Wait for new messages in a room using long-polling. This tool will block until new messages are available or the timeout is reached. Returns immediately if new messages are already available since the last check.
AI agents call agent_communication_wait_for_messages to retrieve information from Agent Communication MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves/monitors messages via long-polling without creating, modifying, or deleting any data. It is a passive read operation that blocks until new messages arrive or a timeout occurs, making it a pure Read category tool with low severity.
From the tool's definition Wait for new messages in a room using long-polling... Returns immediately if new messages are already available since the last check.
Attacks that exploit this kind of access
Wait for new messages in a room using long-polling. This tool will block until new messages are available or the timeout is reached. Returns immediately if new messages are already available since the last check. It is categorised as a Read tool in the Agent Communication MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Agent Communication MCP Server MCP server in PolicyLayer and add a rule for agent_communication_wait_for_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 Agent Communication MCP Server. Nothing to install.
agent_communication_wait_for_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 agent_communication_wait_for_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 agent_communication_wait_for_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.
agent_communication_wait_for_messages is provided by the Agent Communication MCP Server MCP server (mkxultra/agent-communication-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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