HOL Guard vs NitroStack

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

HOL Guard compared with NitroStack
Detail	HOL Guard	NitroStack
What it does	Runtime security layer that stops risky AI actions before they execute	Full-stack Model Context Protocol platform for building, testing, and deploying MCP servers and agentic AI applications
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Freemium	Freemium
Pricing	Free plan: Local Guard runtime with real-time approval prompts and local audit log. Solo $4.99/mo: adds 2 cloud-connected devices and 30-day cloud retention. Pro $15/mo: adds 5 cloud-connected devices, 180-day retention, and policy versioning. Team $30/seat/mo: up to 25 cloud-connected devices, 365-	Hobby: free forever with 30k requests/mo; Pro: $30/org/mo with 300k requests/mo included and $0.10 per 1k extra requests beyond 300k; Enterprise: custom pricing starting at $250/mo with dedicated infrastructure and custom SLAs.
Key features	Surface-specific pre-action interception Policy routing with allow, observe, ask, and block outcomes Local review and evidence workflows MCP, skill, plugin, and package inspection Layered local and team policy Open source runtime under Apache-2.0 Offline local protection without cloud connectivity Continuous GitHub leaked-secret monitoring Decision audit trail and export Support for multiple AI coding agents	Open-source TypeScript SDK with declarative decorators and Zod validation NitroStudio desktop IDE for visual tool testing and AI reasoning visualization NitroCloud serverless hosting with auto-scaling and custom domains GitHub integration for one-click deployment Enterprise authentication modules White-label NitroChat AI interface 99.99% uptime SLA on NitroCloud API to MCP conversion tools
What makes it different	Open-source core runtime runs locally without cloud requirement Protects against secrets, destructive commands, prompt injection, and supply chain attacks No source code or secrets uploaded; decisions stored as redacted summaries	Designed for teams building custom MCP tools from their own APIs, not a catalog of prebuilt connectors Complete full-stack platform combining SDK, IDE, and cloud hosting in one suite Open-source core with npm-installable packages for SDK, CLI, and UI widgets 80,000 deployments and 13 million requests already in production Enterprise-grade security with AES-256 encryption and JWT authentication
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	53 +1 (up) since last check	15 −1 (down) since last check
Trust Flow (Majestic)	27	7
Citation Flow (Majestic)	44	28
Referring domains (Majestic)	735	125

5 details filled in for both companies.

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