Render PPTX slide(s) to PNG image(s) for visual verification. Returns path(s) to PNG files that can be viewed with the Read tool. slide_index: 0-based (-1 = all slides). dpi: 150 for review, 300 for print.
AI agents call pptx_render_slide to retrieve information from Pptx without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and exports existing presentation data into viewable image format. It has no side effects on the presentation itself—no creation, modification, deletion, or execution of external operations. It is purely a retrieval/conversion operation, making it a Read-category tool with low severity since it cannot cause harm through misuse.
From the tool's definition Tool 'renders' slides 'to PNG image(s) for visual verification' and 'returns path(s) to PNG files that can be viewed'. The description explicitly states it retrieves/exports data (slide content as images) with no modification of the underlying presentation.
Attacks that exploit this kind of access
Render PPTX slide(s) to PNG image(s) for visual verification. Returns path(s) to PNG files that can be viewed with the Read tool. slide_index: 0-based (-1 = all slides). dpi: 150 for review, 300 for print. It is categorised as a Read tool in the Pptx MCP Server, which means it retrieves data without modifying state.
Register the Pptx MCP server in PolicyLayer and add a rule for pptx_render_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 Pptx. Nothing to install.
pptx_render_slide is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the pptx_render_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 pptx_render_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.
pptx_render_slide is provided by the Pptx MCP server (knorq-ai/pptx-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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