List emails from Gmail inbox. Can filter by query, maxResults, and labelIds.
AI agents call gmail_list_emails 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 and queries existing email data without side effects. It is a passive read operation that lists emails based on filters. While it may expose sensitive email content, the tool itself has no destructive, financial, or code-execution capability.
From the tool's definition Tool name 'gmail_list_emails' and description 'List emails from Gmail inbox' indicates retrieval of email data with filter parameters (query, maxResults, labelIds). No modification, deletion, or execution capability.
Attacks that exploit this kind of access
List emails from Gmail inbox. Can filter by query, maxResults, and labelIds. 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_list_emails: 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_list_emails 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_list_emails 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_list_emails. 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_list_emails 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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