List all nodes, their attributes and their relationships to other nodes in the neo4j database.
AI agents call get_neo4j_schema to retrieve information from MCP GeneLab Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves structural metadata about the Neo4j database schema—nodes, attributes, and relationships. It performs no creation, modification, deletion, or execution of arbitrary code. It is purely informational and read-only. The blast radius is minimal because the worst case is information disclosure about the database structure, which is non-destructive.
From the tool's definition Tool description states 'List all nodes, their attributes and their relationships to other nodes in the neo4j database.' The verb 'List' indicates data retrieval without modification.
Attacks that exploit this kind of access
List all nodes, their attributes and their relationships to other nodes in the neo4j database. It is categorised as a Read tool in the MCP GeneLab Server MCP Server, which means it retrieves data without modifying state.
Register the MCP GeneLab Server MCP server in PolicyLayer and add a rule for get_neo4j_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 MCP GeneLab Server. Nothing to install.
get_neo4j_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_neo4j_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_neo4j_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_neo4j_schema is provided by the MCP GeneLab Server MCP server (sbl-sdsc/mcp-genelab). 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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