pg_capacity_planning
Analyze database growth trends and provide capacity planning forecasts. Note: Growth estimates are based on pg_stat_user_tables counters since last stats reset; accuracy depends on how long stats have been accumulating.
This record as markdown: /tools/io-github-neverinfamous-postgres-mcp/pg-capacity-planning.md
What pg_capacity_planning does on PostgreSQL MCP Server
AI agents call pg_capacity_planning to retrieve information from PostgreSQL MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why pg_capacity_planning is rated Low
This tool analyzes existing statistics and provides forecasts/reports. It reads from pg_stat_user_tables counters and produces growth estimates. No data is modified, deleted, or executed — it is purely a read/analytical operation. Severity is low as misuse would only expose database growth metrics.
From the tool's definition Analyze database growth trends and provide capacity planning forecasts
Attacks that exploit this kind of access
The rule that runs pg_capacity_planning 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_capacity_planning, this is the rule to start with:
pg_capacity_planning is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect PostgreSQL MCP Server, apply this rule, and every pg_capacity_planning call is checked against it from then on.
Questions about pg_capacity_planning
Analyze database growth trends and provide capacity planning forecasts. Note: Growth estimates are based on pg_stat_user_tables counters since last stats reset; accuracy depends on how long stats have been accumulating. It is categorised as a Read tool in the PostgreSQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PostgreSQL MCP Server MCP server in PolicyLayer and add a rule for pg_capacity_planning: 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_capacity_planning 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 pg_capacity_planning 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_capacity_planning. 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_capacity_planning 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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