35 Free Marketing Skills for Claude Code & OpenCode Agents
Install 35 open-source marketing skills via one NPX command into Claude Code, OpenCode, or Cursor to automate SEO audits, CRO, copywriting, and content strategy—giving solo founders instant expert frameworks without hiring.
One-Command Setup Turns AI Agents into Marketing Playbooks
Run npx skills@latest add coreyhaines31/marketingskills to clone the 35-skill repo (20k+ GitHub stars, MIT license), select skills via spacebar checklist (e.g., AB testing, cold email, pricing strategy), choose your agent (Claude Code, OpenCode, Cursor), and pick project-level or global install. Project-level keeps skills in .agents/skills or .claude/skills for that folder; global makes them available everywhere. OpenCode auto-discovers and loads skills on-demand via native tools, while Claude Code exposes them as /slash commands like /page-cro. Agents detect relevant skills from prompts, e.g., "optimize landing page" triggers page CRO automatically.
Skills are structured skill.md files with expert frameworks, questions, workflows, and output formats—eliminating scratch prompts. Cross-compatibility ensures skills work across agents, and they reference each other for compounding value (e.g., copywriting pulls from CRO audit).
Foundational Context Unlocks Tailored Outputs Across 35 Skills
Always start with /product-marketing-context: scans codebase, README, landing page to generate a Markdown context file covering product description, ideal customer profile (ICP), positioning statement, key differentiators, competitive landscape, and messaging framework. It asks clarifying questions if needed. Every other skill reads this file first, ensuring relevance—e.g., SEO audit targets niche keywords, copywriting matches your ICP and value prop.
This chaining boosts accuracy: more skills used, better outputs. Install all 35 for full synergy (copywriting → page CRO; RevOps → sales enablement + cold email; SEO audit → schema + AI SEO).
Actionable Frameworks Deliver Production-Ready Marketing Assets
Page CRO: Audits landing pages section-by-section (headlines, CTAs, social proof, pricing, forms, above-fold flow), suggesting fixes like "move CTA above fold" or "add positioned testimonials" with before/after examples.
Copywriting: Rewrites sections (hero, features, CTAs) using context + CRO audit, outputting 5+ variations per section following direct response rules—short sentences, benefit-focused, outcome-specific.
Content Strategy: Builds pillars (problem space, solution, trends, case studies), topic clusters, 30+ post ideas with search intent/keywords, and prioritization by impact for SaaS launches.
AI SEO: Optimizes for LLM search (ChatGPT, Perplexity) via structure that boosts citations—early edge as small sites struggle traditional SEO.
Cold Email: Generates B2B sequences from ICP/value prop: personalized hooks, follow-ups, subject variants—short, reply-focused.
Review outputs as first drafts; adjust for brand. Contribute via PRs following contributing.md. For indie hackers, this executes marketing 10x faster than manual, bridging code-to-customer gap without agencies.