apply_safe_state

Emergency action: write the scientist-configured safe-state PVs (--option safe_state, e.g.

SERVERPypi:labmcp Alicat SOURCEpypi:labmcp-alicat

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/lab-instrument-mcps/apply-safe-state.md

WHAT IT DOES

What apply_safe_state does on Pypi:labmcp Alicat

AI agents use apply_safe_state to create or update resources in Pypi:labmcp Alicat, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Pypi:labmcp Alicat environment.

RISK

Why apply_safe_state is rated Medium

Writes predefined safe-state values to instrument PVs; reversible but high-impact emergency action.

From the tool's definition Emergency action: write the scientist-configured safe-state PVs

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs apply_safe_state safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Pypi:labmcp Alicat, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For apply_safe_state, this is the rule to start with:

apply_safe_state Rate-limited

apply_safe_state stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "apply_safe_state": {
      "limits": [
        {
          "counter": "apply_safe_state_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Pypi:labmcp Alicat, apply this rule, and every apply_safe_state call is checked against it from then on.

FAQ

Questions about apply_safe_state

What does the apply_safe_state tool do? +

Emergency action: write the scientist-configured safe-state PVs (--option safe_state, e.g. It is categorised as a Write tool in the Pypi:labmcp Alicat MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on apply_safe_state? +

Register the Pypi:labmcp Alicat MCP server in PolicyLayer and add a rule for apply_safe_state: 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 Pypi:labmcp Alicat. Nothing to install.

What risk level is apply_safe_state? +

apply_safe_state is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit apply_safe_state? +

Yes. Add a rate_limit block to the apply_safe_state 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.

How do I block apply_safe_state completely? +

Set action: deny in the PolicyLayer policy for apply_safe_state. 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.

What MCP server provides apply_safe_state? +

apply_safe_state is provided by the Pypi:labmcp Alicat MCP server (pypi:labmcp-alicat). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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