Low Risk

list_available_models

List models and capabilities for every available provider CLI (takes no arguments; complements per-provider list_models).

How to control list_available_models ↓

What list_available_models does on LLM CLI Gateway

AI agents call list_available_models to retrieve information from LLM CLI Gateway without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why list_available_models needs a policy

This is a straightforward information retrieval tool that lists models and their capabilities across multiple LLM provider CLIs. It performs no modifications, deletions, or external operations—purely a read operation. Blast radius is minimal; misuse would only expose what models are available, not cause data loss or unintended actions.

From the tool's definition Tool name 'list_available_models' and description 'List models and capabilities for every available provider CLI' indicate data retrieval with no side effects. Takes no arguments and only queries/displays available information.

Risk signalsBulk/mass operation — affects multiple targets

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

How to control list_available_models

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

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_available_models": {}
  }
}

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

  1. Create a free account and register LLM CLI Gateway — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about list_available_models

What does the list_available_models tool do? +

List models and capabilities for every available provider CLI (takes no arguments; complements per-provider list_models). It is categorised as a Read tool in the LLM CLI Gateway MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_available_models? +

Register the LLM CLI Gateway MCP server in PolicyLayer and add a rule for list_available_models: 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 LLM CLI Gateway. Nothing to install.

What risk level is list_available_models? +

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

Can I rate-limit list_available_models? +

Yes. Add a rate_limit block to the list_available_models 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_available_models completely? +

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

list_available_models is provided by the LLM CLI Gateway MCP server (llm-cli-gateway). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every LLM CLI Gateway tool call.

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

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46 LLM CLI Gateway tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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