List the TalkToPlanB chat rooms (group chats and direct messages) the account belongs to. Returns room ids you can use with read_messages and send_message.
AI agents call list_rooms to retrieve information from Talktoplanb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata (room identifiers) from the messaging system. It performs a query operation that returns data without creating, modifying, deleting, or executing any actions. The blast radius of misuse is minimal—an attacker could discover which chat rooms an account participates in, but cannot read messages, send messages, or perform destructive actions. Classification as Read is appropriate.
From the tool's definition Tool description states it 'List[s] the TalkToPlanB chat rooms' and 'Returns room ids' — purely a listing/retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List the TalkToPlanB chat rooms (group chats and direct messages) the account belongs to. Returns room ids you can use with read_messages and send_message. It is categorised as a Read tool in the Talktoplanb MCP Server, which means it retrieves data without modifying state.
Register the Talktoplanb MCP server in PolicyLayer and add a rule for list_rooms: 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 Talktoplanb. Nothing to install.
list_rooms 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 list_rooms 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 list_rooms. 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.
list_rooms is provided by the Talktoplanb MCP server (talktoplanb-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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