It was discovered Oct 8 2025 around noon UTC that collections were not working as expected in the CX dashboard.
Upon closer inspection, it looks like some recommendation api instances have their collection cache filed and some don't.
Based on a test deployment to staging, it looks like the calls from the rec-api to mediawiki are refused by the `localhost:6500` proxy. ([[ https://logstash.wikimedia.org/app/discover#/doc/0fade920-6712-11eb-8327-370b46f9e7a5/ecs-ml-1-1.11.0-7-2025.41?id=FO2TyZkBby8j7FoV1kEy | example ]])
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**Derived Requirement**
All rec-api hosts must successfully retrieve and serve collection data to the CX dashboard. Calls from the recommendation API to MediaWiki must not be blocked or refused by the localhost:6500 proxy. Each rec-api instance must have a functioning and populated collection cache so that collection-based recommendations consistently load for all users.
====Test Steps
**Test Case 1: Verify rec-api Host Serves Collection Data**
1. Directly query a rec-api host endpoint that returns collection data (staging or beta).
2. Observe the response payload.
3. ✅❓❌⬜ **AC1:** Confirm that the rec-api host returns populated collection data rather than empty or missing results.