web-app-penetration-testing SKILL.md skillA

web-app-penetration-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/web-app-penetration-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/web-app-penetration-testing/SKILL.md
Versions recorded
3
Latest version
git:20260901.42baa7c, committed Sep 1, 2026
First version recorded
Aug 20, 2026
Size
4,320 bytes
Repository stars
74,096
License
Apache-2.0

Pentest a web app or website end to end — black-box testing of a live URL, staging environment, or local dev server that finds and exploits real vulnerabilities (auth bypass, broken access control, IDOR, injection, XSS, SSRF, business logic) and proves each one with a working proof-of-concept instead of a signature match. Runs with Strix, either the self-hosted open-source CLI or the managed app.strix.ai cloud. Use when the user asks to pentest, hack, security-test, or audit their web app…

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

# Pentest a web application

Black-box (and optionally source-assisted) penetration testing of a running web app with Strix's autonomous agents. Every reported finding is validated with a working exploit, so there are no signature-based false positives to triage.

Install, LLM setup, all CLI flags, and the managed-cloud alternative are covered in the **penetration-testing-with-strix** skill — read it if the target is not a running web app, or 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**). This skill is the web-app-specific workflow.

## 1. Confirm authorization and scope

Before running anything, establish:

- **The target is the user's** (or they are explicitly authorized to test it). Never pentest a third-party site on a hunch.
- **Which environment.** Prefer staging over production; agents send real exploit payloads and will create/modify data.
- **Out-of-scope paths** — payment flows, mass-email endpoints, admin destructive actions, third-party SSO providers.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add usestrix/strix/web-app-penetration-testing@sha256:2e8df0b9233971c4

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_s66c4dhaakfiaxac.svg)](https://markdownregistry.com/a/art_s66c4dhaakfiaxac)

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

Versions

The registry has recorded 3 versions of this file, between Aug 20, 2026 and Sep 1, 2026, about one every 6 days.

versioncommittedcommitsizeaudit
git:20260901.42baa7c latest2026-09-01 42baa7c 4,320 BA view · diff
git:20260820.90997102026-08-20 9099710 4,130 BA view · diff
git:20260820.b5ef93e2026-08-20 b5ef93e 4,128 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 (4320 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_s66c4dhaakfiaxac
GET https://markdownregistry.com/api/v1/resolve?ref=usestrix/strix/web-app-penetration-testing
GET https://markdownregistry.com/api/v1/blob/2e8df0b9233971c496d0c0c7660808fc717c08d4165455a0423229045389608a

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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