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

claude-sonnet-5 · d1_schema · rep 3

pass
model
claude-sonnet-5
task
d1_schema
rep
3
day
1
steps
5
tokens
16,812
est. cost
$0.101
agent time
30s
wave
s4
started
2026-07-24T04:31:48Z

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 — 5 commands

#1exit 0
echo "SUPABASE_URL=$SUPABASE_URL"; echo "SUPABASE_PROJECT_REF=$SUPABASE_PROJECT_REF"; echo "SUPABASE_DB_URL=$SUPABASE_DB_URL" | sed -E 's/:[^:@]+@/:****@/'; which psql || echo "no psql"; 
SUPABASE_URL=https://<ref>.supabase.co
SUPABASE_PROJECT_REF=<ref>
SUPABASE_DB_URL=postgresql://postgres.<ref>:<redacted>@aws-0-us-east-1.pooler.supabase.com:5432/postgres
/usr/bin/psql
#2exit 0
cat > /tmp/schema.sql << 'EOF'
begin;

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 always 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);

commit;
EOF
psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 -f /tmp/schema.sql
BEGIN
CREATE EXTENSION
CREATE TABLE
CREATE TABLE
CREATE TABLE
CREATE INDEX
CREATE INDEX
COMMIT
psql:/tmp/schema.sql:3: NOTICE:  extension "pgcrypto" already exists, skipping
#3exit 0
psql "$SUPABASE_DB_URL" -c "\d public.authors"
psql "$SUPABASE_DB_URL" -c "\d public.courses"
psql "$SUPABASE_DB_URL" -c "\d public.enrollments"
                  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 always 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

#4exit 0
curl -s -o /tmp/resp.json -w "HTTP_STATUS:%{http_code}\n" "$SUPABASE_URL/rest/v1/courses?select=*" \
  -H "apikey: $SUPABASE_ANON_KEY" \
  -H "Authorization: Bearer $SUPABASE_ANON_KEY"
cat /tmp/resp.json; echo
HTTP_STATUS:200
[]
#5exit 0
for t in authors courses enrollments; do
  echo "== $t =="
  curl -s -o /tmp/r.json -w "HTTP_STATUS:%{http_code}\n" "$SUPABASE_URL/rest/v1/$t?select=*&limit=1" \
    -H "apikey: $SUPABASE_ANON_KEY" -H "Authorization: Bearer $SUPABASE_ANON_KEY"
  cat /tmp/r.json; echo
done
== authors ==
HTTP_STATUS:200
[]
== courses ==
HTTP_STATUS:200
[]
== enrollments ==
HTTP_STATUS:200
[]

What it said at the end

All three tables return HTTP 200 with `[]` via the anon-key REST API — no errors, and RLS is not blocking reads (default Supabase behavior when no RLS is enabled returns data normally for tables without policies restricting anon, or these tables have no RLS enabled which is fine per the task's requirements since it only required no errors). ## Summary I set up the course platform schema in the public schema of the Supabase project via `psql` against `SUPABASE_DB_URL`: - **authors**: `id uuid primary key default gen_random_uuid()`, `name text not null`, `email text not null unique` - **courses**: `id uuid primary key default gen_random_uuid()`, `author_id uuid not null references authors(id)`, `title text not null`, `price_cents integer not null` with a `CHECK (price_cents >= 0)`, `published boolean not null default false`, `created_at timestamptz not null default now()` - **enrollments**: `id bigint generated always as identity primary key`, `course_id uuid not null references courses(id) on delete cascade`, `student_email text not null`, `enrolled_at timestamptz not null default now()`, with `UNIQUE(course_id, student_email)` Indexes created: - `idx_courses_author_id` on `courses(author_id)` - `idx_enrollments_student_email` on `enrollments(student_email)` (Also confirmed `pgcrypto` extension was already installed, providing `gen_random_uuid()`.) Verified via `\d` that all columns, defaults, constraints, and indexes match the spec exactly, and confirmed via `curl` with the anon API key that `/rest/v1/authors`, `/rest/v1/courses`, and `/rest/v1/enrollments` all respond with HTTP 200 (empty arrays), meaning PostgREST is already serving the new tables with no errors.

5 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