search_messages_product
AI agents call search_messages_product to retrieve information from MCP Agent Mail without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool searches or queries messages within the product's message history—a read-only retrieval operation with no side effects. The empty description lowers confidence slightly, but the tool name and server's documented 'searchable history' feature make the intent clear. Low severity because it only accesses existing message data without modifying or executing anything.
From the tool's definition Tool name 'search_messages_product' and server context describe a message coordination and history system. The 'search' prefix and lack of write/execute/delete language indicate a query operation.
Attacks that exploit this kind of access
search_messages_product. It is categorised as a Read tool in the MCP Agent Mail MCP Server, which means it retrieves data without modifying state.
Register the MCP Agent Mail MCP server in PolicyLayer and add a rule for search_messages_product: 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 MCP Agent Mail. Nothing to install.
search_messages_product 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_messages_product 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_messages_product. 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_messages_product is provided by the MCP Agent Mail MCP server (omelchmichael/mcp_agent_mail). 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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