Hi Supabase team 👋

I’ve been building an unofficial Java client for Supabase and wanted to share it early to get feedback from the community.

There’s currently no official Java SDK, so I aimed to create something that feels close to supabase-js, but fully type-safe and idiomatic to Java.

Core Idea

• Developers should not think about HTTP, JSON, or headers — only data and queries.

✅ Current Status

• PostgREST (complete MVP)
• Fluent query builder (from, select, eq, or, etc.)
• Immutable request chaining
• Typed deserialization (execute(User.class))
• Insert / update / delete / upsert support
• RPC support (including scalar functions)
• Structured error handling mapped from PostgREST responses

Example:

SupabaseClient client = new SupabaseClient(url, key);

List<User> users = client.postgrest()
    .from("users")
    .eq("active", true)
    .selectList(User.class);

🧱 Architecture

• SupabaseHttpClient → OkHttp-based transport layer
• PostgrestClient → query entry point
• PostgrestRequestBuilder → immutable fluent builder