AI agents call word_selectAll to retrieve information from MCP Office Interop Word Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Selecting all content in a document is a non-destructive read-like operation that changes the active selection state but does not modify, delete, or create any data. It has minimal blast radius on its own, though it could be a precursor to destructive actions when combined with other tools.
From the tool's definition Selects the entire document
Risk signalsBulk/mass operation — affects multiple targets
Documented attack patterns abuse exactly the kind of access word_selectAll gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Office Interop Word Server, and nothing reaches the server without passing your rules. This is the rule we recommend for word_selectAll:
{
"version": "1",
"default": "deny",
"tools": {
"word_selectAll": {}
}
} word_selectAll is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Selects the entire document. It is categorised as a Read tool in the MCP Office Interop Word Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Office Interop Word Server MCP server in PolicyLayer and add a rule for word_selectAll: 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 MCP Office Interop Word Server. Nothing to install.
word_selectAll is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the word_selectAll 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 word_selectAll. 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.
word_selectAll is provided by the MCP Office Interop Word Server MCP server (mario-andreschak/mcp-msoffice-interop-word). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Office Interop Word Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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37 MCP Office Interop Word Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.