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Compare servers	Postgres MCP
Purpose	Read-only-by-default MCP server for PostgreSQL. Query, introspect schemas, explain plans, health checks.
Authentication (maintainer declared)	Unknown
Public launch command	npx -y @yawlabs/postgres-mcp@latest
Configuration source	Public install instructions
Observed tools	Unknown
Last complete tool check	Unknown
License	MIT
	Open setup

A complete tool check lists tools; it does not exercise them or certify security.