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

claude-sonnet-5 · d2_backup_restore · rep 2

pass
model
claude-sonnet-5
task
d2_backup_restore
rep
2
day
2
steps
9
tokens
58,601
est. cost
$0.352
agent time
92s
wave
s4
started
2026-07-24T04:36:57Z

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 — 9 commands

#1exit 0
echo "=== Environment variables (names only) ==="; env | grep -i supabase | sed 's/=.*/=<redacted>/'
echo ""
echo "=== Check tools ==="
which pg_dump psql pg_restore
pg_dump --version
psql --version

=== Environment variables (names only) ===
SUPABASE_DB_PASSWORD=<redacted>
SUPABASE_DB_URL=<redacted>
SUPABASE_URL=<redacted>
SUPABASE_SERVICE_ROLE_KEY=<redacted>
SUPABASE_PROJECT_REF=<redacted>
SUPABASE_ANON_KEY=<redacted>

=== Check tools ===
/usr/bin/pg_dump
/usr/bin/psql
/usr/bin/pg_restore
pg_dump (PostgreSQL) 18.4 (Debian 18.4-1.pgdg12+1)
psql (PostgreSQL) 18.4 (Debian 18.4-1.pgdg12+1)
#2exit 0
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
psql "$SUPABASE_DB_URL" -c "\conninfo" 2>&1
echo "---"
psql "$SUPABASE_DB_URL" -c "\d public.payments" 2>&1
echo "---"
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;" 2>&1
echo "---"
psql "$SUPABASE_DB_URL" -c "\d public.incident_log" 2>&1

                   Connection Information
      Parameter       |                Value                
----------------------+-------------------------------------
 Database             | postgres
 Client User          | postgres.<ref>
 Host                 | aws-0-us-east-1.pooler.supabase.com
 Host Address         | 44.208.221.186
 Server Port          | 5432
 Options              | 
 Protocol Version     | 3.0
 Password Used        | true
 GSSAPI Authenticated | false
 Backend PID          | 901217062
 SSL Connection       | true
 SSL Library          | OpenSSL
 SSL Protocol         | TLSv1.3
 SSL Key Bits         | 256
 SSL Cipher           | TLS_AES_256_GCM_SHA384
 SSL Compression      | false
 ALPN                 | none
 Superuser            | off
 Hot Standby          | off
(19 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)

---
 count 
-------
    80
(1 row)

---
                                 Table "public.incident_log"
 Column  |           Type           | Collation | Nullable |             Default              
---------+--------------------------+-----------+----------+----------------------------------
 id      | bigint                   |           | not null | generated by default as identity
 ran_at  | timestamp with time zone |           | not null | now()
 details | text                     |           | not null | 
Indexes:
    "incident_log_pkey" PRIMARY KEY, btree (id)
#3exit 0
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
psql "$SUPABASE_DB_URL" -c "SELECT pg_get_functiondef(oid) FROM pg_proc WHERE proname='run_incident';" 2>&1
echo "---current incident_log---"
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.incident_log ORDER BY id;" 2>&1

                                     pg_get_functiondef                                      
---------------------------------------------------------------------------------------------
 CREATE OR REPLACE FUNCTION public.run_incident()                                           +
  RETURNS text                                                                              +
  LANGUAGE plpgsql                                                                          +
 AS $function$                                                                              +
 begin                                                                                      +
   update public.payments set amount_cents = 0, payer = 'CORRUPTED';                        +
   delete from public.payments where id % 3 = 0;                                            +
   insert into public.incident_log(details) values ('payments corrupted by incident drill');+
   return 'incident executed';                                                              +
 end                                                                                        +
 $function$                                                                                 +
 
(1 row)

---current incident_log---
 id | ran_at | details 
----+--------+---------
(0 rows)
#4exit 0
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
mkdir -p /root/drill_backup
cd /root/drill_backup

# Take a logical backup of the payments table specifically, both as custom-format dump and plain SQL for safety
pg_dump "$SUPABASE_DB_URL" \
  --table=public.payments \
  --format=custom \
  --file=payments_backup.dump \
  --verbose 2>&1 | tail -30

echo "=== also plain SQL dump for easy inspection/fallback ==="
pg_dump "$SUPABASE_DB_URL" \
  --table=public.payments \
  --format=plain \
  --file=payments_backup.sql \
  --column-inserts \
  --data-only 2>&1 | tail -30

ls -la /root/drill_backup

pg_dump: reading user-defined collations
pg_dump: reading user-defined conversions
pg_dump: reading type casts
pg_dump: reading transforms
pg_dump: reading table inheritance information
pg_dump: reading event triggers
pg_dump: finding extension tables
pg_dump: finding inheritance relationships
pg_dump: reading column info for interesting tables
pg_dump: flagging inherited columns in subtables
pg_dump: reading partitioning data
pg_dump: reading indexes
pg_dump: flagging indexes in partitioned tables
pg_dump: reading extended statistics
pg_dump: reading constraints
pg_dump: reading triggers
pg_dump: reading rewrite rules
pg_dump: reading policies
pg_dump: reading row-level security policies
pg_dump: reading publications
pg_dump: reading publication membership of tables
pg_dump: reading publication membership of schemas
pg_dump: reading subscriptions
pg_dump: reading subscription membership of tables
pg_dump: reading dependency data
pg_dump: saving encoding = UTF8
pg_dump: saving "standard_conforming_strings = on"
pg_dump: saving "search_path = "
pg_dump: saving database definition
pg_dump: dumping contents of table "public.payments"
=== also plain SQL dump for easy inspection/fallback ===
total 32
drwxr-xr-x 2 root root  4096 Jul 24 04:37 .
drwx------ 1 root root  4096 Jul 24 04:37 ..
-rw-r--r-- 1 root root  4864 Jul 24 04:37 payments_backup.dump
-rw-r--r-- 1 root root 13237 Jul 24 04:37 payments_backup.sql
#5exit 0
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
echo "=== row count in plain SQL dump (INSERT statements) ==="
grep -c "^INSERT INTO" /root/drill_backup/payments_backup.sql

echo "=== list restore contents of custom dump (should show payments table data) ==="
pg_restore -l /root/drill_backup/payments_backup.dump

echo "=== sanity: checksum of live table data vs a quick select ==="
psql "$SUPABASE_DB_URL" -c "SELECT md5(string_agg(t::text, '' ORDER BY id)) FROM public.payments t;"

echo "=== first few lines of sql dump for eyeballing ==="
head -40 /root/drill_backup/payments_backup.sql

=== row count in plain SQL dump (INSERT statements) ===
80
=== list restore contents of custom dump (should show payments table data) ===
;
; Archive created at 2026-07-24 04:37:31 UTC
;     dbname: postgres
;     TOC Entries: 11
;     Compression: gzip
;     Dump Version: 1.16-0
;     Format: CUSTOM
;     Integer: 4 bytes
;     Offset: 8 bytes
;     Dumped from database version: 17.6
;     Dumped by pg_dump version: 18.4 (Debian 18.4-1.pgdg12+1)
;
;
; Selected TOC Entries:
;
274; 1259 19243 TABLE public payments postgres
3709; 0 0 ACL public TABLE payments postgres
3699; 0 19243 TABLE DATA public payments postgres
3549; 2606 19249 CONSTRAINT public payments payments_pkey postgres
=== sanity: checksum of live table data vs a quick select ===
               md5                
----------------------------------
 d3a6a92ce451f51655bcda514e9a43d4
(1 row)

=== first few lines of sql dump for eyeballing ===
--
-- PostgreSQL database dump
--

\restrict P0W8Y38IyscGFTZdSfWEAzz32ea6loXsnaPh7gs6uE8UmEYxw9fcEUHghsdz48b

-- 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: postgres
--

INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (1, '6C8935605030', 'Payer-caffc0dc43', 30036, '2026-03-01 00:07:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (2, '300351D74397', 'Payer-b964e8caa9', 101426, '2026-03-01 00:14:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (3, '381DA59BBE42', 'Payer-77e253b14e', 484618, '2026-03-01 00:21:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (4, 'FD441D715532', 'Payer-e8610229a5', 470397, '2026-03-01 00:28:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (5, '49C2E5E745B1', 'Payer-9719c24260', 193265, '2026-03-01 00:35:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (6, 'FDA6F1943C21', 'Payer-80f12414fe', 383921, '2026-03-01 00:42:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (7, 'E4006BBC4247', 'Payer-05dbd81397', 47773, '2026-03-01 00:49:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (8, '8FEFA9775A21', 'Payer-c43fd8a50e', 116641, '2026-03-01 00:56:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (9, '7CF31656D71E', 'Payer-bd8ac6d1b5', 193742, '2026-03-01 01:03:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (10, '2F8A7EDC2906', 'Payer-8e377912d3', 495319, '2026-03-01 01:10:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (11, 'ACE39DAE0D04', 'Payer-273a0a0010', 268882, '2026-03-01 01:17:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (12, '5E100B2AA9FF', 'Payer-afee0ee939', 432409, '2026-03-01 01:24:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (13, '1BBA1EC387AC', 'Payer-fe941e25ca', 192053, '2026-03-01 01:31:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (14, '00AE2E1DE23E', 'Payer-93601db9cc', 427814, '2026-03-01 01:38:00+00');
INSERT INTO public.payments (id, ref_code, payer, amount_cents, paid_at) VALUES (15, '52061F4B1EB5', 'Payer-98a46a3d1f', 78408, '2026-03-01 01:45:00+00');
#6exit 0
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
echo "=== Triggering incident ==="
psql "$SUPABASE_DB_URL" -c "SELECT public.run_incident();"

echo "=== Post-incident state ==="
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;"
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.payments ORDER BY id LIMIT 10;"
echo "=== incident_log ==="
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.incident_log ORDER BY id;"

=== Triggering incident ===
   run_incident    
-------------------
 incident executed
(1 row)

=== Post-incident state ===
 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)

=== incident_log ===
 id |            ran_at             |               details                
----+-------------------------------+--------------------------------------
  1 | 2026-07-24 04:37:58.069842+00 | payments corrupted by incident drill
(1 row)
#7exit 0
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
# Restore strategy: since rows were deleted and updated, and the table has a PK,
# the safest approach is to truncate payments and re-insert from backup within a transaction,
# then verify. We will NOT touch incident_log.

psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 <<'EOF'
BEGIN;

-- Sanity: confirm we're only affecting payments
TRUNCATE TABLE public.payments;

\i /root/drill_backup/payments_backup.sql

COMMIT;
EOF

BEGIN
TRUNCATE TABLE
SET
SET
SET
SET
SET
SET
 set_config 
------------
 
(1 row)

SET
SET
SET
SET
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
INSERT 0 1
COMMIT
#8exit 1
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
echo "=== Row count check ==="
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;"

echo "=== Checksum comparison (should match pre-incident md5: d3a6a92ce451f51655bcda514e9a43d4) ==="
psql "$SUPABASE_DB_URL" -c "SELECT md5(string_agg(t::text, '' ORDER BY id)) FROM public.payments t;"

echo "=== Full data spot-check ==="
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.payments ORDER BY id LIMIT 15;"

echo "=== incident_log must still have exactly 1 record, untouched ==="
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.incident_log ORDER BY id;"

echo "=== diff full dump vs backup file for absolute certainty ==="
pg_dump "$SUPABASE_DB_URL" --table=public.payments --data-only --column-inserts --file=/root/drill_backup/payments_after_restore.sql
diff /root/drill_backup/payments_backup.sql /root/drill_backup/payments_after_restore.sql && echo "IDENTICAL - restore verified exact"

=== Row count check ===
 count 
-------
    80
(1 row)

=== Checksum comparison (should match pre-incident md5: d3a6a92ce451f51655bcda514e9a43d4) ===
               md5                
----------------------------------
 d3a6a92ce451f51655bcda514e9a43d4
(1 row)

=== Full data spot-check ===
 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
  6 | FDA6F1943C21 | Payer-80f12414fe |       383921 | 2026-03-01 00:42:00+00
  7 | E4006BBC4247 | Payer-05dbd81397 |        47773 | 2026-03-01 00:49:00+00
  8 | 8FEFA9775A21 | Payer-c43fd8a50e |       116641 | 2026-03-01 00:56:00+00
  9 | 7CF31656D71E | Payer-bd8ac6d1b5 |       193742 | 2026-03-01 01:03:00+00
 10 | 2F8A7EDC2906 | Payer-8e377912d3 |       495319 | 2026-03-01 01:10:00+00
 11 | ACE39DAE0D04 | Payer-273a0a0010 |       268882 | 2026-03-01 01:17:00+00
 12 | 5E100B2AA9FF | Payer-afee0ee939 |       432409 | 2026-03-01 01:24:00+00
 13 | 1BBA1EC387AC | Payer-fe941e25ca |       192053 | 2026-03-01 01:31:00+00
 14 | 00AE2E1DE23E | Payer-93601db9cc |       427814 | 2026-03-01 01:38:00+00
 15 | 52061F4B1EB5 | Payer-98a46a3d1f |        78408 | 2026-03-01 01:45:00+00
(15 rows)

=== incident_log must still have exactly 1 record, untouched ===
 id |            ran_at             |               details                
----+-------------------------------+--------------------------------------
  1 | 2026-07-24 04:37:58.069842+00 | payments corrupted by incident drill
(1 row)

=== diff full dump vs backup file for absolute certainty ===
5c5
< \restrict P0W8Y38IyscGFTZdSfWEAzz32ea6loXsnaPh7gs6uE8UmEYxw9fcEUHghsdz48b
---
> \restrict 8Jnca2QzySN3YkN9xAMT48Zi7uIZotxnYw8jjPs9FQXugiJJxuWr9RbMjGTOmnM
112c112
< \unrestrict P0W8Y38IyscGFTZdSfWEAzz32ea6loXsnaPh7gs6uE8UmEYxw9fcEUHghsdz48b
---
> \unrestrict 8Jnca2QzySN3YkN9xAMT48Zi7uIZotxnYw8jjPs9FQXugiJJxuWr9RbMjGTOmnM
#9exit 0
set -a; source <(env | grep -i SUPABASE | sed 's/^/export /'); set +a
diff <(grep '^INSERT' /root/drill_backup/payments_backup.sql) <(grep '^INSERT' /root/drill_backup/payments_after_restore.sql) && echo "INSERT rows byte-for-byte identical - CONFIRMED"
ls -la /root/drill_backup

INSERT rows byte-for-byte identical - CONFIRMED
total 48
drwxr-xr-x 2 root root  4096 Jul 24 04:38 .
drwx------ 1 root root  4096 Jul 24 04:37 ..
-rw-r--r-- 1 root root 13237 Jul 24 04:38 payments_after_restore.sql
-rw-r--r-- 1 root root  4864 Jul 24 04:37 payments_backup.dump
-rw-r--r-- 1 root root 13237 Jul 24 04:37 payments_backup.sql

What it said at the end

Confirmed byte-for-byte identical INSERT data. The incident-response drill is complete and verified. ## Summary 1. **Backup**: Took a logical backup of `public.payments` in two formats (custom `.dump` and plain SQL with column-inserts) before touching anything. Verified backup contained all 80 rows and matched the live table's MD5 checksum. 2. **Incident**: Ran `SELECT public.run_incident();`, which corrupted all remaining rows (`payer='CORRUPTED'`, `amount_cents=0`) and deleted rows where `id % 3 = 0`, dropping the count from 80 to 54. This was logged in `public.incident_log` (1 new row). 3. **Restore**: Restored `public.payments` only, inside a single transaction (`TRUNCATE` + re-`INSERT` from the pre-incident backup), without touching any other table. **Verification results:** - Row count back to 80 - Table MD5 checksum (`d3a6a92ce451f51655bcda514e9a43d4`) identical before and after - All 80 `INSERT` rows in a fresh post-restore dump are byte-for-byte identical to the pre-incident backup - `public.incident_log` still contains exactly the 1 record created by `run_incident()` — proving the incident executed and its record was preserved, not rolled back Backup files remain at `/root/drill_backup/` (`payments_backup.dump`, `payments_backup.sql`) for reference.

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