create_bridge_domain · ACI MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_bridge_domain does on ACI MCP Server

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

WHY IT NEEDS A POLICY

Why create_bridge_domain needs a policy

Creating a bridge domain is a write operation that establishes a new Layer 2 forwarding domain in the ACI fabric, modifying the network configuration. This is reversible (the sibling tool 'delete_bridge_domain' confirms deletion is possible), so it falls under Write rather than Destructive.

From the tool's definition Tool name is 'create_bridge_domain' and description states 'Create a new bridge domain'. This creates a new network infrastructure object in Cisco ACI.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_bridge_domain Rate-limited

create_bridge_domain 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": {
    "create_bridge_domain": {
      "limits": [
        {
          "counter": "create_bridge_domain_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 ACI MCP Server, so you can run agents against it safely.

FAQ

Questions about create_bridge_domain

What does the create_bridge_domain tool do? +

Create a new bridge domain. It is categorised as a Write tool in the ACI 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 create_bridge_domain? +

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

What risk level is create_bridge_domain? +

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

Can I rate-limit create_bridge_domain? +

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

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

create_bridge_domain is provided by the ACI MCP Server MCP server (jim-coyne/aci_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.