update_ad · Claude Meta MCP: Risk & Policy

WHAT IT DOES

What update_ad does on Claude Meta

AI agents use update_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 update_ad needs a policy

This tool creates or modifies data reversibly by updating ad attributes without permanently deleting or destroying data. While it affects live advertising systems and has business implications, it does not move money (Financial), execute arbitrary code (Execute), or destroy data (Destructive).

From the tool's definition Tool description explicitly states 'WRITE OPERATION' and allows updating ad properties (name, status, creative). The tool modifies existing ad configurations reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_ad Rate-limited

update_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": {
    "update_ad": {
      "limits": [
        {
          "counter": "update_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 update_ad

What does the update_ad tool do? +

Update an ad (name, status, or creative). WRITE OPERATION. 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 update_ad? +

Register the Claude Meta MCP server in PolicyLayer and add a rule for update_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 update_ad? +

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

Can I rate-limit update_ad? +

Yes. Add a rate_limit block to the update_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 update_ad completely? +

Set action: deny in the PolicyLayer policy for update_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 update_ad? +

update_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.