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This skill should be used when user asks to "use supabase-js", "query Supabase database", "supabase auth", "supabase storage", "supabase realtime", "supabase edge functions", or works with the @supabase/supabase-js JavaScript/TypeScript SDK.
Passed 22 of 22 test cases with the skill, and 21 of 22 without it.
1 fixed21 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
A test case the skill fixed. Same model, same prompt, with and without the skill.
In Supabase PostgreSQL, write a SQL Row Level Security policy that allows authenticated users to read only their own rows in the `orders` table based on `auth.uid()`.
| Checked | Without skill | With skill |
|---|---|---|
| Writes a SQL CREATE POLICY statement specifying FOR SELECT USING (auth.uid() = user_id). | Missed | Passed |
| Does not use JavaScript SDK filter methods inside a SQL policy statement. | Passed | Passed |
The instructions your model reads when the skill loads.
Skill for building applications with the @supabase/supabase-js SDK. Covers Auth, Database (PostgREST), Storage, Realtime, and Edge Functions.
The SDK docs at https://supabase.com/docs/reference/javascript are the source of truth. The reference files alongside this skill contain source code and READMEs extracted from the monorepo for quick lookup.
npm install @supabase/supabase-js
import { createClient } from '@supabase/supabase-js'
const supabase = createClient('https://xyzcompany.supabase.co', 'public-anon-key')
For type-safe queries, generate types from your database schema:
supabase gen types typescript --project-id your-project-id > database.types.ts
import { createClient } from '@supabase/supabase-js'
import type { Database } from './database.types'
const supabase = createClient<Database>(SUPABASE_URL, SUPABASE_ANON_KEY)
Database query?
├─ Select rows → supabase.from('table').select('*')
├─ Filter rows → .select().eq('col', val) / .gt() / .lt() / .in() / .like()
├─ Join tables → .select('*, other_table(*)') or .select('*, other_table!fk(*)')
test cases passed, vs 21 / 22 without
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