deactivate_persona · GalaxyMCP Server MCP: Risk & Policy

WHAT IT DOES

What deactivate_persona does on GalaxyMCP Server

AI agents use deactivate_persona to create or update resources in GalaxyMCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GalaxyMCP Server environment.

WHY IT NEEDS A POLICY

Why deactivate_persona needs a policy

This tool modifies the active persona state by deactivating it, which is a reversible change (it can be reactivated via activate_persona). This is a Write operation rather than Destructive since the persona data is not deleted, only its active status is changed.

From the tool's definition Tool name 'deactivate_persona' and description 'Deactivate the current persona' indicate a state-modifying operation that disables an active persona configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

deactivate_persona Rate-limited

deactivate_persona 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": {
    "deactivate_persona": {
      "limits": [
        {
          "counter": "deactivate_persona_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches GalaxyMCP Server, so you can run agents against it safely.

FAQ

Questions about deactivate_persona

What does the deactivate_persona tool do? +

Deactivate the current persona. It is categorised as a Write tool in the GalaxyMCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on deactivate_persona? +

Register the GalaxyMCP Server MCP server in PolicyLayer and add a rule for deactivate_persona: 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 GalaxyMCP Server. Nothing to install.

What risk level is deactivate_persona? +

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

Can I rate-limit deactivate_persona? +

Yes. Add a rate_limit block to the deactivate_persona 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 deactivate_persona completely? +

Set action: deny in the PolicyLayer policy for deactivate_persona. 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 deactivate_persona? +

deactivate_persona is provided by the GalaxyMCP Server MCP server (vaibhavkkk/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.