error-handler-checker

What problem does it solve?

Unhandled or mishandled error paths in code are a leading cause of silent production failures, data corruption, and hard-to-debug outages that often go unnoticed until they impact end users. This Skill eliminates that risk by systematically auditing code for error handling anti-patterns before code is shipped to production.

Core Features & Use Cases

• Multi-Language Error Audit: Scans Python, TypeScript, C#, Java, C, C++, and SQL code for 13 distinct error handling anti-patterns including empty catch blocks, broad exception handling, lost error context, and unhandled async errors.
• 2026 Best Practice Enforcement: Aligns all findings with modern error handling standards including RFC 9457 for HTTP API error responses, structured logging requirements, proper error cause chaining, and clear differentiation between operational and programmer errors.
• Use Case Example: A team building a payment processing service can use this Skill to catch bare except blocks that swallow card decline errors, preventing partial-success transactions that are incorrectly marked as successful charges.

Quick Start

Use the error-handler-checker skill to audit all error handling logic in your payment service codebase for unhandled exceptions, missing fallbacks, and anti-patterns that could cause silent production failures.