If you're building System.Callable classes for Salesforce Industries (OmniStudio/Vlocity), this enforces the contract discipline that keeps integrations from breaking. It knows the difference between vanilla Callable patterns and the legacy VlocityOpenInterface signature (methodName, inputMap, outputMap, options), which matters when you're migrating or need dual compatibility. The 120-point scoring rubric covers action dispatch safety, CRUD/FLS, bulkification, and response envelope consistency. Use it when wiring Apex to Integration Procedures, DataRaptors, or other OmniStudio extension points. It won't help with the OmniScript or Integration Procedure authoring itself, just the Apex side of the callable contract.
npx skills add https://github.com/jaganpro/sf-skills --skill sf-industry-commoncore-callable-apex