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PLCGateway AI MCP vs Guardian

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

PLCGateway AI MCP compared with Guardian
DetailPLCGateway AI MCP logo PLCGateway AI MCPGuardian logo Guardian
What it doesMCP server for industrial software that lets AI assistants connect machines, build screens and analyze production data Human authority infrastructure for autonomous AI
StageNot given Not given
FoundedNot given Not given
Based inTR Not given
Pricing modelNot given Freemium
PricingNot given Free: $0 per month with 2 connections, 1 agent, 500 protected actions per month. Developer: $99/month with 25,000 billable executions included, then $0.001 per billable execution with $500 default overage cap. Business: Contact Sales for paid pilots and enterprise contracts.
Key features
  • Connect machines and create devices from plain language instructions
  • Build process screens and report dashboards that engineers review before deployment
  • Define production assets and calculate OEE for discrete, continuous or batch processes
  • Query alarm statistics and production data in natural language
  • Support MCP protocol over network HTTP or local stdio connections
  • Works with any MCP-compatible AI client including desktop and self-hosted models
  • Role-based access control matching viewer, operator and administrator permissions
  • Audit logging of every write operation with user identification
  • Acknowledge alarms and record batch results within user permissions
  • Generate Python code examples for REST API integration
  • Cryptographically signed receipts and verifiable evidence
  • Multi-party approval for organizational authority
  • Open-source SDK, MCP server, and framework adapters
  • Authority lifecycle management from grant to revocation
  • Supported integrations with payments and cloud accounts
  • Individual, family, business, and enterprise deployment options
  • Enforcement at tool execution boundaries
What makes it different
  • Built-in MCP server in every product, no separate AI add-on or cloud service needed
  • Production data remains on-premise; nothing sent to cloud unless user's chosen AI model requires it
  • Drafts protect production: AI-created screens and dashboards reviewed before going live
  • Same access controls for AI as for people: roles, rights and logging
  • Assists in user's own language and explains PLCGateway features through built-in help
  • Write-once signed decisions verifiable by auditors without trusting the vendor
  • Controls sit at the point where AI systems take consequential actions
  • One company integrating security and compliance disciplines
  • Open-source cores and published research allow vendor review
  • Human authority never transferred to the agent
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check3 no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)026
Referring domains (Majestic)018

3 details filled in for both companies.

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