Download a file from SharePoint or OneDrive via Microsoft Graph API. Returns file content directly to the agent: images are returned inline, text files as text content, and binary files (Office docs, PDFs) are saved to disk. Supports optional format conversion (e.g., PDF).
AI agents call download_file to retrieve information from Microsoft Graph MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and reads file content from cloud storage without creating, modifying, or deleting data. It is a Read operation. Severity is medium rather than low because file downloads can expose sensitive documents (emails, financial records, intellectual property) depending on access controls and what the agent does with retrieved content, creating a moderate confidentiality risk if misused by a compromised…
From the tool's definition Tool description: 'Download a file from SharePoint or OneDrive via Microsoft Graph API. Returns file content directly to the agent'. The verb is 'Download', and the core function is retrieval of file content with no modification or deletion.
Attacks that exploit this kind of access
Download a file from SharePoint or OneDrive via Microsoft Graph API. Returns file content directly to the agent: images are returned inline, text files as text content, and binary files (Office docs, PDFs) are saved to disk. Supports optional format conversion (e.g., PDF). It is categorised as a Read tool in the Microsoft Graph MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Microsoft Graph MCP Server MCP server in PolicyLayer and add a rule for download_file: 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 Microsoft Graph MCP Server. Nothing to install.
download_file 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 download_file 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 download_file. 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.
download_file is provided by the Microsoft Graph MCP Server MCP server (sapientsai/microsoft-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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