Search Gmail inbox. Use Gmail search syntax like
AI agents call search_gmail to retrieve information from Revenue Engine MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves email data matching search criteria but does not create, modify, delete, or execute any actions. It is a pure read operation with minimal blast radius if misused—worst case an agent searches for sensitive information but cannot act on it without other tools.
From the tool's definition Tool name is 'search_gmail' and description states 'Search Gmail inbox' — a query operation with no modification capability. Returns search results without side effects.
Attacks that exploit this kind of access
Search Gmail inbox. Use Gmail search syntax like. It is categorised as a Read tool in the Revenue Engine MCP MCP Server, which means it retrieves data without modifying state.
Register the Revenue Engine MCP server in PolicyLayer and add a rule for search_gmail: 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 Revenue Engine MCP. Nothing to install.
search_gmail 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 search_gmail 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 search_gmail. 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.
search_gmail is provided by the Revenue Engine MCP server (promptishoperations/mcpspec). 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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