list_profiles

THE RISK

Low Risk

Why list_profiles needs a policy

This tool retrieves and displays existing profile configuration data from the user's system without creating, modifying, or deleting any data. It is purely informational for observability and management purposes. The blast radius is minimal—exposing which profiles exist poses no direct operational risk.

From the tool's definition Tool name is 'list_profiles' and description explicitly states 'List saved ~/.claude.json profiles'. The verb 'list' and the action of retrieving profile information with no modification capability clearly indicates a read-only operation.

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

POLICY

How to control list_profiles

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

policy.json

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

list_profiles 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 Claude Code Toolkit — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

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.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_profiles

What does the list_profiles tool do? +

List saved ~/.claude.json profiles and the currently active one. Profiles let you switch between work/personal accounts or different orgs. It is categorised as a Read tool in the Claude Code Toolkit MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_profiles? +

Register the Claude Code Toolkit MCP server in PolicyLayer and add a rule for list_profiles: 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 Claude Code Toolkit. Nothing to install.

What risk level is list_profiles? +

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

Can I rate-limit list_profiles? +

Yes. Add a rate_limit block to the list_profiles 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 list_profiles completely? +

Set action: deny in the PolicyLayer policy for list_profiles. 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 list_profiles? +

list_profiles is provided by the Claude Code Toolkit MCP server (asifkibria/claude-code-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Claude Code Toolkit tool call.

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

CHECK YOUR STACK →