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

qwen/qwen3-coder-plus · d2_webhooks · rep 1

pass

model

qwen/qwen3-coder-plus

task

d2_webhooks

rep

day

steps

tokens

81,828

est. cost

$0.131

agent time

89s

wave

s4c

started

2026-07-26T02:11:32Z

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 — 23 commands

#1exit 0

env | grep SUPABASE

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

#2exit 0

psql "$SUPABASE_DB_URL" -c "\\dt public.*"

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

#3exit 0

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)

#4exit 0

psql "$SUPABASE_DB_URL" -c "\\d public.webhook_receipts"

                                 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)

#5exit 0

psql "$SUPABASE_DB_URL" -c "SELECT * FROM pg_available_extensions WHERE name LIKE '%http%';"

 name | default_version | installed_version |                                  comment                                   
------+-----------------+-------------------+----------------------------------------------------------------------------
 http | 1.6             |                   | HTTP client for PostgreSQL, allows web page retrieval inside the database.
(1 row)

#6exit 0

psql "$SUPABASE_DB_URL" -c "CREATE EXTENSION IF NOT EXISTS http;"

CREATE EXTENSION

#7exit 1

psql "$SUPABASE_DB_URL" -c "CREATE OR REPLACE FUNCTION send_signup_webhook() RETURNS TRIGGER AS \$\$
DECLARE
    request_body TEXT;
    response http_response;
BEGIN
    -- Build the request body with the new row data (email and plan)
    request_body := json_build_object('email', NEW.email, 'plan', NEW.plan)::TEXT;
    
    -- Make the HTTP POST request
    response := http_post(
        url := '${SUPABASE_URL}/functions/v1/hook-recorder',
        content_type := 'application/json',
        headers := '{"Authorization": "Bearer ${SUPABASE_SERVICE_ROLE_KEY}"}',
        content := request_body
    );
    
    -- Log that we attempted to send the webhook
    RAISE LOG 'Webhook sent for email %, status: %', NEW.email, response.status;
    
    RETURN NEW;
END;
\$\$ LANGUAGE plpgsql;"

ERROR:  unterminated dollar-quoted string at or near "$$
DECLARE
    request_body TEXT;
    response http_response;
BEGIN
    -- Build the request body with the new row data (email and plan)
    request_body := json_build_object('email', NEW.email, 'plan', NEW.plan)::TEXT;
    
    -- Make the HTTP POST request
    response := http_post(
        url := 'https://<ref>.supabase.co/functions/v1/hook-recorder',
        content_type := 'application/json',
        headers := '{Authorization: Bearer"
LINE 1: ...REPLACE FUNCTION send_signup_webhook() RETURNS TRIGGER AS $$
                                                                     ^

#8exit 1

SUPABASE_URL_ESC=$(echo $SUPABASE_URL | sed 's/\\/\\\\/g' | sed 's/"/\\"/g') && \
SERVICE_ROLE_KEY_ESC=$(echo $SUPABASE_SERVICE_ROLE_KEY | sed 's/\\/\\\\/g' | sed 's/"/\\"/g') && \
psql "$SUPABASE_DB_URL" -c "
DO \$$
BEGIN
  IF NOT EXISTS (SELECT 1 FROM pg_proc WHERE proname = 'send_signup_webhook') THEN
    CREATE OR REPLACE FUNCTION send_signup_webhook() RETURNS TRIGGER AS \$
\$BODY\$
DECLARE
    request_body TEXT;
    response http_response;
BEGIN
    -- Build the request body with the new row data (email and plan)
    request_body := json_build_object('email', NEW.email, 'plan', NEW.plan)::TEXT;

    -- Make the HTTP POST request
    BEGIN
        PERFORM net.http_post(
            url => '$SUPABASE_URL_ESC/functions/v1/hook-recorder',
            headers => '{\"Content-Type\": \"application/json\", \"Authorization\": \"Bearer $SERVICE_ROLE_KEY_ESC\"}',
            body => request_body
        );
        RAISE LOG 'Webhook request sent for email %', NEW.email;
    EXCEPTION
        WHEN OTHERS THEN
            RAISE LOG 'Failed to send webhook for email %: %', NEW.email, SQLERRM;
    END;

    RETURN NEW;
END;
\$BODY\$ LANGUAGE plpgsql;
  END IF;
END;
\$$;"

ERROR:  syntax error at or near "$"
LINE 5: ... REPLACE FUNCTION send_signup_webhook() RETURNS TRIGGER AS $
                                                                      ^

#9exit 0

psql "$SUPABASE_DB_URL" -c "SELECT extname FROM pg_extension;"

      extname       
--------------------
 plpgsql
 pg_stat_statements
 uuid-ossp
 pgcrypto
 supabase_vault
 http
(6 rows)

#10exit 1

psql "$SUPABASE_DB_URL" -c "SELECT extname FROM pg_available_extensions WHERE name = 'pg_net';"

ERROR:  column "extname" does not exist
LINE 1: SELECT extname FROM pg_available_extensions WHERE name = 'pg...
               ^
HINT:  Perhaps you meant to reference the column "pg_available_extensions.name".

#11exit 0

psql "$SUPABASE_DB_URL" -c "SELECT name FROM pg_available_extensions WHERE name = 'pg_net';"

  name  
--------
 pg_net
(1 row)

#12exit 0

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

CREATE EXTENSION

#13exit 0

cat > create_webhook_function.sql << 'EOF'
CREATE OR REPLACE FUNCTION send_signup_webhook() 
RETURNS TRIGGER AS $$
DECLARE
    request_body TEXT;
BEGIN
    -- Build the request body with the new row data (email and plan)
    request_body := ('{"email":"' || NEW.email || '","plan":"' || NEW.plan || '"}')::TEXT;
    
    -- Use pg_net to make an HTTP POST request asynchronously
    PERFORM net.http_post(
        url => 'https://<ref>.supabase.co/functions/v1/hook-recorder',
        headers => ('{"Authorization": "Bearer <redacted:SUPABASE_SERVICE_ROLE_KEY>", "Content-Type": "application/json"}')::jsonb,
        body => request_body,
        timeout_milliseconds => 5000
    );
    
    RETURN NEW;
EXCEPTION
    WHEN OTHERS THEN
        RAISE WARNING 'Error in webhook trigger: %', SQLERRM;
        RETURN NEW;
END;
$$ LANGUAGE plpgsql;
EOF

psql "$SUPABASE_DB_URL" -c "\i create_webhook_function.sql"

CREATE FUNCTION

#14exit 0

psql "$SUPABASE_DB_URL" -c "
CREATE OR REPLACE TRIGGER signup_webhook_trigger
    AFTER INSERT ON public.signups
    FOR EACH ROW EXECUTE FUNCTION send_signup_webhook();"

CREATE TRIGGER

#15exit 0

psql "$SUPABASE_DB_URL" -c "INSERT INTO public.signups (email, plan) VALUES ('test@example.com', 'premium');"

INSERT 0 1

WARNING:  Error in webhook trigger: function net.http_post(url => unknown, headers => jsonb, body => text, timeout_milliseconds => integer) does not exist

#16exit 0

psql "$SUPABASE_DB_URL" -c "\df net.*"

                                                                                                                           List of functions
 Schema |             Name              |     Result data type     |                                                                                    Argument data types                                                                                     | Type 
--------+-------------------------------+--------------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------
 net    | _await_response               | boolean                  | request_id bigint                                                                                                                                                                          | func
 net    | _encode_url_with_params_array | text                     | url text, params_array text[]                                                                                                                                                              | func
 net    | _http_collect_response        | net.http_response_result | request_id bigint, async boolean DEFAULT true                                                                                                                                              | func
 net    | _urlencode_string             | text                     | string character varying                                                                                                                                                                   | func
 net    | check_worker_is_up            | void                     |                                                                                                                                                                                            | func
 net    | http_collect_response         | net.http_response_result | request_id bigint, async boolean DEFAULT true                                                                                                                                              | func
 net    | http_delete                   | bigint                   | url text, params jsonb DEFAULT '{}'::jsonb, headers jsonb DEFAULT '{}'::jsonb, timeout_milliseconds integer DEFAULT 5000, body jsonb DEFAULT NULL::jsonb                                   | func
 net    | http_get                      | bigint                   | url text, params jsonb DEFAULT '{}'::jsonb, headers jsonb DEFAULT '{}'::jsonb, timeout_milliseconds integer DEFAULT 5000                                                                   | func
 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
 net    | wait_until_running            | void                     |                                                                                                                                                                                            | func
 net    | wake                          | void                     |                                                                                                                                                                                            | func
 net    | worker_restart                | boolean                  |                                                                                                                                                                                            | func
(12 rows)

#17exit 0

cat > update_webhook_function.sql << 'EOF'
DROP FUNCTION IF EXISTS send_signup_webhook();

CREATE OR REPLACE FUNCTION send_signup_webhook() 
RETURNS TRIGGER AS $$
DECLARE
    request_id BIGINT;
    body_json JSONB;
    headers_json JSONB;
BEGIN
    -- Build the request body with the new row data (email and plan)
    body_json := ('{"email":"' || NEW.email || '","plan":"' || NEW.plan || '"}')::JSONB;
    
    -- Build the headers including authorization
    headers_json := ('{"Authorization": "Bearer <redacted:SUPABASE_SERVICE_ROLE_KEY>", "Content-Type": "application/json"}')::JSONB;
    
    -- Use pg_net to make an HTTP POST request
    request_id := net.http_post(
        url => 'https://<ref>.supabase.co/functions/v1/hook-recorder',
        headers => headers_json,
        body => body_json,
        timeout_milliseconds => 5000
    );
    
    -- Optional: We can attempt to collect response, but since it's for logging only, we may skip 
    -- It depends on whether we want to wait for completion (synchronous) or just send (asynchronous)

    RETURN NEW;
EXCEPTION
    WHEN OTHERS THEN
        RAISE WARNING 'Error in webhook trigger: %', SQLERRM;
        RETURN NEW;
END;
$$ LANGUAGE plpgsql;
EOF

psql "$SUPABASE_DB_URL" -c "\i update_webhook_function.sql"

CREATE FUNCTION

psql:update_webhook_function.sql:1: ERROR:  cannot drop function send_signup_webhook() because other objects depend on it
DETAIL:  trigger signup_webhook_trigger on table signups depends on function send_signup_webhook()
HINT:  Use DROP ... CASCADE to drop the dependent objects too.

#18exit 0

cat > update_webhook_function_complete.sql << 'EOF'
-- Drop the trigger first
DROP TRIGGER IF EXISTS signup_webhook_trigger ON public.signups;

-- Update the function
CREATE OR REPLACE FUNCTION send_signup_webhook() 
RETURNS TRIGGER AS $$
DECLARE
    body_json JSONB;
    headers_json JSONB;
BEGIN
    -- Build the request body with the new row data (email and plan)
    body_json := jsonb_build_object('email', NEW.email, 'plan', NEW.plan);
    
    -- Build the headers including authorization
    headers_json := ('{ "Authorization": "Bearer <redacted:SUPABASE_SERVICE_ROLE_KEY>", "Content-Type": "application/json" }')::JSONB;
    
    -- Use pg_net to make an HTTP POST request (fire-and-forget)
    -- The function returns immediately without waiting for response
    PERFORM net.http_post(
        url => 'https://<ref>.supabase.co/functions/v1/hook-recorder',
        headers => headers_json,
        body => body_json,
        timeout_milliseconds => 5000
    );
    
    RETURN NEW;
EXCEPTION
    WHEN OTHERS THEN
        RAISE WARNING 'Error in webhook trigger: %', SQLERRM;
        RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- Recreate the trigger
CREATE OR REPLACE TRIGGER signup_webhook_trigger
    AFTER INSERT ON public.signups
    FOR EACH ROW EXECUTE FUNCTION send_signup_webhook();
EOF

psql "$SUPABASE_DB_URL" -c "\i update_webhook_function_complete.sql"

DROP TRIGGER
CREATE FUNCTION
CREATE TRIGGER

#19exit 0

psql "$SUPABASE_DB_URL" -c "INSERT INTO public.signups (email, plan) VALUES ('test@example.com', 'premium');"

INSERT 0 1

#20exit 0

psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.webhook_receipts ORDER BY id DESC LIMIT 1;"

 id |         received_at          |                     payload                      
----+------------------------------+--------------------------------------------------
  2 | 2026-07-26 02:13:00.81014+00 | {"plan": "premium", "email": "test@example.com"}
(1 row)

#21exit 0

psql "$SUPABASE_DB_URL" -c "INSERT INTO public.signups (email, plan) VALUES ('another@test.com', 'pro'), ('final@test.com', 'free');"

INSERT 0 2

#22exit 0

sleep 3 && psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.webhook_receipts ORDER BY id;"

 id |          received_at          |                     payload                      
----+-------------------------------+--------------------------------------------------
  2 | 2026-07-26 02:13:00.81014+00  | {"plan": "premium", "email": "test@example.com"}
  3 | 2026-07-26 02:13:05.883239+00 | {"plan": "pro", "email": "another@test.com"}
  4 | 2026-07-26 02:13:05.890603+00 | {"plan": "free", "email": "final@test.com"}
(3 rows)

#23exit 0

psql "$SUPABASE_DB_URL" -c "INSERT INTO public.signups (email, plan) VALUES ('endtoend@test.com', 'enterprise');"

INSERT 0 1

What it said at the end

Excellent! The implementation is working perfectly. Let me clean up by doing one final test of an insert and confirming once more that multiple webhook deliveries occur as expected:

22 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