## Context
Resolves FE-3077
Related discussion: https://github.com/orgs/supabase/discussions/45233
Verifying the correctness of your RLS policies set up has always been a
gap, as highlighted by a number of GitHub discussions like
[here](https://github.com/orgs/supabase/discussions/12269) and
[here](https://github.com/orgs/supabase/discussions/14401). As such,
we're piloting a dedicated UI for RLS testing (using role impersonation
as the base), in which you'll be able to
- Run a SQL query as a user (not logged in / logged in - this is the
role impersonation part)
- See which RLS policies are being evaluated as part of the query
- And hopefully be able to debug which policies are not set up correctly
Changes are currently set as a feature preview - and we'll iterate as we
get feedback from everyone 🙂🙏
<img width="613" height="957" alt="image"
src="https://github.com/user-attachments/assets/83c37f8a-28fc-43b3-b0ff-e28571d8710c"
/>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* RLS Tester: run queries as anon or authenticated users, view inferred
SQL, per-table policy summaries, and data previews of accessible rows.
* UI preview: new RLS Tester preview card and modal with opt-in toggle;
RLS Tester sheet with role/user selector and query editor.
* SQLEditor: “Explain” tab is always visible.
* **Chores**
* Added supporting API endpoints, background checks for table RLS
status, and a local-storage flag to persist the preview opt-in.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES
## What kind of change does this PR introduce?
This introduces a small snippet preview of the error code coming via our
content API for the docs. This appears in a couple of places right now.
- **Auth Overview** - This page isn't fully released yet, but it appears
on the error codes table (as depicted below).
- **Logs** - When you delve into the logs panel, if there's an error
code available, they're also wrapped in this popover.
We are also working on a shared-data package (#43458) to potentially
replace this endpoint internally. Also introduces a multifaceted button
to debug/fix with either Assistant or LLM of choice.
| Auth Overview | Logs Panel |
|--------|--------|
| <img width="407" height="287" alt="Screenshot 2026-03-09 at 14 14 09"
src="https://github.com/user-attachments/assets/7450dddb-6828-4cd3-802d-37d47ba1b440"
/> | <img width="394" height="216" alt="Screenshot 2026-03-09 at 14 13
56"
src="https://github.com/user-attachments/assets/80c2a46e-dbe4-4e88-a0a7-68b977a71d6b"
/> |
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Joshen Lim