NitroStack vs ActionBox

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

NitroStack compared with ActionBox
Detail	NitroStack	ActionBox
What it does	Full-stack Model Context Protocol platform for building, testing, and deploying MCP servers and agentic AI applications	Human approval infrastructure for AI agents and automation workflows
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Freemium
Pricing	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.	Developer: Free forever with 250 Actions/month, 3 Sources, 3 Watches, 7-day history. Pro: $10/month ($120/year, save 17%) with 1,000 Actions/month, unlimited Sources, 20 Watches, 30-day history, additional Actions at $8 per 1,000-pack. Team: $49.17/month ($590/year, save 17%) with 5,000 Actions/mont
Key features	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	Typed decisions (Boolean, choice, text, number, rating, structured forms) Heartbeat Watches for silent-work detection Action Controls for safe follow-up operations Multi-surface inboxes (web, mobile, Slack, CLI, MCP) Model Context Protocol (MCP) integration Signed receipts and durable decision history Mobile app for iOS (15+) with push alerts Slack approval integration (Beta) CLI with bounded long-poll waiting Integration guides for GitHub Actions, n8n, LangGraph, OpenAI Agents SDK
What makes it different	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	Durable decision records that survive client disconnections and restarts Reduces median approval time significantly in production environments Unified API across multiple approval surfaces without building custom dashboards Source-scoped identity for independent credential rotation across runners Built-in monitoring for stalled background work with heartbeat watches
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)	15 −1 (down) since last check	5 no change since last check
Trust Flow (Majestic)	7	7
Citation Flow (Majestic)	28	24
Referring domains (Majestic)	125	42

5 details filled in for both companies.

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