application-security-testing SKILL.md skillA

application-security-testing from usestrix/strix is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add usestrix/strix/application-security-testing@git:20260901.42baa7c

Pins git:20260901.42baa7c in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
usestrix/strix
Path
skills/application-security-testing/SKILL.md
Versions recorded
2
Latest version
git:20260901.42baa7c, committed Sep 1, 2026
First version recorded
Aug 20, 2026
Size
4,557 bytes
Repository stars
74,096
License
Apache-2.0

Application security testing (AppSec) across a whole product with Strix — decide which asset needs which test (source code, running web app, API, CI pipeline), run it, and turn the results into a ranked remediation plan. Autonomous agents exploit and prove each issue instead of emitting static-analysis alerts, so the plan is ordered by what is actually reachable. Use when the user asks for an application security review or audit, an appsec assessment, vulnerability scanning across their stack…

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

# Application security testing

Entry point for "make my application secure" requests, where the target is not yet a single URL or repo. The job here is to pick the right test per asset, run it, and produce one ranked plan — not to run everything at maximum depth.

Install, LLM setup, all CLI flags, and the managed-cloud path live in the **penetration-testing-with-strix** skill. Read it first if `strix --version` fails. For a run with no Docker and no LLM key, the same binary drives the managed platform: `strix cloud login`, then `strix cloud scans start ...` (details in **managed-pentesting-with-strix**).

Only test assets the user owns or is authorized to test. Confirm authorization before the first run, and prefer staging over production, because the agents send real exploit payloads and can change data.

## 1. Map the assets

Ask (or read from the repo) and write the answers down before scanning:

- **Source** — one repo, a monorepo, several services? Which languages/frameworks?
- **Running environments** — is there a staging deployment? A public production site? A local dev server only?
- **APIs** — REST, GraphQL, gRPC? Is there an OpenAPI/GraphQL schema?
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add usestrix/strix/application-security-testing@sha256:b3041c800a9a1d34

The line at the top of this page pins the label git:20260901.42baa7c, 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_2jgiug62hlfzvyxd.svg)](https://markdownregistry.com/a/art_2jgiug62hlfzvyxd)

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

Versions

The registry has recorded 2 versions of this file, between Aug 20, 2026 and Sep 1, 2026, about one every 12 days.

versioncommittedcommitsizeaudit
git:20260901.42baa7c latest2026-09-01 42baa7c 4,557 BA view · diff
git:20260820.90997102026-08-20 9099710 4,367 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 (4557 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

usestrix/strix · 74,096 stars · license Apache-2.0 · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2jgiug62hlfzvyxd
GET https://markdownregistry.com/api/v1/resolve?ref=usestrix/strix/application-security-testing
GET https://markdownregistry.com/api/v1/blob/b3041c800a9a1d34e04164c5f700b6d12bbc237f098d760c09ec076c92d2a654

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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