Sets the value of a specific cell (e.g., 'A1').
AI agents use set_cell_value to create or update resources in PowerPoint MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your PowerPoint MCP Server environment.
This tool modifies cell values within PowerPoint worksheets, which is a reversible write operation. It creates or updates data rather than executing code, deleting data, or moving money. Severity is medium because misuse could corrupt presentation data or inject false information into financial charts mentioned in the server description, but the changes are reversible and localized to individual cells.
From the tool's definition Tool name 'set_cell_value' and description 'Sets the value of a specific cell (e.g., \'A1\')' indicate modification of cell data in a worksheet context. The verb 'Sets' confirms write/create operation on spreadsheet data.
Documented attack patterns abuse exactly the kind of access set_cell_value gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PowerPoint MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for set_cell_value:
{
"version": "1",
"default": "deny",
"tools": {
"set_cell_value": {
"limits": [
{
"counter": "set_cell_value_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}set_cell_value 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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Sets the value of a specific cell (e.g., 'A1'). It is categorised as a Write tool in the PowerPoint MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the PowerPoint MCP Server MCP server in PolicyLayer and add a rule for set_cell_value: 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 PowerPoint MCP Server. Nothing to install.
set_cell_value 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 set_cell_value 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 set_cell_value. 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.
set_cell_value is provided by the PowerPoint MCP Server MCP server (jenstangen1/pptx-xlsx-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from PowerPoint MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
37 PowerPoint MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.