generate-release-notes - SKILL.md Agent Skill

name: generate-release-notes description: Generate .NET SDK release notes by comparing two git branches, investigating PRs for user-facing changes, and producing a structured markdown document with contributor acknowledgments. Use this when asked to create or draft release notes for a new .NET SDK release.

Generate .NET SDK Release Notes

You are generating release notes for the .NET SDK by comparing two git branches. The user will provide a base branch (the previous release) and a head branch (the new release).

Step 1: Discover commits and PRs

Run git log --oneline --no-merges <base>..<head> -- src/ to get the list of commits unique to the head branch.
Extract PR numbers from commit messages using the pattern (#NNNNN).
Filter out noise — skip commits/PRs that are:
- Localization updates (xlf file changes only)
- Dependency version bumps from dotnet-maestro[bot] or darc
- Backflow merges between branches
- Infrastructure-only changes (CI, build scripts) unless they affect user-facing behavior
Record the remaining PR numbers as candidates for investigation.

Step 2: Investigate each PR

For each candidate PR, fetch the PR details from dotnet/sdk on GitHub:

Title and description: Understand what the PR does.
Author and author_association: Record whether the author is MEMBER, CONTRIBUTOR, or NONE.
- MEMBER = Microsoft employee or org member (has maintainer/contributor access)
- CONTRIBUTOR = has previously had a PR merged but is not a member
- NONE = first-time or external contributor
Labels: Use area labels to help categorize.
Linked issues: Follow linked issues in the PR body for specs, documentation, or upstream context.

Determine if the PR is user-facing — does it change CLI behavior, add new commands/options, add analyzers, change MSBuild properties/targets, or otherwise affect how developers use the SDK?

Skip PRs that are purely internal refactoring, test-only changes, or infrastructure fixes with no user-visible impact.

Step 3: Organize into sections

Group the user-facing changes into these four major sections:

1. CLI command improvements

Group by the specific dotnet command affected (dotnet run, dotnet test, dotnet watch, dotnet format, dotnet build, etc.). Each command gets its own ### subsection. Multiple related changes to the same command should be grouped under #### sub-headings within that command's section.

2. Code analyzers

List new or changed analyzers in a table format:

| Analyzer ID | Description | PR |
|-------------|-------------|-----|
| [CAXXXX](docs-link) | Short description | [#NNNNN](pr-link) |

3. MSBuild SDK properties and targets

New or changed MSBuild properties, items, or targets that expose new SDK capabilities. Include XML examples showing usage.

4. Other changes

Infrastructural, niche, or cross-cutting changes that don't fit the above categories but are still user-visible (e.g., encoding changes, verbosity changes).

Step 4: Write feature descriptions

For each feature, write a concise description that includes:

What changed: A clear explanation of the new behavior.
Why it matters: The user scenario or pain point this addresses.
How to use it: Code examples, CLI invocations, or MSBuild XML snippets as appropriate.
Links: Link to the PR, and if available, link to specs (check documentation/specs/ in the repo), linked issues, or documentation.

Step 5: Contributor acknowledgments

Inline thanks

For each listed feature where the PR author's author_association is NOT MEMBER (i.e., the contributor does not have maintainer/contributor org access to the SDK repo), add a thank-you line in that feature's section:

Thank you to [@username](https://github.com/username) for this community contribution!

Community contributors section

At the bottom of the document, add a ## Community contributors section listing ALL non-member commit authors from the branch diff (not just featured PR authors). To build this list:

Run git log --no-merges --format="%an|%ae" <base>..<head> -- src/ to get all commit authors.
For each unique author, look up their GitHub username (from noreply email or by fetching the commit from GitHub).
Check their author_association on a PR they authored in dotnet/sdk — exclude MEMBER authors.
Also exclude bots (dotnet-maestro[bot], github-actions[bot], Copilot).
List the remaining community contributors alphabetically by GitHub username.

Step 6: Final document structure

# .NET SDK in .NET <version> - Release Notes

<Intro paragraph>

<Table of contents with nested bullets>

## CLI command improvements
### `dotnet <command>`: Feature title
...

## Code analyzers
### New analyzers
| table |

## New .NET SDK capabilities
### Feature title
...

## Other changes
### Feature title
...

## Community contributors
- [@username](link)
...

.NET SDK updates in .NET <version>:
- [What's new in .NET <version>](docs-link) documentation

Output

Create the release notes as a markdown file at documentation/release-notes/ in the repo. Commit it on a new branch named dev/<user>/release-notes-<version>.