list_uc_tags

THE RISK

Low Risk

Why list_uc_tags needs a policy

This tool retrieves metadata about existing tags in Unity Catalog without creating, modifying, or deleting any data. It is a read-only enumeration operation with no side effects or blast radius if invoked by an AI agent.

From the tool's definition Tool name 'list_uc_tags' and description 'List available tags in Unity Catalog' indicate a query/retrieval operation with no modification or execution of external operations.

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

POLICY

How to control list_uc_tags

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

policy.json

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

list_uc_tags 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 Databricks MCP Server — 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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All 86 Databricks MCP Server tools →

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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_uc_tags

What does the list_uc_tags tool do? +

List available tags in Unity Catalog. It is categorised as a Read tool in the Databricks MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_uc_tags? +

Register the Databricks MCP Server MCP server in PolicyLayer and add a rule for list_uc_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 Databricks MCP Server. Nothing to install.

What risk level is list_uc_tags? +

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

Can I rate-limit list_uc_tags? +

Yes. Add a rate_limit block to the list_uc_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_uc_tags completely? +

Set action: deny in the PolicyLayer policy for list_uc_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_uc_tags? +

list_uc_tags is provided by the Databricks MCP Server MCP server (pulkitxchadha/awesome-databricks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Databricks MCP Server tool call.

Start from Databricks MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →