Postgres MCP vs Supabase MCP: Which to Use (2026)
It comes down to where your database lives. Use a Postgres MCP (Postgres MCP Pro is the best maintained one) with a read-only role for self-managed or non-Supabase Postgres. Use the Supabase MCP when your backend is Supabase — it manages the whole project, not just queries. They are not interchangeable. Below: the comparison table, the verdict for each, and the production-safety default.
Side by side
| Dimension | Postgres MCP | Supabase MCP |
|---|---|---|
| Scope | The database only | The whole Supabase project |
| Default mode | Read-only (recommended) | Project-scoped |
| Queries | Yes — SELECT + introspection | Yes |
| Schema migrations | Via Postgres MCP Pro (opt-in) | Yes — first-class |
| Row-level security | Honors DB roles | RLS-aware, can manage policies |
| Edge functions / auth | No | Yes |
| Works with any Postgres | Yes — self-managed or cloud | Supabase projects only |
| Performance tuning | Yes (Postgres MCP Pro) | Limited |
The verdict
Postgres MCP
Use it when your Postgres is self-managed or on any cloud that is not Supabase, and you want database access with a read-only-first posture. Postgres MCP Pro adds index recommendations, EXPLAIN-based performance analysis, and controlled writes — the right tool for tuning and ad-hoc querying against a database you operate yourself.
Skip it if your database lives on Supabase; you would be giving up the platform features (RLS management, edge functions, auth) the Supabase MCP exposes.
Supabase MCP
Use it when your backend is Supabase. It manages the whole project, not just queries: schema migrations, row-level-security policies, edge function deployment, auth, and storage — all from one server. For a Supabase-backed app, it is the cleanest single tool.
Skip it for Postgres databases that are not on Supabase; it is project-scoped and does not connect to arbitrary Postgres instances.
Read-only first, regardless of which you pick
Frequently asked questions
Postgres MCP or Supabase MCP — which should I use?
It comes down to where your database lives. If your Postgres is self-managed or on a non-Supabase cloud, use a Postgres MCP (Postgres MCP Pro is the best maintained one) with a read-only role. If your backend is Supabase, use the Supabase MCP — it manages the whole project (schema, RLS, edge functions, auth), not just the database. They are not interchangeable: the Supabase MCP only connects to Supabase projects.
Is the Supabase MCP just a Postgres MCP with extras?
Effectively, yes — but the extras are substantial. Both can query and introspect. The Supabase MCP adds project-level control: schema migrations, row-level-security policy management, edge function deployment, auth, and storage. If you only need to read and query a database, a plain Postgres MCP is simpler; if you manage a Supabase project end to end, the Supabase MCP saves you switching tools.
Which is safer to give an AI agent?
Both are safe when scoped correctly. The Postgres MCP is easiest to lock down to read-only via a SELECT-only database role. The Supabase MCP is project-scoped and RLS-aware, so it respects the policies you already enforce. In either case, do not hand the agent broad write scope by default — keep migrations and writes behind a reviewed path.
Should I use the archived official Postgres MCP?
No. The original @modelcontextprotocol/server-postgres reference is archived. For self-managed Postgres use Postgres MCP Pro; for Supabase use the Supabase MCP; for Neon use the Neon MCP. Do not start a new project on the archived reference server.
Next steps
See the full ranked guide to Postgres MCPs, or browse the Databases category.
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