List all channels in a Microsoft Team. Use teams_list_teams first to get the team ID.
AI agents call teams_list_channels to retrieve information from Microsoft Teams without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns a list of channels within a team. It is a pure read operation that retrieves data without modifying, executing, or deleting anything. The blast radius of misuse is minimal: an attacker gains visibility into team structure but cannot alter channels, send messages, or perform destructive actions. Confidence is high because the intent is unambiguous.
From the tool's definition Tool name contains 'list' and description states 'List all channels' — a retrieval operation with no side effects. No creation, modification, deletion, or execution capability.
Attacks that exploit this kind of access
List all channels in a Microsoft Team. Use teams_list_teams first to get the team ID. It is categorised as a Read tool in the Microsoft Teams MCP Server, which means it retrieves data without modifying state.
Register the Microsoft Teams MCP server in PolicyLayer and add a rule for teams_list_channels: 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 Microsoft Teams. Nothing to install.
teams_list_channels 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 teams_list_channels 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 teams_list_channels. 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.
teams_list_channels is provided by the Microsoft Teams MCP server (microsoft-teams-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
teams_list_channels is one line of Microsoft Teams's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →