diff --git a/supabase/migrations/20260924230000_fix_affiliate_cron_url.sql b/supabase/migrations/20260924230000_fix_affiliate_cron_url.sql
new file mode 100644
index 00000000..08357d18
--- /dev/null
+++ b/supabase/migrations/20260924230000_fix_affiliate_cron_url.sql
@@ -0,0 +1,56 @@
+-- Fix the crawlproof-affiliate cron job, which has never once run.
+--
+-- 20260913120000_openaffiliate.sql scheduled it with
+--   url := current_setting('app.site_url', true) || '/api/cron/affiliate'
+-- which is the pattern 20260515090000_cron_config.sql had already removed
+-- four months earlier, for exactly the reason its header describes: the
+-- app.* GUCs can only be set by supabase_admin, migrations run as `postgres`,
+-- so they are never populated. current_setting(..., true) then returns NULL,
+-- `NULL || '/api/cron/affiliate'` is NULL, and pg_net rejects the row with
+--   null value in column "url" of relation "http_request_queue"
+--   violates not-null constraint
+--
+-- It fails silently in the sense that matters: `cron.job_run_details` is the
+-- only place it shows up, nothing alerts on it, and every other job is green.
+-- Found on 2026-09-24 while auditing the ten jobs after the move to dev2 —
+-- the Supabase cloud project had been failing this same job hourly since
+-- 2026-09-13, so the migration to self-hosting reproduced it rather than
+-- causing it.
+--
+-- Fixed the same way the 2026-05 migration fixed the others: read the values
+-- from public.cron_config. Deliberately NOT by setting the GUCs — a
+-- database-level setting is invisible to pg_dump, so it would be lost by the
+-- next migration and this would come back a third time.
+--
+-- cron.schedule() upserts by job name, so this is idempotent and safe to
+-- re-run.
+
+select cron.schedule(
+  'crawlproof-affiliate',
+  '23 * * * *',
+  $cron$
+  select net.http_post(
+    url := (select value from public.cron_config where key = 'site_url') || '/api/cron/affiliate',
+    headers := jsonb_build_object(
+      'content-type', 'application/json',
+      'x-cron-secret', (select value from public.cron_config where key = 'cron_secret')
+    ),
+    body := '{}'::jsonb
+  );
+  $cron$
+);
+
+-- Guard: fail the migration loudly if cron_config cannot actually build the
+-- URL, rather than scheduling another job that dies hourly in silence.
+do $$
+declare u text;
+begin
+  select (select value from public.cron_config where key = 'site_url') || '/api/cron/affiliate' into u;
+  if u is null then
+    raise exception 'cron_config.site_url is missing — crawlproof-affiliate would post to a NULL url again';
+  end if;
+  if (select value from public.cron_config where key = 'cron_secret') is null then
+    raise exception 'cron_config.cron_secret is missing — the affiliate route would reject every call with 401';
+  end if;
+  raise notice 'crawlproof-affiliate will post to %', u;
+end $$;