AI agents call keynote_export_slide_image to retrieve information from Keynote without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool exports/reads a slide as an image for visual analysis. While it writes a PNG file to disk, its primary purpose is read/query — generating a visual snapshot of existing content for analysis. The file created is a derivative read artifact (like a screenshot), not a modification of source data. No data is deleted, modified, or sent externally.
From the tool's definition Export a single slide as a PNG image. Returns the file path.
Attacks that exploit this kind of access
Export a single slide as a PNG image. Returns the file path. Use the Read tool on that path to visually analyze the slide with vision. It is categorised as a Read tool in the Keynote MCP Server, which means it retrieves data without modifying state.
Register the Keynote MCP server in PolicyLayer and add a rule for keynote_export_slide_image: 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 Keynote. Nothing to install.
keynote_export_slide_image 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 keynote_export_slide_image 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 keynote_export_slide_image. 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.
keynote_export_slide_image is provided by the Keynote MCP server (tszaks/keynote-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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