messages_get_all

THE RISK

Low Risk

Why messages_get_all needs a policy

This tool retrieves and queries message data from ProPresenter 7 without causing side effects. It aligns with the Read category: retrieves or queries data with no side effects (search, list, get, fetch). The blast radius of misuse is minimal—an AI agent could only access existing message data. No data is modified, deleted, or financial/destructive operations occur.

From the tool's definition Tool name 'messages_get_all' combined with description 'Get a list of all messages' indicates a retrieval operation with no modification, deletion, or execution of external operations.

Risk signalsBulk/mass operation — affects multiple targets

Documented attack patterns abuse exactly the kind of access messages_get_all gives an agent:

POLICY

How to control messages_get_all

PolicyLayer is an MCP gateway — it sits between your AI agents and Propresenter, and nothing reaches the server without passing your rules. This is the rule we recommend for messages_get_all:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "messages_get_all": {}
  }
}

messages_get_all is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Propresenter — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Propresenter tools

Destructive clear_layer Clear a specific layer (audio, props, messages, announcements, slide, media, video_input) Destructive messages_delete Delete a specific message Destructive props_clear Clear a specific prop from display Destructive props_delete Delete a specific prop Destructive props_delete_collection Delete a specific prop collection Destructive stage_delete_layout Delete a specific stage layout Execute clear_trigger_group Trigger a specific clear group Execute props_pause_auto_clear Pause auto-clear for a specific prop

All 177 Propresenter tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about messages_get_all

What does the messages_get_all tool do? +

Get a list of all messages. It is categorised as a Read tool in the Propresenter MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on messages_get_all? +

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

What risk level is messages_get_all? +

messages_get_all is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit messages_get_all? +

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

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

messages_get_all is provided by the Propresenter MCP server (@alxpark/propresenter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Propresenter tool call.

Start from Propresenter, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →