Detect Business Logic Abuse
Detection and hardening methodology for business logic abuse in web and API applications: workflow/state-machine bypass (skipping payment or approval steps) and pricing abuse (client-side price tampering, coupon cracking, discount stacking, refund and inventory-hold abuse). Requests are individually valid, so no payload signature fires; the skill teaches session-journey reconstruction, server-vs-client price reconciliation, and redemption-velocity baselining. Maps to MITRE ATT&CK T1190 and T1499, plus OWASP API Security Top 10 2023 API6 and OWASP Automated Threats (OAT). Log sources: application access logs (nginx/Apache, ALB/CloudFront), API gateway, WAF, and application transaction/audit logs. Use when investigating coupon or promo abuse, checkout or price manipulation, orders that skip payment, bonus or referral farming, inventory hold abuse, or building workflow-bypass and pricing-abuse detections for an e-commerce or SaaS app.
Security AStatic scan found no risk patternsHow grading works ›
What this skill does
Detect Business Logic Abuse is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/detect-business-logic-abuse/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when investigating coupon or promo abuse, checkout or price manipulation, orders that skip payment, bonus or referral farming, inventory hold abuse, or building workflow-bypass and pricing-abuse detections for an e-commerce or SaaS app.
Who uses this skill
The Detect Business Logic Abuse Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 211,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/detect-business-logic-abuse
curl -L https://claudskills.com/skills/detect-business-logic-abuse/SKILL.md \
-o ~/.claude/skills/detect-business-logic-abuse/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/detect-business-logic-abuse/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/detect-business-logic-abuse/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\detect-business-logic-abuse\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Detect Business Logic Abuse Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/detect-business-logic-abuse/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Detect Business Logic Abuse skill do?
Detection and hardening methodology for business logic abuse in web and API applications: workflow/state-machine bypass (skipping payment or approval steps) and pricing abuse (client-side price tampering, coupon cracking, discount stacking, refund and inventory-hold abuse). Requests are individually valid, so no payload signature fires; the skill teaches session-journey reconstruction, server-vs-client price reconciliation, and redemption-velocity baselining. Maps to MITRE ATT&CK T1190 and T1499, plus OWASP API Security Top 10 2023 API6 and OWASP Automated Threats (OAT). Log sources: application access logs (nginx/Apache, ALB/CloudFront), API gateway, WAF, and application transaction/audit logs. Use when investigating coupon or promo abuse, checkout or price manipulation, orders that skip payment, bonus or referral farming, inventory hold abuse, or building workflow-bypass and pricing-abuse detections for an e-commerce or SaaS app.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Detect Business Logic Abuse skill?
Use Detect Business Logic Abuse when your Claude Code task falls under the Security category — specifically in the web security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Detect Business Logic Abuse" or describe the task and let Claude pick). Browse related skills at
/category/security/.
What is a Claude Code skill and how does the Detect Business Logic Abuse skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Detect Business Logic Abuse is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
umbrasec-labs. (2026). Detect Business Logic Abuse [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/detect-business-logic-abuse/
BibTeX
@misc{detect-business-logic-abuse-2026,
author = {umbrasec-labs},
title = {Detect Business Logic Abuse [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/detect-business-logic-abuse/}
}Embed this skill
Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →
Badge
[](https://claudskills.com/skills/detect-business-logic-abuse/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/detect-business-logic-abuse.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/detect-business-logic-abuse.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: Detect Business Logic Abuse"></iframe>
Security scan
Grade A · scanned 2026-10-25 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/detect-business-logic-abuse/#security)
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