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

xiaomi/mimo-v2.5 · d2_webhooks · rep 3

pass

model

xiaomi/mimo-v2.5

task

d2_webhooks

rep

day

steps

tokens

66,055

est. cost

$0.013

agent time

61s

wave

s4c

started

2026-07-26T03:48:28Z

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 — 20 commands

#1exit 0

echo "SUPABASE_URL=$SUPABASE_URL"
echo "SUPABASE_PROJECT_REF=$SUPABASE_PROJECT_REF"
echo "SUPABASE_ANON_KEY length: ${#SUPABASE_ANON_KEY}"
echo "SUPABASE_SERVICE_ROLE_KEY length: ${#SUPABASE_SERVICE_ROLE_KEY}"
echo "SUPABASE_DB_URL=$SUPABASE_DB_URL"
echo "SUPABASE_DB_PASSWORD length: ${#SUPABASE_DB_PASSWORD}"

SUPABASE_URL=https://<ref>.supabase.co
SUPABASE_PROJECT_REF=<ref>
SUPABASE_ANON_KEY length: 208
SUPABASE_SERVICE_ROLE_KEY length: 219
SUPABASE_DB_URL=<redacted:SUPABASE_DB_URL>
SUPABASE_DB_PASSWORD length: 48

#2exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\d public.signups"

                                     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)

#3exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM pg_extension WHERE extname = 'pg_net';"

 oid | extname | extowner | extnamespace | extrelocatable | extversion | extconfig | extcondition 
-----+---------+----------+--------------+----------------+------------+-----------+--------------
(0 rows)

#4exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.signups LIMIT 5;"

 id | email | plan | created_at 
----+-------+------+------------
(0 rows)

#5exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "CREATE EXTENSION IF NOT EXISTS pg_net;"

CREATE EXTENSION

#6exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" <<'SQL'
-- Create the async webhook function triggered on INSERT to signups
CREATE OR REPLACE FUNCTION public.webhook_on_signup()
RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
  -- Fire an async HTTP POST via pg_net
  PERFORM net.http_post(
    url     := current_setting('app.settings.webhook_url', true),
    body    := jsonb_build_object(
                 'email', NEW.email,
                 'plan',  NEW.plan
               )::text,
    headers := jsonb_build_object(
                 'Content-Type', 'application/json',
                 'Authorization', 'Bearer ' || current_setting('app.settings.webhook_jwt', true)
               )
  );
  RETURN NEW;
END;
$$;

-- Store the settings (service role JWT for server-side auth to edge function)
ALTER DATABASE postgres SET app.settings.webhook_url =
  '${SUPABASE_URL}/functions/v1/hook-recorder';
ALTER DATABASE postgres SET app.settings.webhook_jwt =
  '${SUPABASE_SERVICE_ROLE_KEY}';

-- Create the trigger
DROP TRIGGER IF EXISTS trg_webhook_on_signup ON public.signups;
CREATE TRIGGER trg_webhook_on_signup
  AFTER INSERT ON public.signups
  FOR EACH ROW
  EXECUTE FUNCTION public.webhook_on_signup();

SQL

CREATE FUNCTION
DROP TRIGGER
CREATE TRIGGER

ERROR:  permission denied to set parameter "app.settings.webhook_url"
ERROR:  permission denied to set parameter "app.settings.webhook_jwt"
NOTICE:  trigger "trg_webhook_on_signup" for relation "public.signups" does not exist, skipping

#7exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" <<'SQL'
CREATE OR REPLACE FUNCTION public.webhook_on_signup()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  webhook_url text := '${SUPABASE_URL}/functions/v1/hook-recorder';
  webhook_jwt text := '${SUPABASE_SERVICE_ROLE_KEY}';
BEGIN
  PERFORM net.http_post(
    url     := webhook_url,
    body    := jsonb_build_object(
                 'email', NEW.email,
                 'plan',  NEW.plan
               )::text,
    headers := jsonb_build_object(
                 'Content-Type', 'application/json',
                 'Authorization', 'Bearer ' || webhook_jwt
               )
  );
  RETURN NEW;
END;
$$;

DROP TRIGGER IF EXISTS trg_webhook_on_signup ON public.signups;
CREATE TRIGGER trg_webhook_on_signup
  AFTER INSERT ON public.signups
  FOR EACH ROW
  EXECUTE FUNCTION public.webhook_on_signup();
SQL

CREATE FUNCTION
DROP TRIGGER
CREATE TRIGGER

#8exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
SELECT trigger_name, event_manipulation, event_object_table
FROM information_schema.triggers
WHERE event_object_schema = 'public' AND event_object_table = 'signups';
"

     trigger_name      | event_manipulation | event_object_table 
-----------------------+--------------------+--------------------
 trg_webhook_on_signup | INSERT             | signups
(1 row)

#9exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\d public.webhook_receipts" 2>/dev/null || echo "Table webhook_receipts does not exist yet"

                                 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 1

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
INSERT INTO public.signups (email, plan) VALUES ('test-webhook@example.com', 'pro');
"

ERROR:  function net.http_post(url => text, body => text, headers => jsonb) 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.
QUERY:  SELECT net.http_post(
    url     := webhook_url,
    body    := jsonb_build_object(
                 'email', NEW.email,
                 'plan',  NEW.plan
               )::text,
    headers := jsonb_build_object(
                 'Content-Type', 'application/json',
                 'Authorization', 'Bearer ' || webhook_jwt
               )
  )
CONTEXT:  PL/pgSQL function webhook_on_signup() line 6 at PERFORM

#11exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT proname, proargtypes::regtype[] FROM pg_proc WHERE pronamespace = 'net'::regnamespace ORDER BY proname;"

            proname            |              proargtypes               
-------------------------------+----------------------------------------
 _await_response               | [0:0]={bigint}
 _encode_url_with_params_array | [0:1]={text,text[]}
 _http_collect_response        | [0:1]={bigint,boolean}
 _urlencode_string             | [0:0]={"character varying"}
 check_worker_is_up            | {}
 http_collect_response         | [0:1]={bigint,boolean}
 http_delete                   | [0:4]={text,jsonb,jsonb,integer,jsonb}
 http_get                      | [0:3]={text,jsonb,jsonb,integer}
 http_post                     | [0:4]={text,jsonb,jsonb,jsonb,integer}
 wait_until_running            | {}
 wake                          | {}
 worker_restart                | {}
(12 rows)

#12exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT pg_get_function_identity_arguments('net.http_post'::regproc);"

                       pg_get_function_identity_arguments                        
---------------------------------------------------------------------------------
 url text, body jsonb, params jsonb, headers jsonb, timeout_milliseconds integer
(1 row)

#13exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" <<'SQL'
CREATE OR REPLACE FUNCTION public.webhook_on_signup()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  webhook_url text := '${SUPABASE_URL}/functions/v1/hook-recorder';
  webhook_jwt text := '${SUPABASE_SERVICE_ROLE_KEY}';
BEGIN
  PERFORM net.http_post(
    url    := webhook_url,
    body   := jsonb_build_object(
                'email', NEW.email,
                'plan',  NEW.plan
              ),
    params := '{}'::jsonb,
    headers := jsonb_build_object(
                 'Content-Type', 'application/json',
                 'Authorization', 'Bearer ' || webhook_jwt
               ),
    timeout_milliseconds := 5000
  );
  RETURN NEW;
END;
$$;
SQL

CREATE FUNCTION

#14exit 1

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
INSERT INTO public.signups (email, plan) VALUES ('test-webhook@example.com', 'pro');
"

ERROR:  invalid URL "${SUPABASE_URL}/functions/v1/hook-recorder": Bad scheme
CONTEXT:  SQL statement "insert into net.http_request_queue(method, url, headers, body, timeout_milliseconds)
    values (
        'POST',
        net._encode_url_with_params_array(url, params_array),
        headers,
        convert_to(body::text, 'UTF8'),
        timeout_milliseconds
    )
    returning id"
PL/pgSQL function net.http_post(text,jsonb,jsonb,jsonb,integer) line 37 at SQL statement
SQL statement "SELECT net.http_post(
    url    := webhook_url,
    body   := jsonb_build_object(
                'email', NEW.email,
                'plan',  NEW.plan
              ),
    params := '{}'::jsonb,
    headers := jsonb_build_object(
                 'Content-Type', 'application/json',
                 'Authorization', 'Bearer ' || webhook_jwt
               ),
    timeout_milliseconds := 5000
  )"
PL/pgSQL function webhook_on_signup() line 6 at PERFORM

#15exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" <<EOSQL
CREATE OR REPLACE FUNCTION public.webhook_on_signup()
RETURNS trigger
LANGUAGE plpgsql
AS \$\$
DECLARE
  webhook_url text := '${SUPABASE_URL}/functions/v1/hook-recorder';
  webhook_jwt text := '${SUPABASE_SERVICE_ROLE_KEY}';
BEGIN
  PERFORM net.http_post(
    url    := webhook_url,
    body   := jsonb_build_object(
                'email', NEW.email,
                'plan',  NEW.plan
              ),
    params := '{}'::jsonb,
    headers := jsonb_build_object(
                 'Content-Type', 'application/json',
                 'Authorization', 'Bearer ' || webhook_jwt
               ),
    timeout_milliseconds := 5000
  );
  RETURN NEW;
END;
\$\$;
EOSQL

CREATE FUNCTION

#16exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT pg_get_functiondef(oid) FROM pg_proc WHERE proname = 'webhook_on_signup';"

                                                                                                                  pg_get_functiondef                                                                                                                  
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 CREATE OR REPLACE FUNCTION public.webhook_on_signup()                                                                                                                                                                                               +
  RETURNS trigger                                                                                                                                                                                                                                    +
  LANGUAGE plpgsql                                                                                                                                                                                                                                   +
 AS $function$                                                                                                                                                                                                                                       +
 DECLARE                                                                                                                                                                                                                                             +
   webhook_url text := 'https://<ref>.supabase.co/functions/v1/hook-recorder';                                                                                                                                                        +
   webhook_jwt text := '<redacted:SUPABASE_SERVICE_ROLE_KEY>';+
 BEGIN                                                                                                                                                                                                                                               +
   PERFORM net.http_post(                                                                                                                                                                                                                            +
     url    := webhook_url,                                                                                                                                                                                                                          +
     body   := jsonb_build_object(                                                                                                                                                                                                                   +
                 'email', NEW.email,                                                                                                                                                                                                                 +
                 'plan',  NEW.plan                                                                                                                                                                                                                   +
               ),                                                                                                                                                                                                                                    +
     params := '{}'::jsonb,                                                                                                                                                                                                                          +

… 2,235 more bytes — full output in the raw record

#17exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
INSERT INTO public.signups (email, plan) VALUES ('test-webhook@example.com', 'pro');
"

INSERT 0 1

#18exit 0

sleep 5 && PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.webhook_receipts ORDER BY id DESC LIMIT 5;"

 id |          received_at          |                       payload                        
----+-------------------------------+------------------------------------------------------
  2 | 2026-07-26 03:49:27.854455+00 | {"plan": "pro", "email": "test-webhook@example.com"}
(1 row)

#19exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM net._http_response ORDER BY created DESC LIMIT 5;" 2>/dev/null || PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM net.http_request_queue ORDER BY created DESC LIMIT 5;"

 id | status_code |   content_type   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    headers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |   content   | timed_out | error_msg |            created            
----+-------------+------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------+-----------+-----------+-------------------------------
  1 |         200 | application/json | {"date": "Sun, 26 Jul 2026 03:49:27 GMT", "vary": "Accept-Encoding", "cf-ray": "a2106f404a76d91c-IAD", "server": "cloudflare", "alt-svc": "h3=\":443\"; ma=86400", "set-cookie": "__cf_bm=nKIhA9DjwFuiZaBPtmCsfQSGDYWXiJSboo7q3B35jSs-1785037767.7215674-1.0.1.1-g0OXusAKaZ7MSS4D33LiBakTgNsJ.4Xy1V6_YrhEHdkKMSMLYiLdmACeKs3uJupzWd4WlmgxCsnHd24bl3_dDOtTgkUopQGQmi8h6ZQPIhWcwgacqacEeuHRnfKe9OTA; HttpOnly; SameSite=None; Secure; Path=/; Domain=supabase.co; Expires=Sun, 26 Jul 2026 04:19:27 GMT", "x-served-by": "supabase-edge-runtime", "content-type": "application/json", "sb-request-id": "019f9c8a-c42d-7b72-810b-caf15a7afd74", "sb-project-ref": "<ref>", "cf-cache-status": "DYNAMIC", "x-sb-edge-region": "us-east-1", "sb-gateway-version": "1", "x-deno-execution-id": "c2fde5b5-4bc5-419e-8870-bfd719aa1b74", "endpoint-load-metrics": "application_utilization:8,named_metrics.queue_depth:8", "strict-transport-security": "max-age=31536000; includeSubDomains; preload"} | {"ok":true} | f         |           | 2026-07-26 03:49:27.718662+00
(1 row)

#20exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.signups;"

 id |          email           | plan |          created_at           
----+--------------------------+------+-------------------------------
  3 | test-webhook@example.com | pro  | 2026-07-26 03:49:27.716591+00
(1 row)

What it said at the end

All done. Here's a summary of what was implemented: ## What I did **Problem:** Every `INSERT` into `public.signups` must deliver a webhook POST to `{SUPABASE_URL}/functions/v1/hook-recorder` with `{email, plan}` JSON and a valid JWT — entirely from the database, no external workers. **Solution — database-native async HTTP via `pg_net`:** 1. **Installed the `pg_net` extension** — a Supabase-provided PostgreSQL extension that allows making HTTP requests directly from SQL functions, asynchronously via a background worker. 2. **Created trigger function `webhook_on_signup()`** — a PL/pgSQL `AFTER INSERT` trigger function that calls `net.http_post()` with: - **URL:** the `hook-recorder` edge function endpoint - **Body:** `jsonb_build_object('email', NEW.email, 'plan', NEW.plan)` - **Headers:** `Authorization: Bearer <service_role_key>` and `Content-Type: application/json` 3. **Attached trigger `trg_webhook_on_signup`** to `public.signups` — fires for every row inserted, regardless of which client (Supabase API, direct SQL, dashboard, etc.). 4. **End-to-end proof:** - Inserted `('test-webhook@example.com', 'pro')` into `signups` - The trigger fired, `pg_net` delivered an async HTTP POST - Edge function returned HTTP **200** with `{"ok":true}` - Payload appeared in `webhook_receipts`: `{"email": "test-webhook@example.com", "plan": "pro"}` ✅

11 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