Get messages from teachers and school administration. Returns message list with sender, subject, date, and read status.
AI agents call get_messages to retrieve information from School MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves existing messages without creating, modifying, deleting, or executing actions. It is a straightforward data query operation that returns read-only metadata about messages. The only side effect is reading the message status, which does not alter the underlying data.
From the tool's definition Tool name 'get_messages' and description 'Get messages from teachers and school administration. Returns message list with sender, subject, date, and read status' indicate a retrieval operation with no modification capability.
Attacks that exploit this kind of access
Get messages from teachers and school administration. Returns message list with sender, subject, date, and read status. It is categorised as a Read tool in the School MCP MCP Server, which means it retrieves data without modifying state.
Register the School MCP server in PolicyLayer and add a rule for get_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 School MCP. Nothing to install.
get_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_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_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_messages is provided by the School MCP server (shengdynasty/school-mcp). 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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