Agent skill · security · yaklang
business-logic-vuln
Entry P1 category router for business logic testing. Use when workflow abuse, race conditions, pricing flaws, or multi-step state attacks matter more than parser-level input injection.
Why this skill is useful
Provides specific patterns and checks for identifying business logic vulnerabilities that the AI wouldn't reliably generate on its own.
What it needs
About 1k tokens when loaded. Last updated 2026-06-16. 1,563 stars on the source repository.
What this skill does
Business Logic Router This is the routing entry point for business-logic and state-machine issues. When to Use The target involves coupons, inventory, payment, approvals, quotas, invites, trials, or state transitions The issue is not parser-level; it is about when checks happen and which business conditions are checked You suspect race conditions, workflow bypass, price tampering, negative values, stacked discounts, or multi-step flaws Skill Map Business Logic Vulnerabilities Recommended Flow 1. First map key business states and one-time actions 2. Then check for check-then-act windows, sequence dependencies, or missing cross-step authorization 3. If the chain depends on APIs, uploads, or object permissions, return to the corresponding router skill to complete the path Related Categories api-sec auth-sec file-access-vuln
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills yaklang/business-logic-vuln