Leash vs MarStack

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

Leash compared with MarStack
Detail	Leash	MarStack
What it does	Spend control for AI agents	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	Paid	Not given
Pricing	Starter $11/month for 1 user and up to 3 devices with spend caps, kill switch, loop detection, 30 days of history and email alerts. Pro $22/month for up to 5 members and 10 devices with everything in Starter plus Slack and Discord alerts, shared team budgets, 1 year of history and invoice reconcilia	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	Loop detection to catch runaway agents	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	Local by default with provider keys staying on your machine Cost reserved before requests reach the provider to prevent overages Works offline with local caps and kill switch continuing to function Supports multiple models and providers including Claude, OpenAI and Anthropic Team controls with scoped device access and shared budgets	Real-browser proof of tracking, not config checks alone
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	0	8
Referring domains (Majestic)	0	4

4 details filled in for both companies.

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