Trust Boundaries & Authorization Architecture SKILL.md skillA

Trust Boundaries & Authorization Architecture from s977043/river-review is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add s977043/river-review/Trust Boundaries & Authorization Architecture@v0.1.0

Pins 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/upstream/trust-boundaries-authz/SKILL.md
Versions recorded
3
Latest version
v0.1.0, committed Jul 19, 2026
First version recorded
Jun 29, 2026
Size
4,616 bytes
Repository stars
7
License
MIT

Ensure designs define trust boundaries, authn/authz responsibilities, and propagation of identity/claims across services.

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: 信頼境界・認可設計はチェックリスト型評価が主だが、セキュリティ設計無関係の差分では実行を止めるゲートが必要

## Goal / 目的

- 設計差分から、信頼境界(trust boundary)と認証/認可(authn/authz)の責務が曖昧なまま実装に入るリスクを減らす。

## Non-goals / 扱わないこと

- 具体プロダクトやクラウドの “正解構成” の押し付け。
- 実装コードの脆弱性レビュー(設計上の責務/契約のレビューに限定)。

## 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。

- [ ] 差分にセキュリティ設計・認証/認可・信頼境界に関連するドキュメント変更が含まれている
- [ ] 誤字・リンク更新のみの変更ではない
- [ ] inputContextにdiffが含まれている

ゲート不成立時の出力: `NO_REVIEW: trust-boundaries-authz — 信頼境界・認可設計に関連する変更が検出されない`

## False-positive guards / 抑制条件

- 参照先(セキュリティ設計書/権限仕様)ですでに明確で、差分が参照更新のみの場合は重複指摘しない。

## Rule / ルール

- 先頭に要約を 1 行出す(新規/変更された境界、主体、権限の要点)。
- 指摘は最大 8 件まで。`[severity=critical]` は “権限漏れ/越境の温床” に限定する。
- 質問だけで終わらせず、可能なら “追記案(貼れる形)” を付ける。

## Checklist / 観点チェックリスト

- Trust boundary
  - どこが信頼境界か(外部→内部、サービス間、ネットワーク境界)が明示されているか。
  - 境界を跨ぐときに “何を信頼できる/できない” かが書かれているか。
- Authn/Authz の責務
  - 認証(authn)と認可(authz)を “どこで” 判定するかが明示されているか。
  - Gateway/BFF/各サービスの責務分担(中央集約か分散か)が明記されているか。
- Identity/Claims の伝播
  - ユーザーID/tenantId/role/scope などの claims をどの形で伝播するか(token/headers/mtls 等)があるか。
  - 伝播情報の検証(署名/改ざん防止)と、サービス側での再検証の方針があるか。
- 監査と特権操作
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add s977043/river-review/Trust Boundaries & Authorization Architecture@sha256:918ce9f615c6cddc

The 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_tyr2ezgprb4ddcg4.svg)](https://markdownregistry.com/a/art_tyr2ezgprb4ddcg4)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Jun 29, 2026 and Jul 19, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
v0.1.0 latest2026-07-19 6e21e08 4,616 BA view · diff
v0.1.02026-06-29 45e66bc 4,633 BA view · diff
v0.1.02026-06-29 b988700 4,649 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4616 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

GitHub

s977043/river-review · 7 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_tyr2ezgprb4ddcg4
GET https://markdownregistry.com/api/v1/resolve?ref=s977043/river-review/Trust Boundaries & Authorization Architecture
GET https://markdownregistry.com/api/v1/blob/918ce9f615c6cddcc382e6839ec12db1d4077aaf86568151546eb4bd8a25c5ea

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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