pt_list_channels

THE RISK

Low Risk

Why pt_list_channels needs a policy

This tool retrieves information about channels (or the authenticated user context) without creating, modifying, or deleting any data. It performs a simple query/list operation, which is characteristic of a Read category tool. The severity is low because it only exposes information that is already accessible to an authenticated user.

From the tool's definition Tool name is 'pt_list_channels' and description states 'List the authenticated user'. The term 'List' indicates data retrieval without modification.

Documented attack patterns abuse exactly the kind of access pt_list_channels gives an agent:

POLICY

How to control pt_list_channels

PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for pt_list_channels:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "pt_list_channels": {}
  }
}

pt_list_channels is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Crow — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
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FAQ

Questions about pt_list_channels

What does the pt_list_channels tool do? +

List the authenticated user. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on pt_list_channels? +

Register the Crow MCP server in PolicyLayer and add a rule for pt_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 Crow. Nothing to install.

What risk level is pt_list_channels? +

pt_list_channels is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit pt_list_channels? +

Yes. Add a rate_limit block to the pt_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.

How do I block pt_list_channels completely? +

Set action: deny in the PolicyLayer policy for pt_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.

What MCP server provides pt_list_channels? +

pt_list_channels is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Crow tool call.

Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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