Search the Open Knowledge Graphs (OKG) catalog for ontologies, vocabularies, and taxonomies. OKG indexes 1800+ semantic resources with metadata sourced from Wikidata. All data is CC0. Args: - query: Search term (required) - category: Optional thematic category filter - type: Optional resource typ...
AI agents call search_okg_resources 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.
This tool retrieves and queries semantic metadata from a catalog without side effects. The search operation is purely informational and read-only. No data is created, modified, deleted, or executed. The blast radius of misuse is minimal—an agent could only retrieve publicly available catalog information. Confidence is high due to clear read-only semantics and public data source.
From the tool's definition Tool description states it 'Search[es] the Open Knowledge Graphs (OKG) catalog' with search query and optional filters. No modification, deletion, execution, or financial operations described. Data sourced from publicly available, CC0-licensed resources.
Risk signalsBulk/mass operation — affects multiple targets
Documented attack patterns abuse exactly the kind of access search_okg_resources gives an agent:
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 search_okg_resources:
{
"version": "1",
"default": "deny",
"tools": {
"search_okg_resources": {}
}
} search_okg_resources is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search the Open Knowledge Graphs (OKG) catalog for ontologies, vocabularies, and taxonomies. OKG indexes 1800+ semantic resources with metadata sourced from Wikidata. All data is CC0. Args: - query: Search term (required) - category: Optional thematic category filter - type: Optional resource type filter (. It is categorised as a Read tool in the Schema Gov It MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Schema Gov It MCP Server MCP server in PolicyLayer and add a rule for search_okg_resources: 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.
search_okg_resources 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 search_okg_resources 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 search_okg_resources. 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.
search_okg_resources 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.
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.