Get a list of file formats supported by data.gov.hk
AI agents call get_supported_formats to retrieve information from Hong Kong Open Data MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple metadata retrieval operation that returns static information about supported formats. It has no side effects, does not modify data, execute code, or trigger external operations. It is a straightforward Read operation with minimal security risk.
From the tool's definition Tool retrieves a list of supported file formats from data.gov.hk. The description indicates a query operation that 'Get[s] a list' with no mention of modification, deletion, or execution capabilities.
Documented attack patterns abuse exactly the kind of access get_supported_formats gives an agent:
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 get_supported_formats:
{
"version": "1",
"default": "deny",
"tools": {
"get_supported_formats": {}
}
}get_supported_formats is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get a list of file formats supported by data.gov.hk. 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.
Register the Hong Kong Open Data MCP Server MCP server in PolicyLayer and add a rule for get_supported_formats: 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.
get_supported_formats is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_supported_formats 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.
Set action: deny in the PolicyLayer policy for get_supported_formats. 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.
get_supported_formats 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.
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.
Free to start. No card required.
8 Hong Kong Open Data MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.