add_post · Google Maps MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_post does on Google Maps MCP Server

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

WHY IT NEEDS A POLICY

Why add_post needs a policy

This tool creates new data (a text post) in a reversible manner. It does not query data (Read), execute arbitrary code (Execute), permanently delete data (Destructive), or involve financial transactions (Financial). The action is reversible—posts can typically be edited or deleted afterward. The blast radius is limited to the creation of a single post, making severity low.

From the tool's definition Tool name 'add_post' and description 'Adds a simple text post' indicate creation of new data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_post Rate-limited

add_post 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": {
    "add_post": {
      "limits": [
        {
          "counter": "add_post_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 Google Maps MCP Server, so you can run agents against it safely.

FAQ

Questions about add_post

What does the add_post tool do? +

Adds a simple text post. It is categorised as a Write tool in the Google Maps 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 add_post? +

Register the Google Maps MCP Server MCP server in PolicyLayer and add a rule for add_post: 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 Google Maps MCP Server. Nothing to install.

What risk level is add_post? +

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

Can I rate-limit add_post? +

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

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

add_post is provided by the Google Maps MCP Server MCP server (moe03/mcp-hello-world). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

add_post is one line of Google Maps MCP Server's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

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