describe_graph

What describe_graph does on Mcpg

AI agents call describe_graph to retrieve information from Mcpg without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Why describe_graph is rated Low

The 'describe_' prefix conventionally indicates introspection or information retrieval operations that examine database objects (schemas, tables, graphs) and return their properties. No indication of modification, deletion, or execution of arbitrary code. Classified as Read due to the retrieval nature implied by the name, though low confidence reflects the missing description.

From the tool's definition Tool name 'describe_graph' suggests retrieval of graph structure/metadata. Description is empty, limiting certainty. On a PostgreSQL MCP server, describe-style operations typically query and return schema or object information without modification.

The rule that runs describe_graph safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcpg, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For describe_graph, this is the rule to start with:

{
  "version": "1",
  "default": "deny",
  "tools": {
    "describe_graph": {}
  }
}

Questions about describe_graph