add_default_route · OCI MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_default_route does on OCI MCP Server

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

WHY IT NEEDS A POLICY

Why add_default_route needs a policy

This tool modifies network routing configuration by adding a route to a route table. While the operation is technically reversible (routes can be deleted), it is a Write operation because it creates/modifies infrastructure state rather than executing arbitrary code or permanently destroying data.

From the tool's definition Tool performs 'Append a route' operation on a route table, which modifies networking infrastructure configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_default_route Rate-limited

add_default_route 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": {
    "add_default_route": {
      "limits": [
        {
          "counter": "add_default_route_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 OCI MCP Server, so you can run agents against it safely.

FAQ

Questions about add_default_route

What does the add_default_route tool do? +

Append a route (cidr -> gateway/IGW/NAT/Service GW) to a route table. It is categorised as a Write tool in the OCI 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 add_default_route? +

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

What risk level is add_default_route? +

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

Can I rate-limit add_default_route? +

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

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

add_default_route is provided by the OCI MCP Server MCP server (sarthak-pansare/oci-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.