AI agents use ppt_duplicate_shape to create or update resources in Ppt — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ppt environment.
Duplicating a shape modifies the presentation by adding new content, but the action is fully reversible (the duplicate can be deleted). This fits the Write category (creates or modifies data reversibly). Severity is medium because misuse could clutter presentations or create unwanted duplicates, but the impact is limited to a single shape and easily undone.
From the tool's definition Tool description states 'Duplicate a shape on the same slide' — this creates a new copy of an existing shape, which is a reversible modification of presentation content.
Documented attack patterns abuse exactly the kind of access ppt_duplicate_shape gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ppt, and nothing reaches the server without passing your rules. This is the rule we recommend for ppt_duplicate_shape:
{
"version": "1",
"default": "deny",
"tools": {
"ppt_duplicate_shape": {
"limits": [
{
"counter": "ppt_duplicate_shape_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ppt_duplicate_shape 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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Duplicate a shape on the same slide. It is categorised as a Write tool in the Ppt MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ppt MCP server in PolicyLayer and add a rule for ppt_duplicate_shape: 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 Ppt. Nothing to install.
ppt_duplicate_shape 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 ppt_duplicate_shape 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 ppt_duplicate_shape. 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.
ppt_duplicate_shape is provided by the Ppt MCP server (ykuwai/ppt-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 156 Ppt tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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156 Ppt tools catalogued and risk-classified — across an index of 42,500+ MCP servers.