AI agents use add_slide to create or update resources in PowerPoint MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PowerPoint MCP Server environment.
This tool creates new slides in a PowerPoint presentation, which modifies the presentation structure reversibly. It falls under Write category as it adds content without executing external code or permanently destroying data. Severity is medium because misuse could inflate presentation size or pollute the document structure, but the effects are easily undone.
From the tool's definition Tool name 'add_slide' and description 'Add a new slide to the presentation' indicate creation of new content. The action is reversible (slides can be deleted), and there are no irreversible deletions, code execution, or financial implications.
Documented attack patterns abuse exactly the kind of access add_slide gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PowerPoint MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_slide:
{
"version": "1",
"default": "deny",
"tools": {
"add_slide": {
"limits": [
{
"counter": "add_slide_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_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.
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Add a new slide to the presentation. It is categorised as a Write tool in the PowerPoint MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the PowerPoint MCP Server MCP server in PolicyLayer and add a rule for add_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 PowerPoint MCP Server. Nothing to install.
add_slide is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the add_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.
Set action: deny in the PolicyLayer policy for add_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.
add_slide is provided by the PowerPoint MCP Server MCP server (jenstangen1/pptx-xlsx-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from PowerPoint MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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37 PowerPoint MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.