Supabase RLS Policy Review SKILL.md skillA
Supabase RLS Policy Review from s977043/river-review is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add s977043/river-review/Supabase RLS Policy Review@v0.1.0Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- s977043/river-review
- Path
skills/midstream/supabase-rls-policy/SKILL.md- Versions recorded
- 2
- Latest version
- v0.1.0, committed Jun 29, 2026
- First version recorded
- Jun 29, 2026
- Size
- 3,767 bytes
- Repository stars
- 7
- License
- MIT
Detects tables created without ROW LEVEL SECURITY enabled, over-permissive policies (USING (true) / WITH CHECK (true) without owner conditions), and service_role key exposure in client code.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
## Pattern declaration Primary pattern: Reviewer Secondary patterns: Inversion Why: Supabase RLS の未有効化・過剰 policy・service_role 露出をチェックリスト型で検査する ## Goal / 目的 - `ENABLE ROW LEVEL SECURITY` 無しで public スキーマにテーブルを公開する RLS 未有効化を検出する。 - `USING (true)` / `WITH CHECK (true)` で全行アクセスを許可し所有者条件（`auth.uid() = user_id`）を欠く過剰 policy を検出する。 - `service_role` key（anon key と区別）がフロントエンドコードにハードコードされる露出を検出する。 ## Non-goals / 扱わないこと - インデックス・クエリ性能設計。 - migration の冪等性・ロールバック設計。 - policy の粒度（テーブル分割方針）の良し悪し（要件依存のため一律指摘しない）。 ## Pre-execution Gate / 実行前ゲート このスキルは以下の条件が**すべて**満たされない限り`NO_REVIEW`を返す。 - [ ] 差分に `CREATE TABLE` / `CREATE POLICY` / RLS 設定を含む SQL、または `supabase/**` のクライアントコード変更が含まれている - [ ] diff コンテキストが利用可能である ゲート不成立時の出力: `NO_REVIEW: supabase-rls-policy — RLS / policy / key の変更なし` ## False-positive guards / 抑制条件 - 公開参照テーブル（マスタデータ等）で `USING (true)` の **SELECT policy** が要件上正当であり、その旨のコメントが明記されている場合は指摘しない（INSERT / UPDATE / DELETE の `true` は別途指摘する）。 - **anon key のクライアント使用は公式仕様**で正当。`service_role` key と混同して誤検出しない。 - emulator / seed / test 用の SQL（ローカル専用）は別スコープのため指摘しない。 ## Rule / ルール - public スキーマのテーブル作成は `ALTER TABLE ... ENABLE ROW LEVEL SECURITY;` を必須とする（RLS 無効のまま公開しない）。 …
Read the whole file at its exact version.
How to install
mdr add s977043/river-review/Supabase RLS Policy Review@sha256:2fe9a09ee4aa167eThe line at the top of this page pins the label v0.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3x4lrgl2hcxyw3xk)
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Versions
The registry has recorded 2 versions of this file, all committed on Jun 29, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.1.0 latest | 2026-06-29 | 45e66bc | 3,767 B | A | view · diff |
| v0.1.0 | 2026-06-29 | b988700 | 3,784 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3767 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
s977043/river-review · 7 stars · license MIT · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3x4lrgl2hcxyw3xk GET https://markdownregistry.com/api/v1/resolve?ref=s977043/river-review/Supabase RLS Policy Review GET https://markdownregistry.com/api/v1/blob/2fe9a09ee4aa167e1594d97dc701f63d643581a8e7d5b1b6f6c74814bd7e322b
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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