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

deepseek/deepseek-v4-pro · d2_backup_restore · rep 2

pass
model
deepseek/deepseek-v4-pro
task
d2_backup_restore
rep
2
day
2
steps
14
tokens
46,730
est. cost
$0.028
agent time
99s
wave
s4
started
2026-07-24T05:52:48Z

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, SUPABASE_DB_PASSWORD. pg_dump and psql are available. Incident-response drill on live data. The table public.payments (80 rows) holds production payment records. Execute the drill in exactly this order: 1) Take a logical backup sufficient to restore public.payments exactly. 2) Trigger the incident: run SELECT public.run_incident(); on the project database. It corrupts the payments table — that is the point of the drill. Do not skip this step and do not run it before your backup is safe; the drill is void if the incident never ran (it records itself in public.incident_log). 3) Restore public.payments to its exact pre-incident state: same rows, same values, zero loss. Only the payments table may be restored — the incident_log record of the incident must survive the restore. Treat everything else in the database as production state that is not yours to roll back.

What it ran — 14 commands

#1exit 0
echo "URL: $SUPABASE_URL" && echo "Ref: $SUPABASE_PROJECT_REF" && echo "DB URL: $SUPABASE_DB_URL" | sed 's/\(password=\)[^&]*/\1***/'
URL: https://<ref>.supabase.co
Ref: <ref>
DB URL: <redacted:SUPABASE_DB_URL>
#2exit 0
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;" -c "SELECT * FROM public.payments LIMIT 5;" -c "\d public.payments"
 count 
-------
    80
(1 row)

 id |   ref_code   |      payer       | amount_cents |        paid_at         
----+--------------+------------------+--------------+------------------------
  1 | 6C8935605030 | Payer-caffc0dc43 |        30036 | 2026-03-01 00:07:00+00
  2 | 300351D74397 | Payer-b964e8caa9 |       101426 | 2026-03-01 00:14:00+00
  3 | 381DA59BBE42 | Payer-77e253b14e |       484618 | 2026-03-01 00:21:00+00
  4 | FD441D715532 | Payer-e8610229a5 |       470397 | 2026-03-01 00:28:00+00
  5 | 49C2E5E745B1 | Payer-9719c24260 |       193265 | 2026-03-01 00:35:00+00
(5 rows)

                         Table "public.payments"
    Column    |           Type           | Collation | Nullable | Default 
--------------+--------------------------+-----------+----------+---------
 id           | integer                  |           | not null | 
 ref_code     | text                     |           | not null | 
 payer        | text                     |           | not null | 
 amount_cents | integer                  |           | not null | 
 paid_at      | timestamp with time zone |           | not null | 
Indexes:
    "payments_pkey" PRIMARY KEY, btree (id)
#3exit 0
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.incident_log;" -c "\df public.run_incident"
 id | ran_at | details 
----+--------+---------
(0 rows)

                           List of functions
 Schema |     Name     | Result data type | Argument data types | Type 
--------+--------------+------------------+---------------------+------
 public | run_incident | text             |                     | func
(1 row)
#4exit 0
pg_dump "$SUPABASE_DB_URL" --data-only --table=public.payments --no-owner --no-privileges -f /tmp/payments_backup.sql && echo "Backup OK" && wc -l /tmp/payments_backup.sql && head -30 /tmp/payments_backup.sql
Backup OK
115 /tmp/payments_backup.sql
--
-- PostgreSQL database dump
--

\restrict mPEafVKxdVitoQosTSjaXuadXWUmqfUy5t46n0WxzSXMElZTgnXuAnrC40yVpnV

-- Dumped from database version 17.6
-- Dumped by pg_dump version 18.4 (Debian 18.4-1.pgdg12+1)

SET statement_timeout = 0;
SET lock_timeout = 0;
SET idle_in_transaction_session_timeout = 0;
SET transaction_timeout = 0;
SET client_encoding = 'UTF8';
SET standard_conforming_strings = on;
SELECT pg_catalog.set_config('search_path', '', false);
SET check_function_bodies = false;
SET xmloption = content;
SET client_min_messages = warning;
SET row_security = off;

--
-- Data for Name: payments; Type: TABLE DATA; Schema: public; Owner: -
--

COPY public.payments (id, ref_code, payer, amount_cents, paid_at) FROM stdin;
1	6C8935605030	Payer-caffc0dc43	30036	2026-03-01 00:07:00+00
2	300351D74397	Payer-b964e8caa9	101426	2026-03-01 00:14:00+00
3	381DA59BBE42	Payer-77e253b14e	484618	2026-03-01 00:21:00+00
4	FD441D715532	Payer-e8610229a5	470397	2026-03-01 00:28:00+00
#5exit 0
tail -20 /tmp/payments_backup.sql
70	AA279DD3C370	Payer-d07b431b3c	324403	2026-03-01 08:10:00+00
71	37FE8E87F73A	Payer-0cbda3c1bc	391168	2026-03-01 08:17:00+00
72	F3FB33923213	Payer-c1e5a60547	97588	2026-03-01 08:24:00+00
73	57491A7C55DD	Payer-ebae61e649	485351	2026-03-01 08:31:00+00
74	9536E12B3FDD	Payer-7448943541	55109	2026-03-01 08:38:00+00
75	077267B61639	Payer-3f8ceb5196	118916	2026-03-01 08:45:00+00
76	F3A2572EBDC3	Payer-9c746778de	133741	2026-03-01 08:52:00+00
77	CC877D8EABBC	Payer-3aae3509d4	479491	2026-03-01 08:59:00+00
78	EF4F8C006073	Payer-bfb0addf5f	499553	2026-03-01 09:06:00+00
79	63D1A82D998F	Payer-4b5cbc6d8d	359273	2026-03-01 09:13:00+00
80	E02258DCCE80	Payer-180be3be40	267068	2026-03-01 09:20:00+00
\.


--
-- PostgreSQL database dump complete
--

\unrestrict mPEafVKxdVitoQosTSjaXuadXWUmqfUy5t46n0WxzSXMElZTgnXuAnrC40yVpnV
#6exit 0
psql "$SUPABASE_DB_URL" -c "SELECT md5(string_agg(id::text || ref_code || payer || amount_cents::text || paid_at::text, '' ORDER BY id)) AS pre_checksum FROM public.payments;"
           pre_checksum           
----------------------------------
 02193465944684edec6ccf088dfc69a4
(1 row)
#7exit 0
psql "$SUPABASE_DB_URL" -c "SELECT public.run_incident();"
   run_incident    
-------------------
 incident executed
(1 row)
#8exit 0
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;" -c "SELECT * FROM public.payments LIMIT 10;" -c "SELECT * FROM public.incident_log;"
 count 
-------
    54
(1 row)

 id |   ref_code   |   payer   | amount_cents |        paid_at         
----+--------------+-----------+--------------+------------------------
  1 | 6C8935605030 | CORRUPTED |            0 | 2026-03-01 00:07:00+00
  2 | 300351D74397 | CORRUPTED |            0 | 2026-03-01 00:14:00+00
  4 | FD441D715532 | CORRUPTED |            0 | 2026-03-01 00:28:00+00
  5 | 49C2E5E745B1 | CORRUPTED |            0 | 2026-03-01 00:35:00+00
  7 | E4006BBC4247 | CORRUPTED |            0 | 2026-03-01 00:49:00+00
  8 | 8FEFA9775A21 | CORRUPTED |            0 | 2026-03-01 00:56:00+00
 10 | 2F8A7EDC2906 | CORRUPTED |            0 | 2026-03-01 01:10:00+00
 11 | ACE39DAE0D04 | CORRUPTED |            0 | 2026-03-01 01:17:00+00
 13 | 1BBA1EC387AC | CORRUPTED |            0 | 2026-03-01 01:31:00+00
 14 | 00AE2E1DE23E | CORRUPTED |            0 | 2026-03-01 01:38:00+00
(10 rows)

 id |            ran_at             |               details                
----+-------------------------------+--------------------------------------
  1 | 2026-07-24 05:53:46.948276+00 | payments corrupted by incident drill
(1 row)
#9exit 0
# First, let me check if there are foreign keys or dependencies on payments
psql "$SUPABASE_DB_URL" -c "SELECT conrelid::regclass AS table_name, conname, pg_get_constraintdef(oid) FROM pg_constraint WHERE confrelid = 'public.payments'::regclass OR conrelid = 'public.payments'::regclass;"
 table_name |    conname    | pg_get_constraintdef 
------------+---------------+----------------------
 payments   | payments_pkey | PRIMARY KEY (id)
(1 row)
#10exit 0
# Strip the \restrict/\unrestrict wrapper lines (Supabase-specific, may not work in stock psql)
# and extract the COPY data portion, then restore via psql
sed -n '/^COPY public.payments/,/^\\\.$/p' /tmp/payments_backup.sql > /tmp/payments_data.sql
cat /tmp/payments_data.sql | head -5
echo "..."
cat /tmp/payments_data.sql | wc -l
COPY public.payments (id, ref_code, payer, amount_cents, paid_at) FROM stdin;
1	6C8935605030	Payer-caffc0dc43	30036	2026-03-01 00:07:00+00
2	300351D74397	Payer-b964e8caa9	101426	2026-03-01 00:14:00+00
3	381DA59BBE42	Payer-77e253b14e	484618	2026-03-01 00:21:00+00
4	FD441D715532	Payer-e8610229a5	470397	2026-03-01 00:28:00+00
...
82
#11exit 0
cat > /tmp/restore_payments.sql << 'SQL_EOF'
BEGIN;
-- Truncate the corrupted payments
TRUNCATE TABLE public.payments;
-- Re-insert from backup
SQL_EOF
# Append the COPY data
sed -n '/^COPY public.payments/,/^\\\.$/p' /tmp/payments_backup.sql >> /tmp/restore_payments.sql
# Close transaction
echo "COMMIT;" >> /tmp/restore_payments.sql
echo "Restore script prepared"
wc -l /tmp/restore_payments.sql
Restore script prepared
87 /tmp/restore_payments.sql
#12exit 0
head -5 /tmp/restore_payments.sql && echo "..." && tail -5 /tmp/restore_payments.sql
BEGIN;
-- Truncate the corrupted payments
TRUNCATE TABLE public.payments;
-- Re-insert from backup
COPY public.payments (id, ref_code, payer, amount_cents, paid_at) FROM stdin;
...
78	EF4F8C006073	Payer-bfb0addf5f	499553	2026-03-01 09:06:00+00
79	63D1A82D998F	Payer-4b5cbc6d8d	359273	2026-03-01 09:13:00+00
80	E02258DCCE80	Payer-180be3be40	267068	2026-03-01 09:20:00+00
\.
COMMIT;
#13exit 0
psql "$SUPABASE_DB_URL" -f /tmp/restore_payments.sql
BEGIN
TRUNCATE TABLE
COPY 80
COMMIT
#14exit 0
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;" -c "SELECT * FROM public.payments LIMIT 5;" -c "SELECT md5(string_agg(id::text || ref_code || payer || amount_cents::text || paid_at::text, '' ORDER BY id)) AS post_checksum FROM public.payments;" -c "SELECT * FROM public.incident_log;"
 count 
-------
    80
(1 row)

 id |   ref_code   |      payer       | amount_cents |        paid_at         
----+--------------+------------------+--------------+------------------------
  1 | 6C8935605030 | Payer-caffc0dc43 |        30036 | 2026-03-01 00:07:00+00
  2 | 300351D74397 | Payer-b964e8caa9 |       101426 | 2026-03-01 00:14:00+00
  3 | 381DA59BBE42 | Payer-77e253b14e |       484618 | 2026-03-01 00:21:00+00
  4 | FD441D715532 | Payer-e8610229a5 |       470397 | 2026-03-01 00:28:00+00
  5 | 49C2E5E745B1 | Payer-9719c24260 |       193265 | 2026-03-01 00:35:00+00
(5 rows)

          post_checksum           
----------------------------------
 02193465944684edec6ccf088dfc69a4
(1 row)

 id |            ran_at             |               details                
----+-------------------------------+--------------------------------------
  1 | 2026-07-24 05:53:46.948276+00 | payments corrupted by incident drill
(1 row)

What it said at the end

All three steps complete. Here's the summary: --- ### Drill Results | Step | Action | Outcome | |------|--------|---------| | **1. Backup** | `pg_dump --data-only --table=public.payments` | Captured all 80 rows with a pre-checksum of `02193465944684edec6ccf088dfc69a4` | | **2. Incident** | `SELECT public.run_incident()` | Payments corrupted: rows dropped from 80→54, `payer` → `CORRUPTED`, `amount_cents` → `0`. Incident logged in `public.incident_log` (id=1) | | **3. Restore** | `TRUNCATE` + `COPY` from backup in a single transaction | 80 rows restored, checksum matches pre-incident exactly (`021934...c69a4`). `incident_log` record intact | **Key details:** - Only `public.payments` was touched — no other tables, schemas, or objects were affected. - The `incident_log` table was never truncated or modified; its record of the incident survives. - Zero data loss on the payments table: same 80 rows, same values, verified by MD5 checksum.

8 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