17 free, open-source Agent Skills (SKILL.md) that teach an AI agent a craft: SEO audits, scraper building, Apify, human-sounding writing, data analysis and more. Each ships for Claude Code and, where available, for Codex / ChatGPT.
Browse the hub on mr-bridge.com/skills | MIT licensed | By MrBridge
Clone any skill into your skills directory and it becomes available in your next session:
git clone https://github.com/MrBridgeHQ/audit-seo-claude ~/.claude/skills/audit-seoFor Codex / ChatGPT editions, follow the install notes in each repo's README.
| Skill | What it does | Claude Code | Codex / ChatGPT |
|---|---|---|---|
| SEO Audit | Full technical and on-page SEO audit of any web project (Astro, Next, Nuxt, WordPress): robots, sitemap, canonicals, hreflang, structured data, Core Web Vitals. | audit-seo-claude | audit-seo-chatgpt |
| Backlinks Expert | Off-page SEO doctrine: discover and qualify link opportunities, plan campaigns (anchors, velocity, tiers), and generate outreach assets, white-hat first. | backlinks-expert-claude | backlinks-expert-chatgpt |
| YouTube Traffic Grabber | Plan authentic YouTube marketing that drives referral traffic: video SEO, thumbnails, Shorts, CTAs and end-screens, earned engagement only. | youtube-traffic-grabber-claude | youtube-traffic-grabber-chatgpt |
| Skill | What it does | Claude Code | Codex / ChatGPT |
|---|---|---|---|
| Scraping Expert | Senior guidance to design, build and debug scrapers: anti-bot bypass, proxy strategy, fingerprinting, tool selection, and the internal-API-first reflex. | scraping-expert-claude | scraping-expert-chatgpt |
| Apify Scraper Builder | Build, modify and debug scraper Actors on Apify: Crawlee (Cheerio, Playwright, Camoufox) templates, request queues, pagination, defensive selectors. | apify-scraper-builder-claude | apify-scraper-builder-chatgpt |
| Apify MCP Server Builder | Build and deploy MCP servers on Apify: Standby mode, Streamable HTTP, transport selection, authentication and cold-start handling. | apify-mcp-server-builder-claude | apify-mcp-server-builder-chatgpt |
| Apify Expert | Authoritative, up-to-date facts about the Apify platform: Actors, runs, storage, proxy, Standby, the REST API, CLI and SDKs. | apify-expert-claude | apify-expert-chatgpt |
| Apify Actor Task | Plan, author and audit Apify Actor tasks as keyword-targeted use-case landing pages for the Console Publication tab. | apify-actor-task-claude | - |
| Scraper Audit Expert | Audit an existing scraper for coverage gaps, data-quality issues, resilience holes, cost waste and observability gaps, with prioritized fixes. | scraper-audit-expert-claude | - |
| Skill | What it does | Claude Code | Codex / ChatGPT |
|---|---|---|---|
| Human Writer | Write, clean or audit prose so it reads human-authored and survives AI detectors. Per-language editions below. | human-writer-en | human-writer-chatgpt |
| Short Study | Turn a question into a one-pager data study with computed figures, plus its promotion assets (anchors and social posts for X, Bluesky, LinkedIn). | short-study-claude | short-study-chatgpt |
Human Writer language editions (Claude Code): English · French · Spanish · Portuguese · German · Arabic · Hindi
| Skill | What it does | Claude Code | Codex / ChatGPT |
|---|---|---|---|
| GA4 Analyst | Retrieve and analyze Google Analytics 4 data via the Data API and the BigQuery export: funnels, cohorts, attribution and channel diagnostics. | ga4-analyst-claude | - |
| Hugging Face Profile Optimizer | Audit and optimize a Hugging Face profile and repos: scorecard, positioning, Model, Dataset and Space cards, metadata, honest and ethical. | hf-profile-optimizer | - |
| Kaggle Profile Optimizer | Audit, reposition and improve a Kaggle profile: a 0-5 scorecard over 12 dimensions, positioning, English bio assets and a 30/60/90-day plan. | kaggle-profile-optimizer | - |
| GitHub Profile Optimizer | Audit and optimize a GitHub profile, improve repository discoverability, and publish your own Agent Skills, never fabricating metrics. | github-profile-optimizer | - |
| Skill | What it does | Claude Code | Codex / ChatGPT |
|---|---|---|---|
| OSINT Researcher | Authorized open-source intelligence: recon and footprinting, threat intelligence, due diligence and KYC, with a legal, ethics and OPSEC gate. | osint-researcher-claude | - |
| Aromatic Herb Gardening Expert | Grow, maintain, harvest and troubleshoot 17 culinary herbs at home: personalized plans, organic pest control and seasonal calendars. | aromatic-herb-gardening-expert | - |
An Agent Skill is a SKILL.md file (plus reference docs) that loads into an AI coding agent and teaches it a repeatable craft: when to trigger, what doctrine to apply, which pitfalls to avoid. Skills are plain Markdown, versioned on GitHub, MIT licensed, and installable in seconds.
- Skills hub: mr-bridge.com/skills
- Website: mr-bridge.com
- Data tools on Apify: apify.com/mrbridge
- Open datasets: mr-bridge.com/datasets
Built by MrBridge, we bridge Data and Intelligence.