ppt_slideshow_previous

THE RISK

High Risk

This tool triggers an external operation (navigating a live PowerPoint slideshow via COM automation). It doesn't read data, write/create content, or destroy anything — it executes a navigation action in a running presentation session. Severity is low since the blast radius is minimal: it only moves the slideshow back one slide.

From the tool's definition Go back to the previous slide in the running slide show

Documented attack patterns abuse exactly the kind of access ppt_slideshow_previous gives an agent:

HOW TO CONTROL PPT_SLIDESHOW_PREVIOUS

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_slideshow_previous:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "ppt_slideshow_previous": {
      "limits": [
        {
          "counter": "ppt_slideshow_previous_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

ppt_slideshow_previous stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Ppt — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

More Ppt tools

Destructive ppt_clear_animations Clear all animations from a slide (main sequence and interactive sequences). Destructive ppt_delete_comment Delete a comment from a slide by its 1-based index. Destructive ppt_delete_node ppt_delete_node Destructive ppt_delete_shape Delete a shape from a slide. Destructive ppt_delete_slide ppt_delete_slide Destructive ppt_delete_table_column Delete a column from a table. Destructive ppt_delete_table_row Delete a row from a table. Destructive ppt_remove_animation ppt_remove_animation

All 156 Ppt tools →

Execute tools on other servers

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Go deeper

High-risk tools in Ppt → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

What does the ppt_slideshow_previous tool do? +

Go back to the previous slide in the running slide show. It is categorised as a Execute tool in the Ppt MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on ppt_slideshow_previous? +

Register the Ppt MCP server in PolicyLayer and add a rule for ppt_slideshow_previous: 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.

What risk level is ppt_slideshow_previous? +

ppt_slideshow_previous is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit ppt_slideshow_previous? +

Yes. Add a rate_limit block to the ppt_slideshow_previous 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.

How do I block ppt_slideshow_previous completely? +

Set action: deny in the PolicyLayer policy for ppt_slideshow_previous. 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.

What MCP server provides ppt_slideshow_previous? +

ppt_slideshow_previous 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.

Enforce policy on every Ppt tool call.

Deterministic rules across all 156 Ppt tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

GOVERN PPT →

Free to start. No card required.

156 Ppt tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

// WHAT PPT_SLIDESHOW_PREVIOUS ON PPT DOES

// THE RISK

// HOW TO CONTROL PPT_SLIDESHOW_PREVIOUS

// EXPLORE