Identify indexes with significant bloat above a threshold percentage.
AI agents call PostgreSQL_analyze_index_bloat to retrieve information from Postgres without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs read-only analysis of PostgreSQL index metadata to detect bloat levels. It retrieves status information about existing indexes against a threshold, similar to a monitoring or reporting query. There is no indication of modifications, deletions, or execution of arbitrary commands. Misuse by an AI agent would result in information disclosure only, not data loss or system compromise.
From the tool's definition Tool name includes 'analyze' and description states 'Identify indexes' — this queries and retrieves information about index bloat without modifying or deleting data. The action is purely diagnostic/observational.
Documented attack patterns abuse exactly the kind of access PostgreSQL_analyze_index_bloat gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Postgres, and nothing reaches the server without passing your rules. This is the rule we recommend for PostgreSQL_analyze_index_bloat:
{
"version": "1",
"default": "deny",
"tools": {
"PostgreSQL_analyze_index_bloat": {}
}
}PostgreSQL_analyze_index_bloat is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Identify indexes with significant bloat above a threshold percentage. It is categorised as a Read tool in the Postgres MCP Server, which means it retrieves data without modifying state.
Register the Postgres MCP server in PolicyLayer and add a rule for PostgreSQL_analyze_index_bloat: 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 Postgres. Nothing to install.
PostgreSQL_analyze_index_bloat 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 PostgreSQL_analyze_index_bloat 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 PostgreSQL_analyze_index_bloat. 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.
PostgreSQL_analyze_index_bloat is provided by the Postgres MCP server (mukul975/postgres-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Postgres, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
239 Postgres tools catalogued and risk-classified — across an index of 43,000+ MCP servers.