terraform-output

THE RISK

Low Risk

Why terraform-output needs a policy

This tool retrieves computed outputs from Terraform state, which is a read-only query operation. Terraform outputs are metadata or computed values exposed by configurations and do not involve executing code, modifying infrastructure, or deleting resources. The blast radius of misuse is minimal—an agent could only learn information already declared in the Terraform state.

From the tool's definition Tool name 'terraform-output' and description 'Get outputs from Terraform state' indicate a retrieval operation that queries existing state data without modification or side effects.

Documented attack patterns abuse exactly the kind of access terraform-output gives an agent:

POLICY

How to control terraform-output

PolicyLayer is an MCP gateway — it sits between your AI agents and Ansible, and nothing reaches the server without passing your rules. This is the rule we recommend for terraform-output:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "terraform-output": {}
  }
}

terraform-output is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Ansible — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about terraform-output

What does the terraform-output tool do? +

Get outputs from Terraform state. It is categorised as a Read tool in the Ansible MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on terraform-output? +

Register the Ansible MCP server in PolicyLayer and add a rule for terraform-output: 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 Ansible. Nothing to install.

What risk level is terraform-output? +

terraform-output is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit terraform-output? +

Yes. Add a rate_limit block to the terraform-output 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 terraform-output completely? +

Set action: deny in the PolicyLayer policy for terraform-output. 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 terraform-output? +

terraform-output is provided by the Ansible MCP server (washyu/ansible-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Ansible tool call.

Start from Ansible, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →