introspect_schema
AI agents call introspect_schema to retrieve information from Neo4j Knowledge Graph without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Schema introspection is a read-only operation that queries metadata about database structure. While the description is empty (lowering confidence slightly), the name and context of sibling tools (which handle write/delete operations separately) indicate this tool retrieves information about the graph schema without side effects. No data is created, modified, or deleted—only structural information is queried.
From the tool's definition Tool name 'introspect_schema' indicates inspection/querying of database schema structure; sibling tools show this server supports create, update, delete, search operations, and introspect_schema logically retrieves schema metadata without modifying it.
Attacks that exploit this kind of access
introspect_schema. It is categorised as a Read tool in the Neo4j Knowledge Graph MCP Server, which means it retrieves data without modifying state.
Register the Neo4j Knowledge Graph MCP server in PolicyLayer and add a rule for introspect_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 Neo4j Knowledge Graph. Nothing to install.
introspect_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 introspect_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 introspect_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.
introspect_schema is provided by the Neo4j Knowledge Graph MCP server (mjftw/mcp_neo4j_knowledge_graph). 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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