// MCP TOOL REFERENCE

Low Risk

inspect_local_ontology

ServerSchema Gov It MCP Server
CategoryRead

WHAT IT DOES

What inspect_local_ontology does on Schema Gov It MCP Server

AI agents call inspect_local_ontology 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 inspect_local_ontology needs a policy

This tool retrieves and analyzes semantic metadata (RDF/OWL ontologies) from the Italian government data catalog without modifying data or executing external operations. It performs inspection and summarization only.

From the tool's definition Tool description explicitly states it 'Load and summarize' ontologies and vocabularies from various sources (filesystem, inline content, uploaded stores). All input options (file_path, content, upload_id) are for reading/loading data.

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

POLICY

How to control inspect_local_ontology

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 inspect_local_ontology:

policy.json

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

inspect_local_ontology 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 →

Free to start. No card required.

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

All 47 Schema Gov It MCP Server tools →

Read tools on other servers

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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 inspect_local_ontology

What does the inspect_local_ontology tool do? +

Load and summarize an RDF/OWL ontology from the server filesystem, inline content, or an uploaded HTTP store (TTL, OWL/RDF-XML, NT, JSON-LD, Graphol XML). Input (provide exactly one): - file_path: Absolute path on the MCP server filesystem. Use this only when the server process can really read that path (local stdio, same machine, or Docker with that directory mounted). - content + format: Raw RDF text sent inline. Works in remote HTTP mode too, but only for small payloads (max 1 MB). - upload_id: UUID returned by POST /upload. This is the preferred remote workflow when the ontology file is on the client machine instead of the server. Important for remote MCP servers: - Do not assume file_path points to the user. 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 inspect_local_ontology? +

Register the Schema Gov It MCP Server MCP server in PolicyLayer and add a rule for inspect_local_ontology: 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 inspect_local_ontology? +

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

Can I rate-limit inspect_local_ontology? +

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

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

inspect_local_ontology 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.