AI agents use add_slide to create or update resources in Gg — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Gg environment.
Adding a slide modifies a presentation by creating new content, which falls squarely into the Write category. The operation is reversible (slides can be removed, presentations can be undone), so it is not Destructive. The blast radius is low because it merely appends content without overwriting or deleting existing data, and has no external side effects beyond the presentation itself.
From the tool's definition Tool description states 'Add a new slide to a presentation', which creates new content in Google Slides. This is a reversible write operation—slides can be deleted or the presentation reverted. The tool does not execute code, delete data, or move money.
Attacks that exploit this kind of access
Add a new slide to a presentation. Layouts: BLANK, TITLE, TITLE_AND_BODY, TITLE_AND_TWO_COLUMNS, TITLE_ONLY, SECTION_HEADER, CAPTION_ONLY, BIG_NUMBER. It is categorised as a Write tool in the Gg MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Gg 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 Gg. 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 Gg MCP server (tannht/google-cloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
add_slide is one line of Gg's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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