PLCs ai

PLCs.ai MCP Server

Connect Claude, Cursor, Codex, or any MCP-compatible agent to your PLC projects.

PLCs.ai is the AI platform purpose-built for PLC engineers: upload an Allen-Bradley (Studio 5000) or Siemens (TIA Portal) project and understand, troubleshoot, document, and safely generate code for it in plain English. This MCP server gives any AI agent governed access to that same capability — your projects, live tag values, and analyses — with per-tool permission scopes.

Remote server: https://mcp.plcs.ai/mcp (Streamable HTTP · OAuth or API key) Full documentation: https://www.plcs.ai/developer/mcp

Quick start

Claude Code

claude mcp add --transport http plcs-ai https://mcp.plcs.ai/mcp

Then run /mcp and choose Authenticate to sign in with your PLCs.ai account. (Or pass an API key: --header "Authorization: Bearer plck_live_…".)

Claude Desktop

Settings → Connectors → Add custom connector → URL https://mcp.plcs.ai/mcp → Connect and sign in. For API-key or on-prem setups, use the mcp-remote bridge:

{
  "mcpServers": {
    "plcs-ai": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.plcs.ai/mcp",
               "--header", "Authorization: Bearer plck_live_…"]
    }
  }
}

Cursor / Codex / other MCP clients

See per-client guides: https://www.plcs.ai/developer/mcp — covers Cursor, Codex, and any client that speaks remote MCP or can run mcp-remote.

What the agent can do

19 tools, permission-scoped per API key or OAuth grant:

Area	Tools
Discover	plcs_health, plcs_list_projects, plcs_get_project, plcs_get_project_source
Understand	plcs_interpret, plcs_search_context
Live plant data	plcs_get_live_values, plcs_get_tag_history
Analyze	plcs_start_analysis, plcs_get_analysis (dead code, race conditions, missing handshakes, interlock audits, cycle-time bottlenecks, signal tracing)
Generate	plcs_generate_code — returns a reviewable proposal; nothing is saved without review
Version & export	plcs_save_version, plcs_ingest_project, plcs_stage_upload, plcs_export_plc, plcs_export_pdf, plcs_get_export, plcs_download_export
Embed	plcs_mint_embed_token — short-lived, read-only, project-scoped iframe tokens

Example prompts

• "List my PLC projects and check which ones have live data connected."
• "Why won't Conveyor 3 restart after a stop? Trace the interlocks."
• "Run a dead-code analysis on the Palletizer project and summarize what's safe to remove."
• "What did tag Motor1_Enable do in the last hour?"
• "Draft a fix for the missing handshake between Conv001 and Rob010 — proposal only."

Safety model

• Every tool call is authenticated and scoped to your organization; the credential is the tenant.
• Code generation returns proposals; persisting a new version is a separate, separately-scoped action.
• Customer data is never used to train AI models. Data handling →

Requirements

• A PLCs.ai account (start a free trial) or API key
• For the mcp-remote bridge: Node 18+

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