AI agents use ppt_set_theme_colors 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.
The tool modifies presentation properties (theme colors) reversibly—changes can be undone in PowerPoint. This is a Write operation, not Destructive. Severity is medium because theme changes affect presentation appearance across slides but are non-critical and reversible. Confidence is moderate (0.75) due to empty description, but the name and server context clearly indicate a Write action.
From the tool's definition Tool name 'ppt_set_theme_colors' indicates modification of presentation theme colors. Server description confirms this is part of 155 tools for creating and editing presentations via COM automation.
Documented attack patterns abuse exactly the kind of access ppt_set_theme_colors 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_set_theme_colors:
{
"version": "1",
"default": "deny",
"tools": {
"ppt_set_theme_colors": {
"limits": [
{
"counter": "ppt_set_theme_colors_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}ppt_set_theme_colors 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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ppt_set_theme_colors. 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_set_theme_colors: 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_set_theme_colors 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_set_theme_colors 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_set_theme_colors. 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_set_theme_colors 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.