list_properties

List ObjectProperty and DatatypeProperty defined in an ontology or globally. Args: - ontologyUri: (optional) URI of the ontology to filter by - propertyType: (optional)

ServerSchema Gov It MCP Server
CategoryRead

How to control list_properties ↓

WHAT IT DOES

What list_properties does on Schema Gov It MCP Server

AI agents call list_properties to retrieve information from Schema Gov It MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

THE RISK

Low Risk

Why list_properties needs a policy

This tool performs a straightforward enumeration/query of existing properties within ontologies—a read-only operation. It retrieves semantic metadata from the Italian government data catalog without any capability to create, modify, execute code, delete data, or move funds. The blast radius of misuse is minimal, as an agent could only retrieve information already in the catalog, not cause harm or unwanted changes.

From the tool's definition Tool name 'list_properties' and description 'List ObjectProperty and DatatypeProperty defined in an ontology or globally' indicate data retrieval with no side effects.

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

POLICY

How to control list_properties

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

policy.json

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

list_properties 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 Schema Gov It 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 →

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EXPLORE

Related tools and policies

More Schema Gov It MCP Server tools

Execute query_external_endpoint Execute a SPARQL query against any public HTTPS SPARQL endpoint. Args: - endpointUrl: URL Execute query_local_ontology Execute a SPARQL SELECT query against an ontology available on the server filesystem or th Execute query_sparql Execute a RAW SPARQL query against schema.gov.it. Args: - query: The SPARQL query to exec Execute query_uploaded_store Execute a SPARQL SELECT query against a temporary ontology store created via HTTP upload. Write get_upload_instructions Returns the exact curl command to upload a local RDF file to this MCP server and get back Read explore_dataset Get details of a specific Dataset including metadata and distributions. Use this for targ Read navigate_skos_hierarchy Navigate a SKOS hierarchy upward and/or downward from a concept. Args: - uri: Concept URI Read suggest_improvements Analyze the ontology for structural issues. Args: - limit: Maximum issues per category (d

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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_properties

What does the list_properties tool do? +

List ObjectProperty and DatatypeProperty defined in an ontology or globally. Args: - ontologyUri: (optional) URI of the ontology to filter by - propertyType: (optional). It is categorised as a Read tool in the Schema Gov It MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_properties? +

Register the Schema Gov It MCP Server MCP server in PolicyLayer and add a rule for list_properties: 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 Schema Gov It MCP Server. Nothing to install.

What risk level is list_properties? +

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

Can I rate-limit list_properties? +

Yes. Add a rate_limit block to the list_properties 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_properties completely? +

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

list_properties is provided by the Schema Gov It MCP Server MCP server (italia/dati-semantic-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Schema Gov It MCP Server tool call.

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

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47 Schema Gov It MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.