AI Agent Skills vs MarStack

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

AI Agent Skills compared with MarStack
Detail	AI Agent Skills	MarStack
What it does	Free ready-made AI agent workflows for recruiting, marketing, sales, finance, bookkeeping, real estate and founder work	Analytics expert and auditor inside Claude that checks GA4, Google Tag Manager, consent, Meta and Google Ads with 167 expert rules and answers business questions across your marketing data.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Not given
Pricing	All 28 agent packs are completely free to download with no checkout, account or subscription required. Each pack includes three files (skill.md, setup-prompt.txt, usage-prompt.txt) that you keep forever.	Free: 100 credits (no card required). Starter: $19/month for 1,000 credits. Pro: $49/month for 5,000 credits. Agency: $149/month for 30,000 credits. Individual tool calls cost 1-10 credits depending on complexity.
Key features	28 ready-made agent packs covering recruiting, marketing, sales, finance, bookkeeping, real estate and founder roles Three plain-text files per agent: skill.md (workflow rules and test cases), setup-prompt.txt (guided setup), and usage-prompt.txt (day-to-day request) Works with any AI assistant that reads plain text files including ChatGPT, Claude, Gemini, Instinct, Copilot, and 8+ others Integrates with Google Sheets, Docs and Forms plus Microsoft and Zoho alternatives Tests workflow on fictional sample data before running on real work Stops at every human decision gate before sending, spending, publishing or scheduling No signup, account or subscription required Set up and forget functionality for recurring workflows	GA4 property audits with 89 expert checks Real-browser page tracking inspection and validation Live conversion testing with form submission Business intelligence across GA4, Meta, Search Console and CRM Branded report generation in Excel, Word, PDF and PowerPoint Integration with Claude, Cursor and VS Code via MCP
What makes it different	Free with no subscription: all 28 agent packs are completely free to download and use forever with no signup or recurring charges Works inside your existing AI assistant: files integrate with any compatible AI you already use rather than requiring migration to a new platform Built and maintained by AI agents: workflows are researched, written, tested and kept updated by AI agents with human review Human approval at every decision point: agents stop before any action that sends, spends, publishes or schedules without explicit human approval	Real-browser proof of tracking, not config checks alone
Community votes	0	0
DR (Domain Rating by Ahrefs)	5 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	9	0
Citation Flow (Majestic)	19	8
Referring domains (Majestic)	8	4

4 details filled in for both companies.

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