list_pack_categories

SERVERA3plus SOURCEa3plus-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/a3plus-mcp/list-pack-categories.md

WHAT IT DOES

What list_pack_categories does on A3plus

AI agents call list_pack_categories to retrieve information from A3plus without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_pack_categories is rated Low

Even though list_pack_categories only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_pack_categories safely

PolicyLayer is an MCP gateway: it sits between your AI agents and A3plus, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_pack_categories, this is the rule to start with:

list_pack_categories Allowed

list_pack_categories is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect A3plus, apply this rule, and every list_pack_categories call is checked against it from then on.

FAQ

Questions about list_pack_categories

What does the list_pack_categories tool do? +

List the fixed pack-category taxonomy — each { id, label, labelZh, group }. Use an id to filter list_packs by category, or to help the user pick a design style by industry (e.g. gambling → casino/slots/poker). It is categorised as a Read tool in the A3plus MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_pack_categories? +

Register the A3plus MCP server in PolicyLayer and add a rule for list_pack_categories: 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 A3plus. Nothing to install.

What risk level is list_pack_categories? +

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

Can I rate-limit list_pack_categories? +

Yes. Add a rate_limit block to the list_pack_categories 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_pack_categories completely? +

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

list_pack_categories is provided by the A3plus MCP server (a3plus-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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