API Downloading, Verification, and Diffing

Use this skill when you need evidence about the actual public API surface of a .NET build.

This is primarily for:

• confirming whether an API really shipped in the build binaries/ref packs
• catching reverts or incomplete rollouts before they end up in release notes
• generating before/after API diffs for a release milestone

Preferred workflow

1. Query the right build first

Do not trust the locally installed SDK for preview work. Query the target build's packages directly.

Use the process in api-verification.md: