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Database

Supabase vs Postgres: Which MCP should you use?

🟢

Supabase

Open-source Firebase alternative on Postgres

VS
🐘

Postgres

The world's most advanced open-source relational DB

TL;DR

Supabase is managed Postgres plus auth, storage, edge functions, and realtime. Plain Postgres gives you the same battle-tested engine without the batteries — you run it yourself. Supabase wins for speed-to-product; Postgres wins for full control and cost at scale.

Supabase: 4 winsPostgres: 2 wins2 ties
🟢

Pick Supabase

Pick Supabase when you want a managed Postgres with auth, storage, and realtime ready in minutes.

🐘

Pick Postgres

Pick Postgres when you need self-hosting, strict compliance control, or cheaper unit economics at scale.

Feature-by-feature comparison

Feature🟢Supabase🐘PostgresWinner
Hosting model
Managed SaaS (self-host available)
You run it (any cloud or on-prem)
 Tie
Built-in auth
Yes — GoTrue + RLS
No — bring your own
A
Realtime subscriptions
Yes — native
LISTEN/NOTIFY (DIY)
A
SQL dialect
Postgres 15/16
Postgres (latest)
 Tie
Row-Level Security
Default pattern
Supported, manual setup
A
Pricing at scale
Predictable tiers, egress billed
Only infra cost
B
Vendor lock-in
Low — standard Postgres
None
B
Time to first query
~2 minutes
~20 minutes (Docker)
A

Hosting model

Tie

Supabase

Managed SaaS (self-host available)

Postgres

You run it (any cloud or on-prem)

Built-in auth

A

Supabase

Yes — GoTrue + RLS

Postgres

No — bring your own

Realtime subscriptions

A

Supabase

Yes — native

Postgres

LISTEN/NOTIFY (DIY)

SQL dialect

Tie

Supabase

Postgres 15/16

Postgres

Postgres (latest)

Row-Level Security

A

Supabase

Default pattern

Postgres

Supported, manual setup

Pricing at scale

B

Supabase

Predictable tiers, egress billed

Postgres

Only infra cost

Vendor lock-in

B

Supabase

Low — standard Postgres

Postgres

None

Time to first query

A

Supabase

~2 minutes

Postgres

~20 minutes (Docker)

🟢

Best for

Supabase

  • Built-in auth: Yes — GoTrue + RLS
  • Realtime subscriptions: Yes — native
  • Row-Level Security: Default pattern
  • Time to first query: ~2 minutes
🐘

Best for

Postgres

  • Pricing at scale: Only infra cost
  • Vendor lock-in: None

Migration path

Supabase is standard Postgres, so pg_dump/pg_restore works both ways. To move off Supabase: pg_dump --no-owner --no-acl, then restore to your new Postgres; rewrite RLS policies if you replace Supabase auth. To move onto Supabase: dump your DB, supabase db push, then add RLS policies for user-scoped tables.

Frequently asked questions

What is the main difference between Supabase and Postgres?

Supabase is managed Postgres plus auth, storage, edge functions, and realtime. Plain Postgres gives you the same battle-tested engine without the batteries — you run it yourself. Supabase wins for speed-to-product; Postgres wins for full control and cost at scale. In short: Supabase — Open-source Firebase alternative on Postgres. Postgres — The world's most advanced open-source relational DB.

When should I pick Supabase over Postgres?

Pick Supabase when you want a managed Postgres with auth, storage, and realtime ready in minutes.

When should I pick Postgres over Supabase?

Pick Postgres when you need self-hosting, strict compliance control, or cheaper unit economics at scale.

Can I migrate from one to the other?

Supabase is standard Postgres, so pg_dump/pg_restore works both ways. To move off Supabase: pg_dump --no-owner --no-acl, then restore to your new Postgres; rewrite RLS policies if you replace Supabase auth. To move onto Supabase: dump your DB, supabase db push, then add RLS policies for user-scoped tables.

Do Supabase and Postgres both work with MCP-compatible AI agents?

Yes. Both have MCP servers installable via MCPizy (mcpizy install supabase and mcpizy install postgres). They work identically across Claude Code, Claude Desktop, Cursor, Windsurf, and any other MCP-compatible client. You can install both side by side and route queries in your agent's prompt.

More Database comparisons

🟢VS🔥

Supabase vs Firebase

Both are BaaS offerings. Supabase is Postgres-based (relational, SQL, open-source), Firebase is Firestore-based (NoSQL, proprietary, Google Cloud). Supabase wins if you want SQL, lower lock-in, and predictable pricing. Firebase wins for mobile-first apps tied to Google's ecosystem.

🐘VS🐬

Postgres vs MySQL

Both are mature open-source relational databases. Postgres has richer SQL (CTEs, window functions, JSON, arrays, extensions), stricter standards compliance, and better for complex analytics. MySQL is simpler, often faster on basic read-heavy workloads, and dominates WordPress/PHP ecosystems.

🍃VS🐘

MongoDB vs Postgres

MongoDB is a document database — flexible schemas, built-in sharding, great for unstructured data and rapid prototyping. Postgres is relational but its JSONB type covers most 'flexible schema' use-cases while also giving you joins, transactions, and stricter integrity.

Install both with MCPizy

Not sure? Run both side by side — swap between them in your AI agent with a single config line.

$mcpizy install supabase && mcpizy install postgres
🟢Install Supabase🐘Install Postgres
Free to install. Swap between them in your agent config.