Get list of all Gmail labels
AI agents call gmail_get_labels to retrieve information from Gmail & PostgreSQL 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 or lists Gmail labels, which is a read-only operation with no side effects. It does not create, modify, delete, execute code, or commit financial transactions. The blast radius of misuse is minimal—an agent could at most learn what labels exist, which poses low risk to the user.
From the tool's definition Tool name 'gmail_get_labels' and description 'Get list of all Gmail labels' indicate a query operation that retrieves metadata about user labels without modifying data.
Attacks that exploit this kind of access
Get list of all Gmail labels. It is categorised as a Read tool in the Gmail & PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Gmail & PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for gmail_get_labels: 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 & PostgreSQL MCP Server. Nothing to install.
gmail_get_labels 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_get_labels 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_get_labels. 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_get_labels is provided by the Gmail & PostgreSQL MCP Server MCP server (marouanemkm/gmail-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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