create_ad · Claude Meta MCP: Risk & Policy

WHAT IT DOES

What create_ad does on Claude Meta

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

WHY IT NEEDS A POLICY

Why create_ad needs a policy

This tool creates new ad objects, which is a Write operation (reversible modification of data). While it doesn't execute arbitrary code or delete data, creating ads has high severity because: (1) it can result in real financial commitments if the ad set is activated, (2) it could impact brand reputation if misused to create inappropriate ads, and (3) it requires valid account permissions to execute.

From the tool's definition Tool name is 'create_ad' and description states 'Create an ad inside an ad set', which is a reversible creation operation. The tool creates advertising objects within Meta's ad management system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_ad Rate-limited

create_ad 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": {
    "create_ad": {
      "limits": [
        {
          "counter": "create_ad_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 Claude Meta, so you can run agents against it safely.

FAQ

Questions about create_ad

What does the create_ad tool do? +

Create an ad inside an ad set. Defaults to status=PAUSED. Requires a creative_id from create_ad_creative. It is categorised as a Write tool in the Claude Meta MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_ad? +

Register the Claude Meta MCP server in PolicyLayer and add a rule for create_ad: 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 Claude Meta. Nothing to install.

What risk level is create_ad? +

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

Can I rate-limit create_ad? +

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

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

create_ad is provided by the Claude Meta MCP server (maxx3250/claude-meta-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.