add_slide · Wps MCP: Risk & Policy

WHAT IT DOES

What add_slide does on Wps

AI agents use add_slide to create or update resources in Wps — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Wps environment.

WHY IT NEEDS A POLICY

Why add_slide needs a policy

This tool creates new presentation slides, which is a reversible write operation. While it modifies a presentation file, the action can be undone (slides can be deleted). It does not execute code, delete data permanently, or move money. The medium severity reflects that careless use could clutter presentations, but the impact is easily correctable and limited in scope.

From the tool's definition Tool description states 'Add a new slide to presentation' which creates new content in an existing document, a reversible modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_slide Rate-limited

add_slide 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_slide": {
      "limits": [
        {
          "counter": "add_slide_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Wps, so you can run agents against it safely.

FAQ

Questions about add_slide

What does the add_slide tool do? +

Add a new slide to presentation. It is categorised as a Write tool in the Wps MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_slide? +

Register the Wps 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 Wps. Nothing to install.

What risk level is add_slide? +

add_slide is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit add_slide? +

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.

How do I block add_slide completely? +

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.

What MCP server provides add_slide? +

add_slide is provided by the Wps MCP server (xiao-rx/wps-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.