pg_reset_stats
Reset statistics counters (requires superuser).
This record as markdown: /tools/io-github-neverinfamous-postgres-mcp/pg-reset-stats.md
What pg_reset_stats does on PostgreSQL MCP Server
AI agents call pg_reset_stats to permanently remove resources in PostgreSQL MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why pg_reset_stats is rated Critical
Resetting statistics counters destroys accumulated performance and diagnostic data that cannot be recovered. This is an irreversible action (counters start fresh from zero) requiring superuser privileges, indicating significant system-level impact. Misuse by an AI agent could permanently eliminate historical metrics needed for performance analysis, troubleshooting, and capacity planning.
From the tool's definition 'Reset statistics counters' — resetting counters is an irreversible destructive operation that permanently clears accumulated statistical data
Risk signalsAdmin/system-level operation
Attacks that exploit this kind of access
The rule that runs pg_reset_stats safely
PolicyLayer is an MCP gateway: it sits between your AI agents and PostgreSQL MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pg_reset_stats, this is the rule to start with:
pg_reset_stats is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect PostgreSQL MCP Server, apply this rule, and every pg_reset_stats call is checked against it from then on.
Questions about pg_reset_stats
Reset statistics counters (requires superuser). It is categorised as a Destructive tool in the PostgreSQL MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for pg_reset_stats: 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 PostgreSQL MCP Server. Nothing to install.
pg_reset_stats is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the pg_reset_stats 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 pg_reset_stats. 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.
pg_reset_stats is provided by the PostgreSQL MCP Server MCP server (@neverinfamous/postgres-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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