search_datasets_with_facets

THE RISK

Low Risk

Why search_datasets_with_facets needs a policy

This tool searches and filters public datasets using faceted search—a standard read-only querying mechanism. It retrieves data without modifying, deleting, or executing arbitrary code. The server provides access to official government open data, and all operations are data retrieval only. No side effects or destructive capabilities are evident.

From the tool's definition Tool name 'search_datasets_with_facets' indicates a search operation on public datasets. Server description confirms tools are for 'searching datasets, browsing categories, and retrieving detailed information' from Hong Kong's open data portal.

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

POLICY

How to control search_datasets_with_facets

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

policy.json

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

search_datasets_with_facets 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 Hong Kong Open Data 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

Related tools and policies

More Hong Kong Open Data MCP Server tools

Read get_category_details get_category_details Read get_dataset_details Get detailed information about a specific dataset Read get_datasets_by_format get_datasets_by_format Read get_supported_formats Get a list of file formats supported by data.gov.hk Read list_categories list_categories Read list_datasets Get a list of dataset IDs from data.gov.hk Read search_datasets search_datasets

All 8 Hong Kong Open Data MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 search_datasets_with_facets

What does the search_datasets_with_facets tool do? +

search_datasets_with_facets. It is categorised as a Read tool in the Hong Kong Open Data MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_datasets_with_facets? +

Register the Hong Kong Open Data MCP Server MCP server in PolicyLayer and add a rule for search_datasets_with_facets: 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 Hong Kong Open Data MCP Server. Nothing to install.

What risk level is search_datasets_with_facets? +

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

Can I rate-limit search_datasets_with_facets? +

Yes. Add a rate_limit block to the search_datasets_with_facets 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 search_datasets_with_facets completely? +

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

search_datasets_with_facets is provided by the Hong Kong Open Data MCP Server MCP server (mcp-open-data-hk/mcp-open-data-hk). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Hong Kong Open Data MCP Server tool call.

Start from Hong Kong Open Data 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 →