reply_google_business_review · Posterly MCP: Risk & Policy

WHAT IT DOES

What reply_google_business_review does on Posterly

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

WHY IT NEEDS A POLICY

Why reply_google_business_review needs a policy

This tool creates new content (owner replies) or modifies existing replies on Google Business Profile reviews. These are reversible operations (replies can be edited or deleted), making it a Write category tool. Severity is medium because misuse could damage business reputation through inappropriate review responses, but the tool explicitly requires user confirmation before execution, mitigating risk.

From the tool's definition Tool description states 'Post or update the owner reply on a Google Business Profile review' and explicitly labels action as 'WRITE'. This creates or modifies review reply content on a third-party platform (Google Business Profile).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

reply_google_business_review Rate-limited

reply_google_business_review 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": {
    "reply_google_business_review": {
      "limits": [
        {
          "counter": "reply_google_business_review_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 Posterly, so you can run agents against it safely.

FAQ

Questions about reply_google_business_review

What does the reply_google_business_review tool do? +

Post or update the owner reply on a Google Business Profile review. WRITE: show the review, location, and exact reply text to the user, then pass confirm=true only after explicit confirmation. It is categorised as a Write tool in the Posterly MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on reply_google_business_review? +

Register the Posterly MCP server in PolicyLayer and add a rule for reply_google_business_review: 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 Posterly. Nothing to install.

What risk level is reply_google_business_review? +

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

Can I rate-limit reply_google_business_review? +

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

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

reply_google_business_review is provided by the Posterly MCP server (posterly-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.