Read file content. Auto-detects Workspace types: Docs→Markdown, Sheets→CSV, Slides→text. Binary under 10MB as base64.
AI agents call gdrive_read_file to retrieve information from Mcp Google Gdrive without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is fundamentally a retrieval operation (Read category) with no side effects—it queries and returns file content without creating, modifying, or deleting data. However, severity is medium rather than low because: (1) it can exfiltrate sensitive data from Google Drive if an AI agent is compromised or misdirected; (2) Google Drive often contains confidential business documents, financial records, or personal…
From the tool's definition Tool description states 'Read file content' and explicitly converts Google Workspace formats to Markdown, CSV, and text. Returns file data without modification or deletion.
Attacks that exploit this kind of access
Read file content. Auto-detects Workspace types: Docs→Markdown, Sheets→CSV, Slides→text. Binary under 10MB as base64. It is categorised as a Read tool in the Mcp Google Gdrive MCP Server, which means it retrieves data without modifying state.
Register the Mcp Google Gdrive MCP server in PolicyLayer and add a rule for gdrive_read_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 Mcp Google Gdrive. Nothing to install.
gdrive_read_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 gdrive_read_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 gdrive_read_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.
gdrive_read_file is provided by the Mcp Google Gdrive MCP server (sleepytimeshon/mcp-google-gdrive). 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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