AI agents use ppt_change_chart_type 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.
Changing a chart type modifies presentation data but does not delete, destroy, or execute arbitrary code. The change is reversible (can be undone or changed again). This is a Write operation with medium severity because misuse could corrupt or alter presentation integrity, but the blast radius is limited to a single chart's visual representation without data loss or external effects.
From the tool's definition Tool name 'ppt_change_chart_type' and description 'Change the type of an existing chart' indicate modification of existing presentation content. This is a reversible edit operation.
Documented attack patterns abuse exactly the kind of access ppt_change_chart_type 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_change_chart_type:
{
"version": "1",
"default": "deny",
"tools": {
"ppt_change_chart_type": {
"limits": [
{
"counter": "ppt_change_chart_type_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ppt_change_chart_type 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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Change the type of an existing chart. 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_change_chart_type: 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_change_chart_type 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_change_chart_type 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_change_chart_type. 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_change_chart_type 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.
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156 Ppt tools catalogued and risk-classified — across an index of 42,500+ MCP servers.