themes_set_slide

Update a specific slide in a theme

SERVERPropresenter SOURCE@alxpark/propresenter-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-alxpark-propresenter-mcp/themes-set-slide.md

WHAT IT DOES

What themes_set_slide does on Propresenter

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

RISK

Why themes_set_slide is rated Medium

This tool modifies theme slide content, which is a Write operation—it creates or modifies data reversibly. Severity is medium because misuse could alter presentation themes affecting multiple slides/presentations, but the changes are reversible and don't delete data or execute arbitrary code. Confidence is 0.85 as the description is clear but lacks detail on scope of modifications.

From the tool's definition Tool name 'themes_set_slide' and description 'Update a specific slide in a theme' indicate modification of theme data. The verb 'Update' confirms reversible data change.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs themes_set_slide 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 themes_set_slide, this is the rule to start with:

themes_set_slide Rate-limited

themes_set_slide 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": {
    "themes_set_slide": {
      "limits": [
        {
          "counter": "themes_set_slide_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about themes_set_slide

What does the themes_set_slide tool do? +

Update a specific slide in a theme. It is categorised as a Write tool in the Propresenter MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on themes_set_slide? +

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

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

Can I rate-limit themes_set_slide? +

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

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

themes_set_slide 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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