set_server · CIB Seven MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_server does on CIB Seven MCP Server

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

WHY IT NEEDS A POLICY

Why set_server needs a policy

This tool modifies runtime configuration (switching target servers) which is reversible and constitutes a Write operation. Severity is high because misconfiguring the target server could redirect all subsequent API calls to an attacker-controlled endpoint, enabling credential harvesting or data exfiltration.

From the tool's definition Tool description states 'Switch the CIB Seven and Keycloak target at runtime' — modifying server configuration is a state change that affects subsequent operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_server Rate-limited

set_server 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": {
    "set_server": {
      "limits": [
        {
          "counter": "set_server_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 CIB Seven MCP Server, so you can run agents against it safely.

FAQ

Questions about set_server

What does the set_server tool do? +

Switch the CIB Seven and Keycloak target at runtime without restart. Provide \. It is categorised as a Write tool in the CIB Seven MCP 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 set_server? +

Register the CIB Seven MCP Server MCP server in PolicyLayer and add a rule for set_server: 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 CIB Seven MCP Server. Nothing to install.

What risk level is set_server? +

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

Can I rate-limit set_server? +

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

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

set_server is provided by the CIB Seven MCP Server MCP server (krixerx/cib7-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.