close_contam_bridge_session · CONTAM MCP: Risk & Policy

WHAT IT DOES

What close_contam_bridge_session does on CONTAM MCP

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

WHY IT NEEDS A POLICY

Why close_contam_bridge_session needs a policy

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

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

close_contam_bridge_session Rate-limited

close_contam_bridge_session 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": {
    "close_contam_bridge_session": {
      "limits": [
        {
          "counter": "close_contam_bridge_session_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 CONTAM MCP, so you can run agents against it safely.

FAQ

Questions about close_contam_bridge_session

What does the close_contam_bridge_session tool do? +

Use this when you want to end an active ContamX bridge-mode session and release the spawned process and socket. It is categorised as a Write tool in the CONTAM 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 close_contam_bridge_session? +

Register the CONTAM MCP server in PolicyLayer and add a rule for close_contam_bridge_session: 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 CONTAM MCP. Nothing to install.

What risk level is close_contam_bridge_session? +

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

Can I rate-limit close_contam_bridge_session? +

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

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

close_contam_bridge_session is provided by the CONTAM MCP server (summer521521/contam_plugin). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.