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

claude-sonnet-5 · d2_backup_restore · rep 1

pass
model
claude-sonnet-5
task
d2_backup_restore
rep
1
day
2
steps
14
tokens
79,837
est. cost
$0.479
agent time
90s
wave
s4
started
2026-07-24T04:35:11Z

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 "SUPABASE_URL=$SUPABASE_URL"; echo "SUPABASE_PROJECT_REF=$SUPABASE_PROJECT_REF"; echo "DB_URL set: ${SUPABASE_DB_URL:+yes}"; echo "PW set: ${SUPABASE_DB_PASSWORD:+yes}"; which pg_dump psql
SUPABASE_URL=https://<ref>.supabase.co
SUPABASE_PROJECT_REF=<ref>
DB_URL set: yes
PW set: yes
/usr/bin/pg_dump
/usr/bin/psql
#2exit 0
psql "$SUPABASE_DB_URL" -c "\conninfo" 2>&1 | head -20
                   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          | 1729971045
 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
#3exit 0
psql "$SUPABASE_DB_URL" -c "\d public.payments" 2>&1
echo "---rowcount---"
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;" 2>&1
echo "---incident_log schema---"
psql "$SUPABASE_DB_URL" -c "\d public.incident_log" 2>&1
echo "---run_incident def---"
psql "$SUPABASE_DB_URL" -c "\df+ public.run_incident" 2>&1
                         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)

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

---incident_log schema---
                                 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)

---run_incident def---
                                                                                          List of functions
 Schema |     Name     | Result data type | Argument data types | Type | Volatility | Parallel |  Owner   | Security | Leakproof? |    Access privileges     | Language | Internal name | Description 
--------+--------------+------------------+---------------------+------+------------+----------+----------+----------+------------+--------------------------+----------+---------------+-------------
 public | run_incident | text             |                     | func | volatile   | unsafe   | postgres | invoker  | no         | =X/postgres             +| plpgsql  |               | 
        |              |                  |                     |      |            |          |          |          |            | postgres=X/postgres     +|          |               | 
        |              |                  |                     |      |            |          |          |          |            | anon=X/postgres         +|          |               | 
        |              |                  |                     |      |            |          |          |          |            | authenticated=X/postgres+|          |               | 
        |              |                  |                     |      |            |          |          |          |            | service_role=X/postgres  |          |               | 
(1 row)
#4exit 0
mkdir -p /root/drill_backup
cd /root/drill_backup

# Custom-format dump of just the payments table (data + structure), for pg_restore
pg_dump "$SUPABASE_DB_URL" \
  --table=public.payments \
  --format=custom \
  --file=payments_backup.dump \
  --verbose 2>&1 | tail -30

echo "=== exit code: $? ==="
ls -la
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"
=== exit code: 0 ===
total 16
drwxr-xr-x 2 root root 4096 Jul 24 04:35 .
drwx------ 1 root root 4096 Jul 24 04:35 ..
-rw-r--r-- 1 root root 4864 Jul 24 04:35 payments_backup.dump
#5exit 0
cd /root/drill_backup

# Plain SQL dump (schema+data) as human-readable backup
pg_dump "$SUPABASE_DB_URL" \
  --table=public.payments \
  --format=plain \
  --file=payments_backup.sql \
  2>&1

# CSV export as an extra safety net for eyeballing / manual restore
psql "$SUPABASE_DB_URL" -c "\copy public.payments TO '/root/drill_backup/payments_backup.csv' WITH CSV HEADER" 2>&1

# Verify the custom dump lists the table and row estimates
pg_restore -l payments_backup.dump

echo "=== CSV row count (excluding header) ==="
tail -n +2 payments_backup.csv | wc -l

echo "=== SQL dump COPY line check ==="
grep -c "^COPY public.payments" payments_backup.sql
ls -la /root/drill_backup
COPY 80
;
; Archive created at 2026-07-24 04:35:43 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 19209 TABLE public payments postgres
3709; 0 0 ACL public TABLE payments postgres
3699; 0 19209 TABLE DATA public payments postgres
3549; 2606 19215 CONSTRAINT public payments payments_pkey postgres
=== CSV row count (excluding header) ===
80
=== SQL dump COPY line check ===
1
total 32
drwxr-xr-x 2 root root 4096 Jul 24 04:36 .
drwx------ 1 root root 4096 Jul 24 04:35 ..
-rw-r--r-- 1 root root 5054 Jul 24 04:36 payments_backup.csv
-rw-r--r-- 1 root root 4864 Jul 24 04:35 payments_backup.dump
-rw-r--r-- 1 root root 6665 Jul 24 04:36 payments_backup.sql
#6exit 0
cd /root/drill_backup
sha256sum payments_backup.csv payments_backup.sql payments_backup.dump

echo "=== Row hash from live DB (order-independent aggregate) ==="
psql "$SUPABASE_DB_URL" -t -c "
SELECT md5(string_agg(row_hash, '' ORDER BY row_hash))
FROM (
  SELECT md5(id::text || ref_code || payer || amount_cents::text || paid_at::text) AS row_hash
  FROM public.payments
) t;"
41cc8a54a6818031af836662b2a5e9697a80d12f5c7d0fcbcd0dd30ad0f7238f  payments_backup.csv
162ba0910e20e3ba41159c1905a512095a7ee9729aed94ad4fc6bcb0f0c96d8f  payments_backup.sql
5f53fd66e0cedcee6801fa6f843474e5759fecaa6631c632f6f4ac07db40b1dc  payments_backup.dump
=== Row hash from live DB (order-independent aggregate) ===
 6fa3a86bcea3d3bb1fedbef8c49edff1
#7exit 0
psql "$SUPABASE_DB_URL" -c "SELECT public.run_incident();" 2>&1
   run_incident    
-------------------
 incident executed
(1 row)
#8exit 0
echo "=== incident_log ==="
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.incident_log ORDER BY id DESC LIMIT 5;"

echo "=== payments state now ==="
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;"
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.payments ORDER BY id LIMIT 10;"
=== incident_log ===
 id |            ran_at             |               details                
----+-------------------------------+--------------------------------------
  1 | 2026-07-24 04:36:11.370523+00 | payments corrupted by incident drill
(1 row)

=== payments state now ===
 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)
#9exit 0
cd /root/drill_backup

# Restore data-only into payments (truncate + reload), leaving everything else (incl. incident_log) untouched.
pg_restore \
  --data-only \
  --table=payments \
  --disable-triggers \
  -d "$SUPABASE_DB_URL" \
  payments_backup.dump 2>&1

echo "=== exit: $? ==="
pg_restore: error: COPY failed for table "payments": ERROR:  duplicate key value violates unique constraint "payments_pkey"
DETAIL:  Key (id)=(1) already exists.
CONTEXT:  COPY payments, line 1
pg_restore: warning: errors ignored on restore: 1
=== exit: 1 ===
#10exit 0
# Truncate payments only, then restore data-only from backup, all in one transaction for safety
psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 <<'EOF'
BEGIN;
TRUNCATE TABLE public.payments;
EOF
echo "truncate txn exit: $?"
BEGIN
TRUNCATE TABLE
truncate txn exit: 0
#11exit 0
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;"
 count 
-------
    54
(1 row)
#12exit 0
cat > /root/drill_backup/restore_payments.sql <<'EOF'
BEGIN;
TRUNCATE TABLE public.payments;
\copy public.payments FROM '/root/drill_backup/payments_backup.csv' WITH CSV HEADER
COMMIT;
EOF

psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 -f /root/drill_backup/restore_payments.sql 2>&1
echo "=== exit: $? ==="
BEGIN
TRUNCATE TABLE
COPY 80
COMMIT
=== exit: 0 ===
#13exit 0
echo "=== payments row count ==="
psql "$SUPABASE_DB_URL" -c "SELECT count(*) FROM public.payments;"

echo "=== payments sample ==="
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.payments ORDER BY id LIMIT 10;"

echo "=== integrity hash comparison ==="
psql "$SUPABASE_DB_URL" -t -c "
SELECT md5(string_agg(row_hash, '' ORDER BY row_hash))
FROM (
  SELECT md5(id::text || ref_code || payer || amount_cents::text || paid_at::text) AS row_hash
  FROM public.payments
) t;"
echo "Expected: 6fa3a86bcea3d3bb1fedbef8c49edff1"

echo "=== incident_log still intact ==="
psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.incident_log ORDER BY id;"
=== payments row count ===
 count 
-------
    80
(1 row)

=== payments sample ===
 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
(10 rows)

=== integrity hash comparison ===
 6fa3a86bcea3d3bb1fedbef8c49edff1

Expected: 6fa3a86bcea3d3bb1fedbef8c49edff1
=== incident_log still intact ===
 id |            ran_at             |               details                
----+-------------------------------+--------------------------------------
  1 | 2026-07-24 04:36:11.370523+00 | payments corrupted by incident drill
(1 row)
#14exit 0
echo "=== Final sanity: sequences/other objects untouched, only payments affected ==="
psql "$SUPABASE_DB_URL" -c "\dt public.*"
echo "=== backups retained ==="
ls -la /root/drill_backup
=== Final sanity: sequences/other objects untouched, only payments affected ===
              List of tables
 Schema |     Name     | Type  |  Owner   
--------+--------------+-------+----------
 public | incident_log | table | postgres
 public | payments     | table | postgres
(2 rows)

=== backups retained ===
total 36
drwxr-xr-x 2 root root 4096 Jul 24 04:36 .
drwx------ 1 root root 4096 Jul 24 04:35 ..
-rw-r--r-- 1 root root 5054 Jul 24 04:36 payments_backup.csv
-rw-r--r-- 1 root root 4864 Jul 24 04:35 payments_backup.dump
-rw-r--r-- 1 root root 6665 Jul 24 04:36 payments_backup.sql
-rw-r--r-- 1 root root  131 Jul 24 04:36 restore_payments.sql

What it said at the end

Drill completed successfully, in the required order: **1. Backup (before incident)** - Took three redundant logical backups of `public.payments` while it was still clean (80 rows): a `pg_dump` custom-format archive (`payments_backup.dump`), a plain SQL dump (`payments_backup.sql`), and a CSV export (`payments_backup.csv`). - Computed an order-independent MD5 fingerprint of the row data (`6fa3a86bcea3d3bb1fedbef8c49edff1`) to later prove exact restoration. **2. Incident triggered** - Ran `SELECT public.run_incident();` — it corrupted `payer` and `amount_cents` values and deleted rows (80 → 54), and recorded itself as `incident_log` id=1 ("payments corrupted by incident drill"). **3. Restore (payments only)** - `pg_restore --data-only` hit a PK conflict since corruption mutated rows in place rather than only deleting them, so I used an atomic `TRUNCATE public.payments` + `\copy ... FROM payments_backup.csv` inside a single transaction (BEGIN/COMMIT) to guarantee no partial state. - Verified: `payments` back to 80 rows, full data hash matches the pre-incident fingerprint exactly (zero loss/divergence). - Confirmed `incident_log` still has its record of the incident (untouched), and no other tables/objects were modified — only `payments` was rolled back, as required. Backup files remain on disk at `/root/drill_backup/` in case further verification is needed.

13 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