aap_update_host · AAP MCP Server MCP: Risk & Policy

WHAT IT DOES

What aap_update_host does on AAP MCP Server

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

WHY IT NEEDS A POLICY

Why aap_update_host needs a policy

This tool creates or modifies host configuration data within Ansible Automation Platform, which is a reversible operation (hosts can be re-updated or restored). It does not execute arbitrary commands, delete resources, or move money.

From the tool's definition Tool name 'aap_update_host' with description 'Update an existing AAP host (PATCH)' indicates modification of existing infrastructure data. PATCH is an HTTP method for partial updates. The AAP context means this modifies Ansible inventory/host configuration.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

aap_update_host Rate-limited

aap_update_host 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": {
    "aap_update_host": {
      "limits": [
        {
          "counter": "aap_update_host_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 AAP MCP Server, so you can run agents against it safely.

FAQ

Questions about aap_update_host

What does the aap_update_host tool do? +

Update an existing AAP host (PATCH). It is categorised as a Write tool in the AAP 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 aap_update_host? +

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

What risk level is aap_update_host? +

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

Can I rate-limit aap_update_host? +

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

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

aap_update_host is provided by the AAP MCP Server MCP server (srinivassrinu842/aap-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.