list_master_tags

List master tags (card types) available in a Huly card space. Master tags define the type/schema of cards that can be created in a space.

SERVERHuly SOURCEdugynoo/huly-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/dugynoo-huly-mcp/list-master-tags.md

WHAT IT DOES

What list_master_tags does on Huly

AI agents call list_master_tags to retrieve information from Huly 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_master_tags is rated Low

This tool retrieves metadata about available card types/schemas in a Huly card space. It is a read-only query operation that does not create, modify, delete, or execute any actions. The blast radius of misuse is minimal—an agent could only over-query or enumerate card types, which poses negligible risk.

From the tool's definition Tool name 'list_master_tags' and description 'List master tags (card types) available in a Huly card space' indicate a retrieval operation with no side effects. The verb 'list' and phrase 'available in' confirm it queries existing data without modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_master_tags safely

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

list_master_tags Allowed

list_master_tags 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_master_tags": {}
  }
}

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

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

FAQ

Questions about list_master_tags

What does the list_master_tags tool do? +

List master tags (card types) available in a Huly card space. Master tags define the type/schema of cards that can be created in a space. It is categorised as a Read tool in the Huly MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_master_tags? +

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

What risk level is list_master_tags? +

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

Can I rate-limit list_master_tags? +

Yes. Add a rate_limit block to the list_master_tags 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_master_tags completely? +

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

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

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