Lists messages. GET /alarmLogging/Messages with optional paging (itemLimit, continuationPoint). Use Accept-Language for response language and Content-Language for identifier resolution.
AI agents call wincc-get-alarm-messages to retrieve information from WinCC V8 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves alarm message data from a SCADA system without modifying, deleting, or executing operations. It is purely a data retrieval function with optional filtering/pagination. No side effects or destructive actions are possible. The blast radius of misuse is limited to information disclosure of existing alarm logs, which represents a low severity risk in an industrial control context.
From the tool's definition Tool name 'wincc-get-alarm-messages' with description 'Lists messages' via GET endpoint. GET /alarmLogging/Messages with optional paging parameters (itemLimit, continuationPoint) indicates a read-only query operation with no data modification, deletion, or…
Documented attack patterns abuse exactly the kind of access wincc-get-alarm-messages gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and WinCC V8 MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for wincc-get-alarm-messages:
{
"version": "1",
"default": "deny",
"tools": {
"wincc-get-alarm-messages": {}
}
} wincc-get-alarm-messages is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Lists messages. GET /alarmLogging/Messages with optional paging (itemLimit, continuationPoint). Use Accept-Language for response language and Content-Language for identifier resolution. It is categorised as a Read tool in the WinCC V8 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the WinCC V8 MCP Server MCP server in PolicyLayer and add a rule for wincc-get-alarm-messages: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches WinCC V8 MCP Server. Nothing to install.
wincc-get-alarm-messages is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the wincc-get-alarm-messages rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for wincc-get-alarm-messages. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
wincc-get-alarm-messages is provided by the WinCC V8 MCP Server MCP server (vogler75/winccv8-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from WinCC V8 MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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38 WinCC V8 MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.