read_pg_buffercache_relations

What read_pg_buffercache_relations does on Mcpg

AI agents call read_pg_buffercache_relations 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 read_pg_buffercache_relations is rated Low

This tool retrieves diagnostic information about PostgreSQL's buffer cache (an internal memory structure tracking page access). No side effects are described or implied. The empty description reduces confidence slightly, but the naming convention strongly suggests a read-only operation that queries system state. Buffer cache information is diagnostic metadata, not sensitive user data, keeping severity low.

From the tool's definition Tool name 'read_pg_buffercache_relations' indicates reading buffer cache relation metadata. The 'read_' prefix and '_relations' suffix suggest querying PostgreSQL's internal buffer cache state without modification.

The rule that runs read_pg_buffercache_relations 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 read_pg_buffercache_relations, this is the rule to start with:

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

Questions about read_pg_buffercache_relations