AI agents call get_draft to retrieve information from Gmail MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves a draft message by its ID. It is a read-only operation that queries and returns data without creating, modifying, deleting, or executing any actions. The retrieval of email drafts poses minimal security risk as it only accesses existing data.
From the tool's definition Tool name 'get_draft' and description 'Get a specific draft by ID' indicate retrieval of data without modification. No side effects or destructive operations are performed.
Documented attack patterns abuse exactly the kind of access get_draft gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Gmail MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_draft:
{
"version": "1",
"default": "deny",
"tools": {
"get_draft": {}
}
}get_draft is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get a specific draft by ID. It is categorised as a Read tool in the Gmail MCP MCP Server, which means it retrieves data without modifying state.
Register the Gmail MCP server in PolicyLayer and add a rule for get_draft: 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. Nothing to install.
get_draft 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 get_draft 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 get_draft. 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.
get_draft is provided by the Gmail MCP server (shinzo-labs/gmail-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 65 Gmail MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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65 Gmail MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.