list_gmail_attachments
AI agents call list_gmail_attachments to retrieve information from Gmail MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool lists attachments, retrieving metadata about files associated with emails. Listing is a query operation with no side effects—it does not modify, delete, or execute anything. The empty description lowers confidence slightly, but the naming convention and context from sibling tools (read_gmail_attachment, search, archive, label operations) strongly indicate this is a read-only retrieval function.
From the tool's definition Tool name 'list_gmail_attachments' indicates retrieval/listing of attachment metadata. Server description confirms tool-level access to Gmail includes reading emails and attachments. The 'list_' prefix is a strong signal of a non-mutating query operation.
Attacks that exploit this kind of access
list_gmail_attachments. It is categorised as a Read tool in the Gmail MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Gmail MCP Server MCP server in PolicyLayer and add a rule for list_gmail_attachments: 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 Gmail MCP Server. Nothing to install.
list_gmail_attachments 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 list_gmail_attachments 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 list_gmail_attachments. 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.
list_gmail_attachments is provided by the Gmail MCP Server MCP server (stevesimpson418/gmail-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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