Topologically sort tables by FK dependencies. Returns order safe for
AI agents call schema_topo_order to retrieve information from DBJavaGenix without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool analyzes database schema structure to determine table ordering based on foreign key relationships. It retrieves and processes metadata to produce a sorted result—a classic Read operation. There are no side effects, no code execution, no data modification, and no irreversible actions. The severity is low because misuse would only return incorrect ordering information, not expose sensitive data or cause harm.
From the tool's definition Tool name 'schema_topo_order' and description 'Topologically sort tables by FK dependencies. Returns order safe for' indicate a query/analysis operation that computes and returns sorted table dependency information without modifying data or executing…
Documented attack patterns abuse exactly the kind of access schema_topo_order gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and DBJavaGenix, and nothing reaches the server without passing your rules. This is the rule we recommend for schema_topo_order:
{
"version": "1",
"default": "deny",
"tools": {
"schema_topo_order": {}
}
}schema_topo_order is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Topologically sort tables by FK dependencies. Returns order safe for. It is categorised as a Read tool in the DBJavaGenix MCP Server, which means it retrieves data without modifying state.
Register the DBJavaGenix MCP server in PolicyLayer and add a rule for schema_topo_order: 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 DBJavaGenix. Nothing to install.
schema_topo_order 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 schema_topo_order 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 schema_topo_order. 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.
schema_topo_order is provided by the DBJavaGenix MCP server (zhaoxingpeng/dbjavagenix). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 33 DBJavaGenix tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
33 DBJavaGenix tools catalogued and risk-classified — across an index of 42,500+ MCP servers.