AI agents use ppt_add_line to create or update resources in Ppt — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Ppt environment.
This tool creates (adds) a new visual object to a PowerPoint slide, which is a reversible modification of presentation data. It does not execute arbitrary code, delete content, or cause financial effects. The blast radius is minimal since adding a line is a non-destructive, easily-undoable action typical of presentation editing.
From the tool's definition Tool name 'ppt_add_line' and description 'Add a straight line to a slide' indicate creation of a new graphical element in a presentation.
Documented attack patterns abuse exactly the kind of access ppt_add_line gives an agent:
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_add_line:
{
"version": "1",
"default": "deny",
"tools": {
"ppt_add_line": {
"limits": [
{
"counter": "ppt_add_line_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ppt_add_line 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.
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Add a straight line to a slide. It is categorised as a Write tool in the Ppt MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Ppt MCP server in PolicyLayer and add a rule for ppt_add_line: 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.
ppt_add_line 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 ppt_add_line 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 ppt_add_line. 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.
ppt_add_line 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.
Deterministic rules across all 156 Ppt tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
156 Ppt tools catalogued and risk-classified — across an index of 42,500+ MCP servers.