This is the best way to get the graph schema of the ontolocy cyber knowledge graph.
AI agents call get_schema to retrieve information from Ontolocy 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 read-only retrieval of database schema information without modifying, executing code, deleting data, or moving money. It has minimal blast radius as schema information is typically non-sensitive metadata used to understand data structure for legitimate queries.
From the tool's definition Tool name 'get_schema' and description 'get the graph schema' indicate it retrieves structural metadata about the Neo4j graph database.
Attacks that exploit this kind of access
This is the best way to get the graph schema of the ontolocy cyber knowledge graph. It is categorised as a Read tool in the Ontolocy MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Ontolocy MCP Server MCP server in PolicyLayer and add a rule for get_schema: 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 Ontolocy MCP Server. Nothing to install.
get_schema 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_schema 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_schema. 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_schema is provided by the Ontolocy MCP Server MCP server (ontolocy/ontolocy-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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