AI agents use add_text 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.
Adding text to a slide is a Write operation—it modifies the presentation's content in a reversible manner. The user can delete or edit the text later. It does not execute arbitrary code, delete irreversibly, move financial assets, or trigger external systems.
From the tool's definition Tool name 'add_text' and description 'Add text to a slide' indicate it creates or modifies content within a PowerPoint presentation. This is a reversible modification operation.
Documented attack patterns abuse exactly the kind of access add_text 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_text:
{
"version": "1",
"default": "deny",
"tools": {
"add_text": {
"limits": [
{
"counter": "add_text_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_text 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 text to a slide. 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_text: 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_text 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_text 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_text. 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_text 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.