List files in SharePoint sites or OneDrive folders using the same authenticated session
AI agents call outlook_list_sharepoint_files to retrieve information from Outlook without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries file information from SharePoint and OneDrive. It performs no write operations, does not execute code or scripts, does not delete data, and does not involve financial transactions. The only potential concern is information disclosure if the authenticated session has broad permissions, but that is a Read-category risk (access control issue, not tool capability issue).
From the tool's definition Tool name 'outlook_list_sharepoint_files' and description 'List files in SharePoint sites or OneDrive folders' — the verb 'list' indicates data retrieval without modification.
Documented attack patterns abuse exactly the kind of access outlook_list_sharepoint_files gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Outlook, and nothing reaches the server without passing your rules. This is the rule we recommend for outlook_list_sharepoint_files:
{
"version": "1",
"default": "deny",
"tools": {
"outlook_list_sharepoint_files": {}
}
}outlook_list_sharepoint_files is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List files in SharePoint sites or OneDrive folders using the same authenticated session. It is categorised as a Read tool in the Outlook MCP Server, which means it retrieves data without modifying state.
Register the Outlook MCP server in PolicyLayer and add a rule for outlook_list_sharepoint_files: 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 Outlook. Nothing to install.
outlook_list_sharepoint_files 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 outlook_list_sharepoint_files 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 outlook_list_sharepoint_files. 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.
outlook_list_sharepoint_files is provided by the Outlook MCP server (xenoxilus/outlook-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Outlook, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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43 Outlook tools catalogued and risk-classified — across an index of 43,000+ MCP servers.