List email threads (conversations) from Gmail. Each thread contains all messages in a conversation.
AI agents call listGmailThreads to retrieve information from Google Workspace MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns Gmail thread data without creating, modifying, or deleting any information. It is a simple read operation that retrieves existing email conversations. The severity is low because exposing email thread metadata has minimal blast radius compared to more sensitive operations, though it does provide visibility into email content.
From the tool's definition Tool name 'listGmailThreads' and description 'List email threads (conversations) from Gmail' indicate a retrieval operation with no data modification.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
List email threads (conversations) from Gmail. Each thread contains all messages in a conversation. It is categorised as a Read tool in the Google Workspace MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Google Workspace MCP Server MCP server in PolicyLayer and add a rule for listGmailThreads: 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 Google Workspace MCP Server. Nothing to install.
listGmailThreads 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 listGmailThreads 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 listGmailThreads. 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.
listGmailThreads is provided by the Google Workspace MCP Server MCP server (pm990320/google-workspace-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →