Check Google Chat external messaging restrictions. Controls who users can message outside the organization.
AI agents call check_chat_external_restrictions to retrieve information from Google Workspace Compliance Audit Tool without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves the current state of Google Chat external messaging policies. It performs compliance auditing by reading configuration settings, consistent with other sibling audit tools (check_2fa_status, check_admin_roles, check_audit_log_settings). There is no indication it modifies policies, executes commands, or deletes data.
From the tool's definition Tool name contains 'check' and description states it 'Check[s] Google Chat external messaging restrictions' and 'Controls who users can message' — purely observational/audit function that retrieves policy settings without modification or side effects.
Attacks that exploit this kind of access
Check Google Chat external messaging restrictions. Controls who users can message outside the organization. It is categorised as a Read tool in the Google Workspace Compliance Audit Tool MCP Server, which means it retrieves data without modifying state.
Register the Google Workspace Compliance Audit Tool MCP server in PolicyLayer and add a rule for check_chat_external_restrictions: 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 Compliance Audit Tool. Nothing to install.
check_chat_external_restrictions 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 check_chat_external_restrictions 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 check_chat_external_restrictions. 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.
check_chat_external_restrictions is provided by the Google Workspace Compliance Audit Tool MCP server (sean-m-sweeney/googleworkspaceaudit). 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.
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