aegis-web-client SKILL.md skillB
aegis-web-client from as-foss/aegis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add as-foss/aegis-skills/aegis-web-client@git:20260826.9702747Pins git:20260826.9702747 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- as-foss/aegis-skills
- Path
skills/code/web-client/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260826.9702747, committed Aug 26, 2026
- First version recorded
- Aug 25, 2026
- Size
- 43,233 bytes
- Repository stars
- 16
- License
- Apache-2.0
Detects and remediates browser-facing web vulnerabilities including reflected, stored, and DOM-based XSS, CSRF, clickjacking, unsafe postMessage handling, client-side storage misuse, DOM clobbering, client-side open redirects, and client-side template injection across React, Vue, Angular, Svelte, jQuery/vanilla JS, and major server-template stacks.
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
## Scope & Objectives
### In Scope
- XSS in all three flavors: reflected (server echoes input), stored (input persisted then rendered to other users), DOM-based (client-side JS moves data from source to sink without a safe encoding step).
- Server-side template autoescaping bypasses (`|safe`, `mark_safe`, `{!! !!}`, `raw`, `<%-`, `@Html.Raw`, `th:utext`).
- Context-aware output-encoding review: HTML body, attributes, JS strings, URLs/hrefs, CSS.
- Mutation XSS (mXSS) triage at re-parsing sinks.
- CSP strength evaluation as a mitigating control.
- CSRF: token presence/validation across frameworks, state-changing GETs, JSON/content-type-only guards, SameSite analysis, custom-method validation gaps, login/logout CSRF.
- Clickjacking on sensitive pages via X-Frame-Options / frame-ancestors.
- Cross-origin pitfalls: postMessage handler origin/data validation; CORS-with-credentials reflection (deep config detail lives in the CONFIG module — cross-reference it, do not duplicate deeply).
- Client-side storage misuse: tokens/secrets/PII in localStorage/sessionStorage, password-field autocomplete.
…Read the whole file at its exact version.
How to install
mdr add as-foss/aegis-skills/aegis-web-client@sha256:c5bed6bb87076469The line at the top of this page pins the label git:20260826.9702747, 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_3rlow55twj77s27t)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 25, 2026 and Aug 26, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260826.9702747 latest | 2026-08-26 | 9702747 | 43,233 B | B | view · diff |
| git:20260825.85624bc | 2026-08-25 | 85624bc | 43,234 B | B | view · diff |
| git:20260825.244c198 | 2026-08-25 | 244c198 | 42,330 B | B | view |
Audit of the latest version
- fail: No script tag (matched: <script)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (43233 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
as-foss/aegis-skills · 16 stars · license Apache-2.0 · pushed 2026-08-26 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_3rlow55twj77s27t GET https://markdownregistry.com/api/v1/resolve?ref=as-foss/aegis-skills/aegis-web-client GET https://markdownregistry.com/api/v1/blob/c5bed6bb87076469b2bf6e5481eaa236c74b8361f373992012884141ac144760
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.