Low Risk

list_flags

List feature flags in an Unleash project, with optional pagination and sort order. By default returns active flags only; set archived=true to list archived flags instead (active and archived flags are disjoint result sets in Unleash and cannot be combined in one response). Use this to discover fl...

Part of the Unleash server.

list_flags is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call list_flags to retrieve information from Unleash without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though list_flags only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

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

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These attack patterns abuse exactly the kind of access list_flags gives an agent. Each links to the full case and the policy that stops it:

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Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so list_flags only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the list_flags tool do? +

List feature flags in an Unleash project, with optional pagination and sort order. By default returns active flags only; set archived=true to list archived flags instead (active and archived flags are disjoint result sets in Unleash and cannot be combined in one response). Use this to discover flags before creating new ones, audit flag inventory for cleanup (call twice — once for active, once for archived), or scope a workflow to a specific project. Returns name, type, description, archived status, and URL for each flag.. It is categorised as a Read tool in the Unleash MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_flags? +

Register the Unleash MCP server in PolicyLayer and add a rule for list_flags: 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 Unleash. Nothing to install.

What risk level is list_flags? +

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

Can I rate-limit list_flags? +

Yes. Add a rate_limit block to the list_flags 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_flags completely? +

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

list_flags is provided by the Unleash MCP server (Unleash/unleash-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Unleash tool call.

Deterministic rules across all 13 Unleash tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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