Marketing Skills

Marketing Skills is an open-source collection of AI agent skills built by Corey Haines for technical marketers and founders. It installs 40+ markdown-based skill files into AI coding agents, giving them specialized marketing knowledge and workflows. The project is available under the MIT License on GitHub and is installed via a single npx command.

What It Is

Marketing Skills is a skill library for AI coding agents — not a standalone app, but a set of structured markdown files that extend agents like Claude Code, OpenAI Codex, Cursor, and Windsurf with marketing-specific frameworks and best practices. Each skill file tells the agent when to activate (e.g., "when the user wants to optimize a landing page") and what methodology to apply. The library covers conversion rate optimization, copywriting, SEO, paid advertising, email marketing, analytics, growth engineering, sales enablement, and more.

How Skills Work Together

The library is architected around a central product-marketing skill that every other skill reads first to understand the product's audience and positioning. From there, skills are organized into seven functional clusters:

• SEO & Content: seo-audit, ai-seo, programmatic-seo, site-architecture, schema, content-strategy, aso
• CRO: cro, signup, onboarding, popups, paywalls
• Content & Copy: copywriting, copy-editing, cold-email, emails, social, video, image, sms
• Paid & Measurement: ads, ad-creative, ab-testing, analytics
• Growth & Retention: referrals, free-tools, churn-prevention, community-marketing, co-marketing, lead-magnets
• Sales & GTM: revops, sales-enablement, launch, pricing, competitors, competitor-profiling, directory-submissions, prospecting
• Strategy: marketing-ideas, marketing-psychology, customer-research, marketing-plan

Skills cross-reference each other — for example, copywriting ↔ cro ↔ ab-testing, and customer-research feeds into copywriting, cro, and competitors.

Installation Options

The recommended path is a single CLI command: npx skills add coreyhaines31/marketingskills, which installs all skills to .agents/skills/ and symlinks into .claude/skills/ for Claude Code compatibility. Additional options include a Claude Code plugin system command, cloning and copying the repo, adding it as a Git submodule, forking and customizing, or using SkillKit for multi-agent deployments across Claude Code, Cursor, and Copilot simultaneously.

Agent Compatibility

The skills follow the Agent Skills spec (agentskills.io) and are confirmed to work with Claude Code, OpenAI Codex, Cursor, and Windsurf. Skills can be invoked automatically when the agent detects a relevant task, or called directly with slash commands like /cro, /emails, or /seo-audit.

Update: v2.3.0

The latest release, v2.3.0 (published May 29, 2026), adds a marketing-plan skill that generates an AARRR-structured fractional CMO plan. This follows the v2.0 major release, which renamed 17 skills, consolidated page-cro and form-cro into a single cro skill, and moved the product marketing context file from .claude/ to .agents/. The GitHub repository reports over 31,000 stars and more than 5,100 forks, per the project's own GitHub metadata.