pg_citext_schema_advisor
Analyze a specific table and recommend which columns should use citext. Provides schema design recommendations based on column names and existing data patterns. Requires the
This record as markdown: /tools/io-github-neverinfamous-postgres-mcp/pg-citext-schema-advisor.md
What pg_citext_schema_advisor does on PostgreSQL MCP Server
AI agents call pg_citext_schema_advisor 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_citext_schema_advisor is rated Low
This tool retrieves and analyzes existing table schema and data patterns to provide design guidance. It performs no mutations, deletions, or external operations. The worst-case misuse (recommending inappropriate column types) has minimal blast radius since recommendations are non-binding and reversible if followed. Classified as Read with low severity.
From the tool's definition Tool description states it "Analyze[s] a specific table and recommend[s]" — purely advisory and read-only operations. No modification, deletion, code execution, or financial transactions occur.
Attacks that exploit this kind of access
The rule that runs pg_citext_schema_advisor 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_citext_schema_advisor, this is the rule to start with:
pg_citext_schema_advisor 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_citext_schema_advisor call is checked against it from then on.
Questions about pg_citext_schema_advisor
Analyze a specific table and recommend which columns should use citext. Provides schema design recommendations based on column names and existing data patterns. Requires the. 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_citext_schema_advisor: 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_citext_schema_advisor 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_citext_schema_advisor 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_citext_schema_advisor. 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_citext_schema_advisor 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.
More on PostgreSQL MCP Server, and thousands of servers like it.
This server
Across the catalogue