Vonage

Add a new endpoint, use case, or product to the Vonage .NET SDK. Use this skill when the user asks to "implement an endpoint", "add a new API", "add a new use case", "scaffold [Action] for [Product]", "add [Product] to the SDK", or anything that extends the public surface of the SDK with a new HTTP call. Covers screaming architecture layout, TDD with the four-file test structure (E2E / Request / RequestBuilder / Serialization), monadic Result/Maybe flow, source-generated builders with `[Builder]`/`[Mandatory]`/`[Optional]`, input validation, and the XML documentation bar.

Improve XML documentation in the Vonage .NET SDK. Use when the user mentions "improve XML docs", "document [namespace]", "XML documentation", "add missing docs", or references documenting C# classes, properties, enums, or interfaces in this SDK. Covers IntelliSense summaries, OAS-based constraints, code examples, and builder struct documentation.

Idiomatic Golang error handling — creation, wrapping with %w, errors.Is/As, errors.Join, custom error types, sentinel errors, panic/recover, the single handling rule, structured logging with slog, HTTP request logging middleware, and samber/oops for production errors. Built to make logs usable at scale with log aggregation 3rd-party tools. Apply when creating, wrapping, inspecting, or logging errors in Go code.