search_emails
AI agents call search_emails to retrieve information from JMAP MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Searching emails is a read-only operation that retrieves or queries data without side effects. It does not create, modify, delete, or execute external operations. Low severity because search results are informational and unlikely to cause harm if misused by an AI agent, though confidence is moderately reduced due to the empty description.
From the tool's definition Tool name 'search_emails' indicates querying/filtering email data. The description is empty, but the name and context (sibling tools: get_email_content, get_mailboxes) suggest this retrieves email messages without modifying them.
Attacks that exploit this kind of access
search_emails. It is categorised as a Read tool in the JMAP MCP Server MCP Server, which means it retrieves data without modifying state.
Register the JMAP MCP Server MCP server in PolicyLayer and add a rule for search_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 JMAP MCP Server. Nothing to install.
search_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 search_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 search_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.
search_emails is provided by the JMAP MCP Server MCP server (jahfer/jmap-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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