, GA4, Search Console, LinkedIn Ads, and 50+ platforms — so your agent fetches the numbers itself instead of asking you to export spreadsheets. The ds-paid-audit skill runs structured audits of Google Ads, Meta, and LinkedIn accounts, checking budget waste, audience overlap, CPA overruns, and creative fatigue, with findings ranked by severity. The ds-seo-weekly skill pulls Search Console data and classifies every tracked URL into quick wins, CTR problems, ranking drops, or conversion gaps, producing a prioritized weekly action list. There's also a content performance skill that separates posts driving both traffic and conversions from those doing neither, a branded client PDF report generator for agencies, and framework-based skills (landing page CRO, ad creative generation, email sequences, content strategy) that work without any data connection. The data-connected skills require the Advanced plan, which the company says includes a 15-day free trial.

Best for: Paid media managers, SaaS marketing teams, and agencies that want their agent working from live campaign data instead of exports

Pricing: Data-connected skills require the Dataslayer Advanced plan (15-day free trial included); framework-based skills are free to use with a compatible agent

Key features

• Live-data paid media audits across Google Ads, Meta, and LinkedIn (ds-paid-audit)
• Weekly Search Console opportunity classification: quick wins, CTR problems, ranking drops, conversion gaps (ds-seo-weekly)
• Content performance analysis combining traffic and conversion data from GA4
• Branded client PDF reports generated in a single command
• Churn risk scoring for SaaS accounts using product usage data
• Framework-based skills for landing page CRO, ad creative, email sequences, and content strategy that need no data connection

Pros

• Works from today's numbers, not last week's spreadsheet export
• Reproducible weekly analyses with the same command
• Strong agency features like branded PDF reporting
• Framework-based skills work even without a paid connection

Cons

• The most valuable skills are gated behind the paid Advanced plan
• Focused on analytics and paid media — not a content production suite
• Live-data access requires connecting campaign accounts to a third-party MCP

Visit Dataslayer AI Marketing Skills

Conclusion

Choosing the right agent skills for SEO and marketing in 2026 comes down to one question: do you know — really know — that a skill works and is safe before your agent loads it? Open-source suites like claude-seo and coreyhaines marketingskills bring genuine expertise and huge community traction. Vendor-official options like SE Ranking's skills and Dataslayer's live-data skills connect your agent to real campaign and ranking data. But none of them solve the underlying trust problem on their own — and with published research finding roughly 26% of skills carrying at least one vulnerability, installing unvetted skills into a marketing workflow that touches your website, ad accounts, and customer data is a real risk. That's why SkillzBench is our Editor's Choice: it's the layer that verifies, benchmarks, and monitors every skill, publishes the Lift each one actually delivers, and connects your agent to exactly — and only — what you've chosen, all for free. It's currently in pre-launch, so join the waitlist at skillzbench.com to be first in line when the directory, benchmarks, and free MCP connector go live. Skills, proven.

Frequently asked questions

What makes SkillzBench different from other agent skill directories?

Most directories only tell you a skill exists and how popular it is. SkillzBench is building something more rigorous: every skill gets version-pinned to a commit SHA, validated, license-checked, security-scanned, and quality-judged, then benchmarked in a sandbox with the same model, with and without the skill, so you can see the actual Lift in percentage points. It also assigns a 0-100 Trust Score from security, quality, license, maintenance, and community signals, and keeps monitoring skills for upstream changes after you adopt them. Money never touches scores, and everything on the platform is free.

Are agent skills safe to install?

Not automatically. Published research found roughly 26% of skills carry at least one vulnerability, and separate audits have detected prompt injection in a significant share of tested skills. Because skills are essentially markdown instruction packages, a malicious or careless one can steer your agent toward bad behavior. That's why verification layers like SkillzBench — which security-scans and quality-judges every skill before benchmarking it — matter, and why you should be cautious with unvetted skills from open directories.

Do these skills work with Claude, ChatGPT, Cursor, and Gemini CLI?

Most modern skills use the open SKILL.md format, which is supported across Claude Code, OpenAI Codex, Cursor, Gemini CLI, GitHub Copilot, and many other agents. A skill written once generally runs across compatible tools without modification. SkillzBench's free MCP connector is being built to connect any agent to the skills you choose, with per-agent loadouts, so you can manage one skill set across your whole toolchain.

Can agent skills replace tools like Ahrefs, Semrush, or SE Ranking?

Generally no — the best SEO skills consume data from those tools rather than replacing them. Skills provide the analysis and prioritization playbook; the platforms are the data source, often connected via MCP. Vendor-official skills like SE Ranking's seranking-seo-skills are an example of this pairing done well. The right setup in 2026 is usually skills plus your existing data subscriptions.

What is a skill 'Lift' score?

Lift is the measurable improvement a skill gives your agent, expressed in percentage points. SkillzBench's approach is to test every skill in a sandbox using the same model, running identical tasks with and without the skill, then publishing the difference. This separates marketing claims from evidence: a skill with a high Trust Score but low Lift might be safe but not worth the context cost, while a high-Lift skill is one that demonstrably makes your agent better at the task.

How much do agent skills for marketing cost?

Many of the best community skills are free and open source — claude-seo and coreyhaines marketingskills are both free on GitHub. Vendor-backed options typically require a subscription: SE Ranking's skills require an SE Ranking account, and Dataslayer's live-data skills require the Advanced plan (which includes a 15-day free trial). SkillzBench is entirely free — the directory, benchmarks, MCP connector, and alerts — funded by advertising that never influences scores.

Where should a marketing team start with agent skills?

Start with the workflow that eats the most time every week — usually SEO audits, content production, or paid media reporting. Install one skill, use it consistently for two weeks, then add the next. Before installing anything, verify it: check the source repository's activity, look for security concerns, and once SkillzBench launches, use its Trust Score and published Lift to pick skills that are both safe and proven to improve results.