gdb_close · GDB Lite MCP: Risk & Policy

WHAT IT DOES

What gdb_close does on GDB Lite MCP

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

WHY IT NEEDS A POLICY

Why gdb_close needs a policy

An AI agent can call gdb_close faster than any human can review — one bad instruction and it creates or modifies resources in GDB Lite MCP by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gdb_close Rate-limited

gdb_close 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": {
    "gdb_close": {
      "limits": [
        {
          "counter": "gdb_close_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 GDB Lite MCP, so you can run agents against it safely.

FAQ

Questions about gdb_close

What does the gdb_close tool do? +

Terminate and remove a gdb session. If session_id is unknown, returns the current gdb session list. It is categorised as a Write tool in the GDB Lite MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gdb_close? +

Register the GDB Lite MCP server in PolicyLayer and add a rule for gdb_close: 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 GDB Lite MCP. Nothing to install.

What risk level is gdb_close? +

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

Can I rate-limit gdb_close? +

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

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

gdb_close is provided by the GDB Lite MCP server (mort2000/gdb-lite-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.