Can Agents Run It? · evidence — Issue 1: Supabase

claude-opus-4-8 · d1_schema · rep 2

pass
model
claude-opus-4-8
task
d1_schema
rep
2
day
1
steps
6
tokens
18,523
est. cost
$0.222
agent time
41s
wave
s4c
started
2026-07-26T01:54:13Z

The task as the agent received it

You have operator access to a hosted Supabase project. Credentials are in environment variables: SUPABASE_URL, SUPABASE_PROJECT_REF, SUPABASE_ANON_KEY, SUPABASE_SERVICE_ROLE_KEY, SUPABASE_DB_URL (Postgres connection string), SUPABASE_DB_PASSWORD. Set up the database schema for a small course platform. Create exactly these tables in the public schema: 1) authors — id uuid primary key with a generated default, name text NOT NULL, email text NOT NULL and UNIQUE. 2) courses — id uuid primary key with a generated default, author_id uuid NOT NULL referencing authors(id), title text NOT NULL, price_cents integer NOT NULL with a CHECK constraint forbidding negative values, published boolean NOT NULL defaulting to false, created_at timestamptz NOT NULL defaulting to now(). 3) enrollments — id bigint identity (or bigserial) primary key, course_id uuid NOT NULL referencing courses(id) with ON DELETE CASCADE, student_email text NOT NULL, enrolled_at timestamptz NOT NULL defaulting to now(), and a UNIQUE constraint over (course_id, student_email). Also create a plain index on courses(author_id) and a plain index on enrollments(student_email). When you are done, the new tables must be served by the project's REST API (an anonymous-key request to /rest/v1/courses must not error).

What it ran — 6 commands

#1exit 0
env | grep -i supabase | sed 's/=.*/=<set>/'; echo "---"; which psql; which curl; which jq
SUPABASE_DB_PASSWORD=<set>
SUPABASE_DB_URL=<set>
SUPABASE_URL=<set>
SUPABASE_SERVICE_ROLE_KEY=<set>
SUPABASE_PROJECT_REF=<set>
SUPABASE_ANON_KEY=<set>
---
/usr/bin/psql
/usr/bin/curl
/usr/bin/jq
#2exit 0
psql "$SUPABASE_DB_URL" -c "select version();" 2>&1 | head
                                   version                                    
------------------------------------------------------------------------------
 PostgreSQL 17.6 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 15.2.0, 64-bit
(1 row)

#3exit 0
cat > /tmp/schema.sql <<'SQL'
create extension if not exists pgcrypto;

create table if not exists public.authors (
  id    uuid primary key default gen_random_uuid(),
  name  text not null,
  email text not null unique
);

create table if not exists public.courses (
  id          uuid primary key default gen_random_uuid(),
  author_id   uuid not null references public.authors(id),
  title       text not null,
  price_cents integer not null check (price_cents >= 0),
  published   boolean not null default false,
  created_at  timestamptz not null default now()
);

create table if not exists public.enrollments (
  id            bigint generated by default as identity primary key,
  course_id     uuid not null references public.courses(id) on delete cascade,
  student_email text not null,
  enrolled_at   timestamptz not null default now(),
  unique (course_id, student_email)
);

create index if not exists idx_courses_author_id on public.courses(author_id);
create index if not exists idx_enrollments_student_email on public.enrollments(student_email);
SQL
psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 -f /tmp/schema.sql 2>&1
psql:/tmp/schema.sql:1: NOTICE:  extension "pgcrypto" already exists, skipping
CREATE EXTENSION
CREATE TABLE
CREATE TABLE
CREATE TABLE
CREATE INDEX
CREATE INDEX
#4exit 0
psql "$SUPABASE_DB_URL" -c "\d public.authors" -c "\d public.courses" -c "\d public.enrollments" 2>&1
                  Table "public.authors"
 Column | Type | Collation | Nullable |      Default      
--------+------+-----------+----------+-------------------
 id     | uuid |           | not null | gen_random_uuid()
 name   | text |           | not null | 
 email  | text |           | not null | 
Indexes:
    "authors_pkey" PRIMARY KEY, btree (id)
    "authors_email_key" UNIQUE CONSTRAINT, btree (email)
Referenced by:
    TABLE "courses" CONSTRAINT "courses_author_id_fkey" FOREIGN KEY (author_id) REFERENCES authors(id)

                              Table "public.courses"
   Column    |           Type           | Collation | Nullable |      Default      
-------------+--------------------------+-----------+----------+-------------------
 id          | uuid                     |           | not null | gen_random_uuid()
 author_id   | uuid                     |           | not null | 
 title       | text                     |           | not null | 
 price_cents | integer                  |           | not null | 
 published   | boolean                  |           | not null | false
 created_at  | timestamp with time zone |           | not null | now()
Indexes:
    "courses_pkey" PRIMARY KEY, btree (id)
    "idx_courses_author_id" btree (author_id)
Check constraints:
    "courses_price_cents_check" CHECK (price_cents >= 0)
Foreign-key constraints:
    "courses_author_id_fkey" FOREIGN KEY (author_id) REFERENCES authors(id)
Referenced by:
    TABLE "enrollments" CONSTRAINT "enrollments_course_id_fkey" FOREIGN KEY (course_id) REFERENCES courses(id) ON DELETE CASCADE

                                     Table "public.enrollments"
    Column     |           Type           | Collation | Nullable |             Default              
---------------+--------------------------+-----------+----------+----------------------------------
 id            | bigint                   |           | not null | generated by default as identity
 course_id     | uuid                     |           | not null | 
 student_email | text                     |           | not null | 
 enrolled_at   | timestamp with time zone |           | not null | now()
Indexes:
    "enrollments_pkey" PRIMARY KEY, btree (id)
    "enrollments_course_id_student_email_key" UNIQUE CONSTRAINT, btree (course_id, student_email)
    "idx_enrollments_student_email" btree (student_email)
Foreign-key constraints:
    "enrollments_course_id_fkey" FOREIGN KEY (course_id) REFERENCES courses(id) ON DELETE CASCADE

#5exit 0
psql "$SUPABASE_DB_URL" -c "NOTIFY pgrst, 'reload schema';" 2>&1
sleep 3
echo "--- REST test (anon key) ---"
curl -s -o /tmp/resp.txt -w "HTTP %{http_code}\n" \
  "$SUPABASE_URL/rest/v1/courses?select=*" \
  -H "apikey: $SUPABASE_ANON_KEY" \
  -H "Authorization: Bearer $SUPABASE_ANON_KEY"
echo "Body:"; cat /tmp/resp.txt; echo
NOTIFY
--- REST test (anon key) ---
HTTP 200
Body:
[]
#6exit 0
for t in authors courses enrollments; do
  code=$(curl -s -o /dev/null -w "%{http_code}" "$SUPABASE_URL/rest/v1/$t?select=*&limit=1" \
    -H "apikey: $SUPABASE_ANON_KEY" -H "Authorization: Bearer $SUPABASE_ANON_KEY")
  echo "/rest/v1/$t -> HTTP $code"
done
/rest/v1/authors -> HTTP 200
/rest/v1/courses -> HTTP 200
/rest/v1/enrollments -> HTTP 200

What it said at the end

The task is complete. Here's a summary of what I did: ## Summary I connected to the hosted Supabase Postgres database via `SUPABASE_DB_URL` (PostgreSQL 17.6) and created the exact schema requested in the `public` schema: **Tables created:** 1. **`authors`** — `id uuid PK` defaulting to `gen_random_uuid()`, `name text NOT NULL`, `email text NOT NULL UNIQUE`. 2. **`courses`** — `id uuid PK` (`gen_random_uuid()`), `author_id uuid NOT NULL` → FK to `authors(id)`, `title text NOT NULL`, `price_cents integer NOT NULL CHECK (price_cents >= 0)`, `published boolean NOT NULL DEFAULT false`, `created_at timestamptz NOT NULL DEFAULT now()`. 3. **`enrollments`** — `id bigint GENERATED BY DEFAULT AS IDENTITY PK`, `course_id uuid NOT NULL` → FK to `courses(id) ON DELETE CASCADE`, `student_email text NOT NULL`, `enrolled_at timestamptz NOT NULL DEFAULT now()`, plus a `UNIQUE (course_id, student_email)` constraint. **Indexes created:** - `idx_courses_author_id` on `courses(author_id)` - `idx_enrollments_student_email` on `enrollments(student_email)` **REST API:** I issued `NOTIFY pgrst, 'reload schema'` to refresh the PostgREST schema cache. Verified with anonymous-key requests that all three endpoints (`/rest/v1/authors`, `/rest/v1/courses`, `/rest/v1/enrollments`) return **HTTP 200** without error — `/rest/v1/courses` returns `[]` as required. I verified the full structure with `\d` and confirmed every column, default, NOT NULL, UNIQUE, CHECK, foreign key (including `ON DELETE CASCADE`), and index matches the specification. All statements used `IF NOT EXISTS` so the operation is idempotent.

6 earlier narration turn(s) are in the raw transcript.

How it was graded

A shell script executed against the live project and asserted on the state the agent left behind. No model judged another model.

exit 0 OK

Check it yourself

Raw transcript · Task definition and verifier · Every attempt