aap_assign_role · AAP MCP Server MCP: Risk & Policy

WHAT IT DOES

What aap_assign_role does on AAP MCP Server

AI agents use aap_assign_role 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_assign_role needs a policy

This tool modifies user access control and permissions within Ansible Automation Platform by assigning RBAC roles. While reversible (roles can be unassigned), it creates a persistent change to user entitlements that affects system security posture.

From the tool's definition Tool name 'aap_assign_role' and description 'Assign an RBAC role to an AAP user' indicate modification of user permissions/access control in an enterprise automation platform.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

aap_assign_role Rate-limited

aap_assign_role 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_assign_role": {
      "limits": [
        {
          "counter": "aap_assign_role_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_assign_role

What does the aap_assign_role tool do? +

Assign an RBAC role to an AAP user. 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_assign_role? +

Register the AAP MCP Server MCP server in PolicyLayer and add a rule for aap_assign_role: 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_assign_role? +

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

Can I rate-limit aap_assign_role? +

Yes. Add a rate_limit block to the aap_assign_role 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_assign_role completely? +

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

aap_assign_role 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.