masks_get_thumbnail

Get thumbnail for a specific mask

SERVERPropresenter SOURCE@alxpark/propresenter-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-alxpark-propresenter-mcp/masks-get-thumbnail.md

WHAT IT DOES

What masks_get_thumbnail does on Propresenter

AI agents call masks_get_thumbnail to retrieve information from Propresenter without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why masks_get_thumbnail is rated Low

This tool retrieves/fetches a thumbnail image for a mask. It is a read-only operation that queries data without creating, modifying, deleting, or executing any external operations. The verb 'get' and the retrieval nature of thumbnail fetching confirm this is a Read category tool with low severity.

From the tool's definition Tool name 'masks_get_thumbnail' and description 'Get thumbnail for a specific mask' indicate a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs masks_get_thumbnail safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Propresenter, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For masks_get_thumbnail, this is the rule to start with:

masks_get_thumbnail Allowed

masks_get_thumbnail is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Propresenter, apply this rule, and every masks_get_thumbnail call is checked against it from then on.

FAQ

Questions about masks_get_thumbnail

What does the masks_get_thumbnail tool do? +

Get thumbnail for a specific mask. 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 masks_get_thumbnail? +

Register the Propresenter MCP server in PolicyLayer and add a rule for masks_get_thumbnail: 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 masks_get_thumbnail? +

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

Can I rate-limit masks_get_thumbnail? +

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

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

masks_get_thumbnail 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.

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