List all draft emails
AI agents call gmail.listDrafts 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 retrieves and enumerates draft emails from a user's Gmail account. It performs no modifications, deletions, or external operations—purely data retrieval. While draft emails may contain sensitive content, the blast radius of misuse is limited to information disclosure rather than destructive or financial harm. Severity is low because reading drafts, while privacy-sensitive, is a standard read operation.
From the tool's definition Tool name 'listDrafts' and description 'List all draft emails' indicate a retrieval/query operation with no side effects. The verb 'list' is a standard read operation that queries existing data.
Attacks that exploit this kind of access
List all draft emails. 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 gmail.listDrafts: 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.
gmail.listDrafts 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 gmail.listDrafts 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 gmail.listDrafts. 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.
gmail.listDrafts is provided by the Gmail MCP Server MCP server (shcallaway/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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