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

minimax/minimax-m3 · d2_webhooks · rep 3

fail

model

minimax/minimax-m3

task

d2_webhooks

rep

day

steps

tokens

71,613

est. cost

$0.050

agent time

92s

wave

s4c

started

2026-07-26T03:00:25Z

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. Every INSERT into the existing table public.signups must deliver an HTTP webhook: a POST request with a JSON body containing at least the new row's email and plan values, sent to the receiver endpoint {SUPABASE_URL}/functions/v1/hook-recorder (an edge function that is already deployed on this project; SUPABASE_URL is in your environment). The receiver requires a valid project JWT in the Authorization header and records every payload it accepts. Implement the delivery from the database itself, so it fires for ANY insert into signups no matter which client performs it — no external workers, no cron, no client-side code. Delivery may be asynchronous (a few seconds is fine). Prove it end-to-end with a test insert before finishing: the receiver stores accepted payloads in public.webhook_receipts.

What it ran — 40 commands

#1exit 0

env | grep -i supabase | sed 's/=.*/=<redacted>/'

SUPABASE_DB_PASSWORD=<redacted>
SUPABASE_DB_URL=<redacted>
SUPABASE_URL=<redacted>
SUPABASE_SERVICE_ROLE_KEY=<redacted>
SUPABASE_PROJECT_REF=<redacted>
SUPABASE_ANON_KEY=<redacted>

#2exit 0

which psql && psql --version

/usr/bin/psql
psql (PostgreSQL) 18.4 (Debian 18.4-1.pgdg12+1)

#3exit 0

env | grep SUPABASE_URL

SUPABASE_URL=https://<ref>.supabase.co

#4exit 0

echo "SUPABASE_DB_URL=$SUPABASE_DB_URL"

SUPABASE_DB_URL=<redacted:SUPABASE_DB_URL>

#5exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\dt public.*" 2>&1 | head -40

                List of tables
 Schema |       Name       | Type  |  Owner   
--------+------------------+-------+----------
 public | signups          | table | postgres
 public | webhook_receipts | table | postgres
(2 rows)

#6exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\d public.signups" 2>&1

                                     Table "public.signups"
   Column   |           Type           | Collation | Nullable |             Default              
------------+--------------------------+-----------+----------+----------------------------------
 id         | bigint                   |           | not null | generated by default as identity
 email      | text                     |           | not null | 
 plan       | text                     |           | not null | 'free'::text
 created_at | timestamp with time zone |           | not null | now()
Indexes:
    "signups_pkey" PRIMARY KEY, btree (id)

#7exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\df public.*" 2>&1 | head -30

                       List of functions
 Schema | Name | Result data type | Argument data types | Type 
--------+------+------------------+---------------------+------
(0 rows)

#8exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\dn" 2>&1

               List of schemas
          Name           |       Owner       
-------------------------+-------------------
 auth                    | supabase_admin
 extensions              | postgres
 graphql                 | supabase_admin
 graphql_public          | supabase_admin
 pgbouncer               | pgbouncer
 private                 | postgres
 public                  | pg_database_owner
 realtime                | supabase_admin
 storage                 | supabase_admin
 temp_schema_for_restore | postgres
 vault                   | supabase_admin
(11 rows)

#9exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\d public.webhook_receipts" 2>&1

                                 Table "public.webhook_receipts"
   Column    |           Type           | Collation | Nullable |             Default              
-------------+--------------------------+-----------+----------+----------------------------------
 id          | bigint                   |           | not null | generated by default as identity
 received_at | timestamp with time zone |           | not null | now()
 payload     | jsonb                    |           | not null | 
Indexes:
    "webhook_receipts_pkey" PRIMARY KEY, btree (id)

#10exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT current_setting('server_version'); SELECT extname FROM pg_extension;" 2>&1

 current_setting 
-----------------
 17.6
(1 row)

      extname       
--------------------
 plpgsql
 pg_stat_statements
 uuid-ossp
 pgcrypto
 supabase_vault
(5 rows)

#11exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT current_setting('app.settings.jwt_secret', true);" 2>&1

 current_setting 
-----------------
 
(1 row)

#12exit 0

curl -sS -X POST "$SUPABASE_URL/functions/v1/hook-recorder" -H "Authorization: Bearer $SUPABASE_ANON_KEY" -H "Content-Type: application/json" -d '{"email":"test@example.com","plan":"pro"}' -w "\nHTTP_STATUS=%{http_code}\n"

{"ok":true}
HTTP_STATUS=200

#13exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT name FROM pg_available_extensions WHERE name IN ('pg_net','pg_cron','http');" 2>&1

  name   
---------
 http
 pg_net
 pg_cron
(3 rows)

#14exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT current_user, current_database(), inet_server_port();" 2>&1

 current_user | current_database | inet_server_port 
--------------+------------------+------------------
 postgres     | postgres         |             5432
(1 row)

#15exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT rolname, rolconfig FROM pg_roles WHERE rolname IN ('postgres','supabase_admin','supabase_functions_admin');" 2>&1

         rolname          |                               rolconfig                                
--------------------------+------------------------------------------------------------------------
 supabase_admin           | {"search_path=\"$user\", public, auth, extensions",log_statement=none}
 postgres                 | {"search_path=\"\\$user\", public, extensions"}
 supabase_functions_admin | 
(3 rows)

#16exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT n.nspname, p.proname, pg_get_function_identity_arguments(p.oid) FROM pg_proc p JOIN pg_namespace n ON n.oid=p.pronamespace WHERE p.proname='http_get' OR p.proname LIKE 'net%';" 2>&1

  nspname   |        proname         |     pg_get_function_identity_arguments      
------------+------------------------+---------------------------------------------
 pg_catalog | network_le             | inet, inet
 pg_catalog | network_eq             | inet, inet
 pg_catalog | network_lt             | inet, inet
 pg_catalog | network_gt             | inet, inet
 pg_catalog | network_ge             | inet, inet
 pg_catalog | network_ne             | inet, inet
 pg_catalog | network_larger         | inet, inet
 pg_catalog | network_smaller        | inet, inet
 pg_catalog | network_cmp            | inet, inet
 pg_catalog | network_sub            | inet, inet
 pg_catalog | network_subeq          | inet, inet
 pg_catalog | network_sup            | inet, inet
 pg_catalog | network_supeq          | inet, inet
 pg_catalog | network_subset_support | internal
 pg_catalog | network_overlap        | inet, inet
 pg_catalog | network_sortsupport    | internal
 pg_catalog | network                | inet
 pg_catalog | netmask                | inet
 pg_catalog | networksel             | internal, oid, internal, integer
 pg_catalog | networkjoinsel         | internal, oid, internal, smallint, internal
(20 rows)

#17exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "CREATE EXTENSION IF NOT EXISTS pg_net WITH SCHEMA extensions;" 2>&1

CREATE EXTENSION

#18exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT n.nspname, p.proname FROM pg_proc p JOIN pg_namespace n ON n.oid=p.pronamespace WHERE n.nspname='extensions' AND p.proname LIKE 'net_%' ORDER BY p.proname;" 2>&1

 nspname | proname 
---------+---------
(0 rows)

#19exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT n.nspname, p.proname, pg_get_function_identity_arguments(p.oid) FROM pg_proc p JOIN pg_namespace n ON n.oid=p.pronamespace WHERE n.nspname='extensions' ORDER BY p.proname;" 2>&1 | head -40

  nspname   |         proname          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            pg_get_function_identity_arguments                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
------------+--------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 extensions | armor                    | bytea, text[], text[]
 extensions | armor                    | bytea
 extensions | crypt                    | text, text
 extensions | dearmor                  | text
 extensions | decrypt                  | bytea, bytea, text
 extensions | decrypt_iv               | bytea, bytea, bytea, text
 extensions | digest                   | text, text
 extensions | digest                   | bytea, text
 extensions | encrypt                  | bytea, bytea, text
 extensions | encrypt_iv               | bytea, bytea, bytea, text
 extensions | gen_random_bytes         | integer
 extensions | gen_random_uuid          | 
 extensions | gen_salt                 | text
 extensions | gen_salt

… 3,044 more bytes — full output in the raw record

#20exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT n.nspname, p.proname FROM pg_proc p JOIN pg_namespace n ON n.oid=p.pronamespace WHERE n.nspname='extensions' AND (p.proname LIKE 'net%' OR p.proname LIKE 'http%');" 2>&1

 nspname | proname 
---------+---------
(0 rows)

#21exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\dx pg_net" 2>&1

                 List of installed extensions
  Name  | Version | Default version |   Schema   | Description 
--------+---------+-----------------+------------+-------------
 pg_net | 0.20.4  | 0.20.4          | extensions | Async HTTP
(1 row)

#22exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\dt extensions.*" 2>&1

Did not find any tables named "extensions.*".

#23exit 1

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT extensions.net_http_get(url:='https://example.com');" 2>&1

ERROR:  function extensions.net_http_get(url => unknown) does not exist
LINE 1: SELECT extensions.net_http_get(url:='https://example.com');
               ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.

#24exit 1

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT extensions.net.http_get('https://example.com');" 2>&1

ERROR:  cross-database references are not implemented: extensions.net.http_get
LINE 1: SELECT extensions.net.http_get('https://example.com');
               ^

#25exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM extensions.pg_stat_net_database;" 2>&1 | head

ERROR:  relation "extensions.pg_stat_net_database" does not exist
LINE 1: SELECT * FROM extensions.pg_stat_net_database;
                      ^

#26exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT n.nspname, p.proname FROM pg_proc p JOIN pg_namespace n ON n.oid=p.pronamespace WHERE p.proname IN ('http_get','http_post','http_delete') ORDER BY 1,2;" 2>&1

 nspname |   proname   
---------+-------------
 net     | http_delete
 net     | http_get
 net     | http_post
(3 rows)

#27exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT extnamespace::regnamespace, extname FROM pg_extension WHERE extname='pg_net';" 2>&1

 extnamespace | extname 
--------------+---------
 extensions   | pg_net
(1 row)

#28exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT n.nspname FROM pg_namespace n WHERE n.nspname IN ('net','extensions','pgnet');" 2>&1

  nspname   
------------
 extensions
 net
(2 rows)

#29exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM net.http_get('https://example.com');" 2>&1

 http_get 
----------
        1
(1 row)

#30exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT datname FROM pg_database WHERE datistemplate=false;" 2>&1

 datname  
----------
 postgres
(1 row)

#31exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT current_database();" 2>&1

 current_database 
------------------
 postgres
(1 row)

#32exit 0

cat > /tmp/test_pgnet.sql <<'EOF'
SELECT net.http_post(
  url := current_setting('app.settings.target_url'),
  headers := jsonb_build_object(
    'Content-Type','application/json',
    'Authorization','Bearer ' || current_setting('app.settings.jwt')
  ),
  body := jsonb_build_object('email','probe@example.com','plan','pro')::text
) AS request_id;
EOF
PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SET app.settings.target_url = '$SUPABASE_URL/functions/v1/hook-recorder';" -c "SET app.settings.jwt = '$SUPABASE_ANON_KEY';" -f /tmp/test_pgnet.sql 2>&1

SET
SET
psql:/tmp/test_pgnet.sql:8: ERROR:  function net.http_post(url => text, headers => jsonb, body => text) does not exist
LINE 1: SELECT net.http_post(
               ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.

#33exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\df net.http_post" 2>&1

                                                                                                             List of functions
 Schema |   Name    | Result data type |                                                                                    Argument data types                                                                                     | Type 
--------+-----------+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------
 net    | http_post | bigint           | url text, body jsonb DEFAULT '{}'::jsonb, params jsonb DEFAULT '{}'::jsonb, headers jsonb DEFAULT '{"Content-Type": "application/json"}'::jsonb, timeout_milliseconds integer DEFAULT 5000 | func
(1 row)

#34exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT pg_get_function_arguments(p.oid), pg_get_function_result(p.oid) FROM pg_proc p JOIN pg_namespace n ON n.oid=p.pronamespace WHERE n.nspname='net' AND p.proname='http_post';" 2>&1

                                                                                 pg_get_function_arguments                                                                                  | pg_get_function_result 
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------
 url text, body jsonb DEFAULT '{}'::jsonb, params jsonb DEFAULT '{}'::jsonb, headers jsonb DEFAULT '{"Content-Type": "application/json"}'::jsonb, timeout_milliseconds integer DEFAULT 5000 | bigint
(1 row)

#35exit 0

cat > /tmp/test_pgnet.sql <<'EOF'
SELECT net.http_post(
  url := current_setting('app.settings.target_url'),
  body := jsonb_build_object('email','probe@example.com','plan','pro'),
  headers := jsonb_build_object(
    'Content-Type','application/json',
    'Authorization','Bearer ' || current_setting('app.settings.jwt')
  )
) AS request_id;
EOF
PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" \
  -c "SET app.settings.target_url = '$SUPABASE_URL/functions/v1/hook-recorder';" \
  -c "SET app.settings.jwt = '$SUPABASE_ANON_KEY';" \
  -f /tmp/test_pgnet.sql 2>&1

SET
SET
 request_id 
------------
          2
(1 row)

#36exit 0

sleep 3
PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT id, received_at, payload FROM public.webhook_receipts ORDER BY id DESC LIMIT 5;" 2>&1

 id |          received_at          |                    payload                    
----+-------------------------------+-----------------------------------------------
  3 | 2026-07-26 03:01:54.938344+00 | {"plan": "pro", "email": "probe@example.com"}
  2 | 2026-07-26 03:01:04.265362+00 | {"plan": "pro", "email": "test@example.com"}
(2 rows)

#37exit 0

cat > /tmp/set_settings.sql <<EOF
ALTER DATABASE postgres SET app.settings.target_url = '$SUPABASE_URL/functions/v1/hook-recorder';
ALTER DATABASE postgres SET app.settings.jwt = '$SUPABASE_ANON_KEY';
ALTER DATABASE postgres SET app.settings.source = 'signups-trigger';
EOF
PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -f /tmp/set_settings.sql 2>&1

psql:/tmp/set_settings.sql:1: ERROR:  permission denied to set parameter "app.settings.target_url"
psql:/tmp/set_settings.sql:2: ERROR:  permission denied to set parameter "app.settings.jwt"
psql:/tmp/set_settings.sql:3: ERROR:  permission denied to set parameter "app.settings.source"

#38exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT current_setting('is_superuser');" 2>&1

 current_setting 
-----------------
 off
(1 row)

#39exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT rolsuper, rolname FROM pg_roles WHERE rolname=current_user;" 2>&1

 rolsuper | rolname  
----------+----------
 f        | postgres
(1 row)

#40exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT rolname, rolsuper FROM pg_roles ORDER BY rolsuper DESC;" 2>&1

           rolname           | rolsuper 
-----------------------------+----------
 supabase_admin              | t
 pg_read_all_data            | f
 pg_write_all_data           | f
 pg_monitor                  | f
 pg_read_all_settings        | f
 pg_read_all_stats           | f
 pg_stat_scan_tables         | f
 pg_read_server_files        | f
 pg_write_server_files       | f
 pg_execute_server_program   | f
 pg_signal_backend           | f
 pg_checkpoint               | f
 pg_maintain                 | f
 pg_use_reserved_connections | f
 pg_create_subscription      | f
 dashboard_user              | f
 authenticated               | f
 anon                        | f
 service_role                | f
 supabase_privileged_role    | f
 postgres                    | f
 authenticator               | f
 supabase_auth_admin         | f
 supabase_storage_admin      | f
 supabase_replication_admin  | f
 supabase_etl_admin          | f
 supabase_read_only_user     | f
 supabase_realtime_admin     | f
 pgbouncer                   | f
 pg_database_owner           | f
 supabase_functions_admin    | f
(31 rows)

What it said at the end

Custom GUCs need superuser. The `postgres` role on Supabase has limited perms. Let me check what's possible.

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 1 FAIL: no webhook receipt for the test insert after 30 s (no trigger, pg_net missing, or receiver rejected the call — verify_jwt requires an Authorization header)

Check it yourself

Raw transcript · Task definition and verifier · Every attempt