Retrieves historical private messages between two users within a specified time range.The time range is defined by startTime (newest) and endTime (oldest),with endTime must be earlier than startTime.
AI agents call get_private_messages to retrieve information from RongCloud MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves (reads) existing message data within a time range without creating, modifying, deleting, or executing any operations. It has minimal blast radius even if invoked by an AI agent with incorrect parameters, as it only returns data that already exists. The worst outcome is exposure of message history, which is a read-level confidentiality concern, not a data integrity or operational risk.
From the tool's definition Tool name 'get_private_messages' and description states it 'Retrieves historical private messages' — a query operation with no side effects.
Attacks that exploit this kind of access
Retrieves historical private messages between two users within a specified time range.The time range is defined by startTime (newest) and endTime (oldest),with endTime must be earlier than startTime. It is categorised as a Read tool in the RongCloud MCP Server MCP Server, which means it retrieves data without modifying state.
Register the RongCloud MCP Server MCP server in PolicyLayer and add a rule for get_private_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 RongCloud MCP Server. Nothing to install.
get_private_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 get_private_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 get_private_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.
get_private_messages is provided by the RongCloud MCP Server MCP server (rongcloud/rongcloud-server-mcp-python). 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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