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Supabase vs PlanetScale: Which MCP should you use?

🟢

Supabase

Open-source Firebase alternative on Postgres

VS
🪐

PlanetScale

Serverless MySQL platform with branching

TL;DR

Supabase is a Postgres-based BaaS with auth, storage, and realtime. PlanetScale is serverless MySQL (Vitess) with branching, schema workflows, and massive horizontal scale. Supabase gives you a full backend; PlanetScale gives you a bulletproof MySQL database.

Supabase: 4 winsPlanetScale: 3 wins1 tie
🟢

Pick Supabase

Pick Supabase when you need a full backend (DB + auth + storage + realtime + functions).

🪐

Pick PlanetScale

Pick PlanetScale when you want serverless MySQL with branching, zero downtime, and Vitess scale.

Feature-by-feature comparison

Database engine

Tie

Supabase

Postgres

PlanetScale

MySQL (Vitess)

Branching / schema workflow

B

Supabase

Branching + migrations

PlanetScale

Industry-leading branching

Auth built-in

A

Supabase

Yes

PlanetScale

No

Storage built-in

A

Supabase

Yes

PlanetScale

No

Realtime subs

A

Supabase

Yes

PlanetScale

No

Horizontal scaling

B

Supabase

Read replicas

PlanetScale

Vitess shards (massive)

Schema deploy safety

B

Supabase

Standard migrations

PlanetScale

Deploy Requests, zero-dt

Open source core

A

Supabase

Yes

PlanetScale

Vitess yes, platform no

🟢

Best for

Supabase

  • Auth built-in: Yes
  • Storage built-in: Yes
  • Realtime subs: Yes
  • Open source core: Yes
🪐

Best for

PlanetScale

  • Branching / schema workflow: Industry-leading branching
  • Horizontal scaling: Vitess shards (massive)
  • Schema deploy safety: Deploy Requests, zero-dt

Migration path

Different engines: you're migrating MySQL↔Postgres at the same time. Use pgloader (MySQL→PG) or a CDC tool like Debezium for low-downtime moves. Re-implement auth via Supabase Auth or bring your own (Clerk/Auth.js + PlanetScale). Realtime has no PlanetScale equivalent — rebuild on Pusher, Ably, or keep Supabase for that subset.

Frequently asked questions

What is the main difference between Supabase and PlanetScale?

Supabase is a Postgres-based BaaS with auth, storage, and realtime. PlanetScale is serverless MySQL (Vitess) with branching, schema workflows, and massive horizontal scale. Supabase gives you a full backend; PlanetScale gives you a bulletproof MySQL database. In short: Supabase — Open-source Firebase alternative on Postgres. PlanetScale — Serverless MySQL platform with branching.

When should I pick Supabase over PlanetScale?

Pick Supabase when you need a full backend (DB + auth + storage + realtime + functions).

When should I pick PlanetScale over Supabase?

Pick PlanetScale when you want serverless MySQL with branching, zero downtime, and Vitess scale.

Can I migrate from one to the other?

Different engines: you're migrating MySQL↔Postgres at the same time. Use pgloader (MySQL→PG) or a CDC tool like Debezium for low-downtime moves. Re-implement auth via Supabase Auth or bring your own (Clerk/Auth.js + PlanetScale). Realtime has no PlanetScale equivalent — rebuild on Pusher, Ably, or keep Supabase for that subset.

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

Neither Supabase nor PlanetScale is in the MCPizy directory yet. Check each vendor's own docs for an MCP server before assuming one exists.

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⚡VS🟢

Hasura vs Supabase

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🔥VS⚪

Firebase vs Appwrite

Firebase is the Google BaaS — Firestore, Auth, Cloud Functions, FCM, Remote Config. Appwrite is the open-source alternative — self-hostable, similar feature set, permissive license. For Google-tied mobile teams, Firebase. For self-host / open-source, Appwrite.