iac_terraform_plan · Infra Ops MCP: Risk & Policy

WHAT IT DOES

What iac_terraform_plan does on Infra Ops

AI agents invoke iac_terraform_plan to trigger actions in Infra Ops. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why iac_terraform_plan needs a policy

Terraform plan runs actual code against cloud provider APIs to evaluate state differences. While it doesn't apply changes, it executes external operations, reads secrets/credentials, and can reveal sensitive infrastructure details. Misuse could expose sensitive configuration, trigger API rate limits, or in some configurations cause unintended side effects. It spans Execute territory clearly.

From the tool's definition 'Run Terraform plan to preview infrastructure changes' — actively executes the terraform plan command against real infrastructure

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

iac_terraform_plan Rate-limited

iac_terraform_plan stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "iac_terraform_plan": {
      "limits": [
        {
          "counter": "iac_terraform_plan_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Infra Ops, so you can run agents against it safely.

FAQ

Questions about iac_terraform_plan

What does the iac_terraform_plan tool do? +

Run Terraform plan to preview infrastructure changes. It is categorised as a Execute tool in the Infra Ops MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on iac_terraform_plan? +

Register the Infra Ops MCP server in PolicyLayer and add a rule for iac_terraform_plan: 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 Infra Ops. Nothing to install.

What risk level is iac_terraform_plan? +

iac_terraform_plan is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit iac_terraform_plan? +

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

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

iac_terraform_plan is provided by the Infra Ops MCP server (skyvanguard/infra-ops-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.