email_search_messages
Search email messages by criteria (from, to, subject, body, date range, read/unread status)
This record as markdown: /tools/io-github-alifanov-scopegate/email-search-messages.md
What email_search_messages does on ScopeGate
AI agents call email_search_messages to retrieve information from ScopeGate without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why email_search_messages is rated Low
The tool retrieves and filters existing email messages based on search parameters. While it accesses potentially sensitive email content (Gmail integration via ScopeGate), it performs no write, execute, or destructive operations. Severity is elevated to medium due to the sensitive nature of email data that could be accessed, but remains in the Read category per the functional behavior.
From the tool's definition Tool name 'email_search_messages' and description 'Search email messages by criteria (from, to, subject, body, date range, read/unread status)' indicate retrieval/query of email data without modification or deletion.
Attacks that exploit this kind of access
The rule that runs email_search_messages safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ScopeGate, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For email_search_messages, this is the rule to start with:
email_search_messages is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect ScopeGate, apply this rule, and every email_search_messages call is checked against it from then on.
Questions about email_search_messages
Search email messages by criteria (from, to, subject, body, date range, read/unread status). It is categorised as a Read tool in the ScopeGate MCP Server, which means it retrieves data without modifying state.
Register the ScopeGate MCP server in PolicyLayer and add a rule for email_search_messages: 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 ScopeGate. Nothing to install.
email_search_messages 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 email_search_messages 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 email_search_messages. 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.
email_search_messages is provided by the ScopeGate MCP server (https://mcp.scopegate.cloud/{api_key}). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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