postgres-mcp
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TDQS
Scored across 4 tools
Each tool has a clearly distinct purpose: query runs ad-hoc read-only SQL, list_tables enumerates tables, describe_table returns column metadata, and relationships exposes foreign keys. There is no overlap in their intended use, so an agent can easily select the right tool.
Three tools follow a verb_noun pattern (list_tables, describe_table) or a clear verb (query), while relationships is a noun. This is a minor deviation, but all names use snake_case and remain readable and predictable overall.
Four tools is well-scoped for a read-only Postgres introspection server. Each tool serves a distinct, necessary function (querying, listing, describing, and mapping relationships) without redundancy or bloat.
The toolset covers the core read-only workflows: running queries, listing base tables, describing columns, and discovering foreign keys. However, it lacks tools for listing views or schemas (list_tables only covers public base tables), which are minor gaps for full schema exploration.