Agent skill

Webapp Review

by SpecterOps in SpecterOps/skills

Web application security testing workflow and checklist generation.

Apache-2.0Auto-check passedSecurity

Install Webapp Review

skills CLI
$ npx skills add SpecterOps/skills --skill webapp-review -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install SpecterOps/skills webapp-review --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/SpecterOps/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ops-appsec/skills/webapp-review .claude/skills/webapp-review && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
webapp-review
GitHub stars
702
Token cost
~1k tokens
SKILL.md length
341 words
Files
4 (incl. assets)
Skills in repo
38
Repo updated
First seen
Licence
Apache-2.0

At a glance

Web application security testing workflow and checklist generation.

  • Works in 6 steps: Create output directory and report path → If source code exists locally, inspect… → Build checklist for selected scope (or… → …
  • Executing web app assessment steps
  • SKILL.md covers Input Parsing, Execution Policy, Workflow and Checklist Areas, plus 3 more sections
  • Calls curl

What it does

Webapp Review is an agent skill from SpecterOps/skills. Web application security testing workflow and checklist generation. Use when planning or executing web app assessment steps, including auth, API, injection, and configuration testing.

Its SKILL.md is about 1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including assets (for example `agents/openai.yaml`).

It sits in Security, covering Web application vulnerabilities. The repository describes itself as: A marketplace for LLM skills. The licence is Apache-2.0.

When your agent uses it

  • Executing web app assessment steps
  • Configuration testing

Example prompts

  • “/webapp-review”

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

  1. Create output directory and report path
  2. If source code exists locally, inspect it for framework/auth/input patterns.
  3. Build checklist for selected scope (or full set).
  4. Add concrete command suggestions for each relevant test area.
  5. If execute mode is requested
  6. Save report and provide next-step recommendations.

What it can do on your machine

Read from SKILL.md and the folder at commit e655f93. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use curl, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Webapp Review loads about 1k tokens when it runs. Until then it costs about 49 tokens; SKILL.md has 341 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~49
When it runs · the whole SKILL.md, loaded when a task matches
~1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from SpecterOps/skills at commit e655f93, republished under its Apache-2.0 licence (© SpecterOps). 341 words, ~1,014 tokens.

Download SKILL.mdSave it as .claude/skills/webapp-review/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
webapp-review
description
Web application security testing workflow and checklist generation. Use when planning or executing web app assessment steps, including auth, API, injection, and configuration testing.
metadata.author
GhostWorks

Webapp Review

Generate structured web security test plans and, when requested, execute active tests.

Input Parsing

Accept input as: TARGET [SCOPE] [MODE]

Scopes:

  • full (default)
  • auth
  • api
  • injection
  • config

Modes:

  • plan: checklist + suggested commands only
  • execute (default, preferred): run test commands

If mode is omitted, default to execute.

Examples:

  • $webapp-review https://app.example.com
  • $webapp-review https://api.example.com api
  • $webapp-review https://app.example.com full execute
  • $webapp-review auth

Execution Policy

  • Always produce a checklist and suggested commands first.
  • If mode is execute, run routine in-scope command batches autonomously.
  • Request approval only for OPSEC-dangerous command batches.
  • Before OPSEC-dangerous active tests, provide short OPSEC warning (noise + detection surfaces).

Workflow

  1. Create output directory and report path:
    • mkdir -p recon/
    • report: recon/webapp-<target-slugified>.md
  2. If source code exists locally, inspect it for framework/auth/input patterns.
  3. Build checklist for selected scope (or full set).
  4. Add concrete command suggestions for each relevant test area.
  5. If execute mode is requested:
    • run routine in-scope commands autonomously,
    • request approval only for OPSEC-dangerous steps,
    • capture and summarize outputs in the report.
  6. Save report and provide next-step recommendations.

Checklist Areas

Authentication and Session
  • default/weak credentials
  • brute-force protections and lockout
  • session fixation/timeout/invalidation
  • JWT validation weaknesses
  • OAuth/OIDC misconfiguration
  • MFA bypass paths
Authorization
  • IDOR (horizontal access)
  • vertical privilege escalation
  • function-level authorization gaps
  • parameter tampering and role abuse
  • API authorization consistency
Injection
  • SQL/NoSQL injection
  • command injection
  • SSTI
  • LDAP/XPath injection
  • header injection (CRLF)
Client-Side
  • reflected/stored/DOM XSS
  • CSP and client-side hardening gaps
  • prototype pollution opportunities
SSRF and External Interaction
  • unvalidated URL fetchers
  • metadata service access
  • webhook/callback abuse
  • internal service pivot risk
File Handling
  • unsafe upload validation
  • path traversal in file operations
  • XXE and parser abuse
  • local/remote file include patterns
Configuration and Infrastructure
  • verbose errors and stack traces
  • directory listing and debug endpoints
  • security headers and cookie flags
  • CORS policy issues
  • TLS weaknesses
Business Logic
  • race conditions and double-spend flows
  • workflow bypasses
  • mass assignment and parameter pollution
  • missing rate limits

Suggested Command Patterns

Prefer target-safe, bounded commands and annotate intent:

bash
# HTTP probe and fingerprint
curl -isk <target>

# Endpoint/content discovery
ffuf -u <target>/FUZZ -w <wordlist> -mc 200,301,302,403

# API/security template checks
nuclei -u <target> -tags cves,misconfig,exposure

# Parameter fuzzing baseline
ffuf -u '<target>?id=FUZZ' -w <payloads>

# Optional sqlmap quick triage (approval only if OPSEC-dangerous in this context)
sqlmap -u '<target>?id=1' --batch --risk=1 --level=1

Output Format

markdown
# Webapp Security Review ? <target>
## Scope: <scope>
## Mode: <plan|execute>

## Executive Summary
- High-level risk overview

## Checklist
- [ ] Item

## Suggested Commands
- command + purpose

## Executed Commands and Results
- command
- key output
- interpretation

## Prioritized Next Steps
1. next action
2. next action

Quality Rules

  • Keep findings evidence-based and reproducible.
  • Separate confirmed findings from hypotheses.
  • Include exact commands and relevant output snippets for executed tests.

© SpecterOps, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (assets) in plugins/ops-appsec/skills/webapp-review of SpecterOps/skills.

  • SKILL.md
  • agents/openai.yaml
  • assets/icon.png
  • assets/icon.svg

Open the folder on GitHubat commit e655f93

Compare with similar skills

Webapp Review next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Webapp Review compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Webapp Review this skillSpecterOps/skills702—~1kAutomated safety check: PassApache-2.0
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Security Reviewjewbetcha/opentrace11618 repos~3.1kAutomated safety check: NotesMIT
Mavenskjolber/3d-bin-container-packing568—~886Automated safety check: PassApache-2.0
Kuri Agentjustrach/kuri365—~1.3kAutomated safety check: NotesCustom licence
Code Review Securitynicepkg/auto-company1921 repos~3.9kAutomated safety check: PassMIT

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Questions about Webapp Review

What does Webapp Review do?

Web application security testing workflow and checklist generation. Webapp Review is an agent skill from SpecterOps/skills. Web application security testing workflow and checklist generation.

When should I use Webapp Review?

Webapp Review fits situations like: executing web app assessment steps; configuration testing.

How do I install Webapp Review in Claude Code?

Run `npx skills add SpecterOps/skills --skill webapp-review -a claude-code`. Or copy the skill folder (plugins/ops-appsec/skills/webapp-review in SpecterOps/skills) into .claude/skills/webapp-review in your project. Claude Code loads it when a task matches its description.

How do I install Webapp Review in Codex?

Run `npx skills add SpecterOps/skills --skill webapp-review -a codex`. Or copy the skill folder (plugins/ops-appsec/skills/webapp-review in SpecterOps/skills) into .agents/skills/webapp-review in your project. Codex loads it when a task matches its description.

Can I use Webapp Review in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add SpecterOps/skills --skill webapp-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/webapp-review, .gemini/skills/webapp-review, .github/skills/webapp-review and .opencode/skills/webapp-review in your project.

What does Webapp Review need to run?

Going by SKILL.md and its folder, Webapp Review needs the command-line tools its instructions call (curl).

Does Webapp Review access the network?

SKILL.md contains no URLs. Its commands use curl, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Webapp Review safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Webapp Review use?

Webapp Review is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Webapp Review use?

About 1k tokens (SKILL.md is roughly 4.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Webapp Review?

Skills that share tags, products or a category with Webapp Review: Security And Hardening (penpot/penpot, 61k stars), Security Review (jewbetcha/opentrace, 116 stars), Maven (skjolber/3d-bin-container-packing, 568 stars) and Kuri Agent (justrach/kuri, 365 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Webapp Review?

SpecterOps (a GitHub organization) maintains it in SpecterOps/skills, which has 702 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on September 23, 2026.

Source: SpecterOps/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.