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Agent skill

Engine Whats New

by flutter in flutter/flutter

Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44).

BSD-3-ClauseAuto-check passedMobile

Install Engine Whats New

skills CLI
$ npx skills add flutter/flutter --skill engine-whats-new -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install flutter/flutter engine-whats-new --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/flutter/flutter.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/engine-whats-new .claude/skills/engine-whats-new && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
engine-whats-new
GitHub stars
179k
Token cost
~978 tokens
SKILL.md length
339 words
Files
3 (incl. scripts)
Skills in repo
14
Repo updated
First seen
Licence
BSD-3-Clause

At a glance

Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44).

  • Works in 3 steps: Identify Inputs → Run the Generator Tool → Review Generated Artifacts & Present to…
  • General questions about commits
  • SKILL.md covers Workflow and Examples
  • Runs Dart scripts from its folder; calls dart

What it does

Engine Whats New is an agent skill from flutter/flutter. Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44). When to use: - Only activate when explicitly asked by the user to generate what's new in the engine, diff Flutter engine releases, or produce an engine release summary. When not to use: - Do not use for general questions about commits, individual file history, or codebase searches unless explicitly requested to generate the engine release diff or summary.

Its SKILL.md is about 980 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including scripts (for example `scripts/README.md`).

It sits in Mobile, covering Cross-platform mobile apps and Changelog and release notes. It works with Flutter, Dart, Android and iOS. The repository describes itself as: Flutter makes it easy and fast to build beautiful apps for mobile and beyond. The licence is BSD-3-Clause.

When your agent uses it

  • General questions about commits
  • Individual file history
  • Codebase searches unless explicitly requested to generate the engine release diff

Example prompts

  • “Use the engine-whats-new skill to generate the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter)…”
  • “/engine-whats-new”

Workflow steps

3 steps, taken from the step headings in SKILL.md.

  1. Identify Inputs
  2. Run the Generator Tool
  3. Review Generated Artifacts & Present to User

What it can do on your machine

Read from SKILL.md and the folder at commit 8679894. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 2 files in scripts/ (Dart), which the agent can run.

    Shell commands in SKILL.md call:

    • dart

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Engine Whats New loads about 978 tokens when it runs. Until then it costs about 133 tokens; SKILL.md has 339 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~133
When it runs · the whole SKILL.md, loaded when a task matches
~978

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from flutter/flutter at commit 8679894, republished under its BSD-3-Clause licence (© flutter). 339 words, ~978 tokens.

Download SKILL.mdSave it as .claude/skills/engine-whats-new/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
engine-whats-new
description
Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44). When to use: - Only activate when explicitly asked by the user to generate what's new in the engine, diff Flutter engine releases, or produce an engine release summary. When not to use: - Do not use for general questions about commits, individual file history, or codebase searches unless explicitly requested to generate the engine release diff or summary.

Flutter Engine What's New & Diff Skill

Workflow

1. Identify Inputs

Extract the following from the user's request:

  • Target Release (<TARGET_RELEASE>): The Flutter release version to analyze (e.g., 3.47, 3.47.0, or flutter-3.47-candidate.0).
  • Base Release (<BASE_RELEASE>): Optional. The prior Flutter release to compare against (e.g., 3.44). If omitted by the user, the script will automatically calculate the predecessor release (e.g., for 3.47 it automatically selects 3.44).
2. Run the Generator Tool

Execute the Dart script from the Flutter repository root:

bash
dart .agents/skills/engine-whats-new/scripts/generate_engine_whats_new.dart --release <TARGET_RELEASE>

If the user specifies a custom base release or output paths:

bash
dart .agents/skills/engine-whats-new/scripts/generate_engine_whats_new.dart --release <TARGET_RELEASE> --from <BASE_RELEASE> --output-diff engine_diff_<BASE_RELEASE>_to_<TARGET_RELEASE>.diff --output-summary engine_whats_new_<TARGET_RELEASE>.md

To output structured JSON for programmatic consumption:

bash
dart .agents/skills/engine-whats-new/scripts/generate_engine_whats_new.dart --release <TARGET_RELEASE> --format json
3. Review Generated Artifacts & Present to User

The tool produces two primary artifacts in the repository root:

  1. Diff File (engine_diff_<BASE_RELEASE>_to_<TARGET_RELEASE>.diff): The full unified git diff of all changes in //engine/src/flutter between the two releases.
  2. Summary Document (engine_whats_new_<TARGET_RELEASE>.md): A categorized Markdown summary covering:
    • Overview & Statistics: Total engine commits, files changed, additions, and deletions.
    • 🚀 Impeller & Graphics Rendering: Vulkan, Metal, OpenGL, shaders, and display list updates.
    • 🌐 Web Engine & Wasm: Web SDK, CanvasKit, and WebAssembly changes.
    • 📱 Android Embedding: Gradle/AGP updates, Android view rendering, and Java/Kotlin embedding changes.
    • 🍎 iOS & macOS Embeddings: Darwin platform view lifecycle, Metal views, and macOS/iOS updates.
    • 🪟 Windows & Linux Desktop Embeddings: Win32 compositor, Linux GTK embedding, and desktop shell fixes.
    • 🔤 Text, Typography & Accessibility: Semantics, IME, font fallback, and text layout improvements.
    • 🔄 Dependency Rolls: Skia, Dart SDK, ICU, HarfBuzz, and ANGLE rolls.
    • 🛠️ Build System, CI & Tooling: GN build files, luci scripts, and testing utilities.

Provide the user with a concise overview of the results and links to the generated diff and markdown summary files.

Examples

  • User: "Generate what's new in the engine for Flutter 3.47."

  • Agent:

    1. Identifies target release 3.47.
    2. Runs dart .agents/skills/engine-whats-new/scripts/generate_engine_whats_new.dart --release 3.47.
    3. Reports the summary statistics (e.g., 354 commits, 1179 files changed) and shares the generated engine_diff_3.44_to_3.47.diff and engine_whats_new_3.47.md.

  • User: "Diff the engine changes between Flutter 3.41 and 3.44."

  • Agent:

    1. Identifies base release 3.41 and target release 3.44.
    2. Runs dart .agents/skills/engine-whats-new/scripts/generate_engine_whats_new.dart --from 3.41 --to 3.44.
    3. Presents the breakdown of engine changes and the diff file.

© flutter, BSD-3-Clause. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (scripts) in .agents/skills/engine-whats-new of flutter/flutter.

  • SKILL.md
  • scripts/README.md
  • scripts/generate_engine_whats_new.dart

Open the folder on GitHubat commit 8679894

Compare with similar skills

Engine Whats New next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Engine Whats New compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Engine Whats New this skillflutter/flutter179k—~978Automated safety check: PassBSD-3-Clause
flutter_soloud Setupalnitak/flutter_soloud424—~3.6kAutomated safety check: NotesMIT
Fkit SetupJoker-x-dev/FlutterKit127—~720Automated safety check: PassMIT
Flutter Embedding Native Viewsbtwld/superdeck130—~2.1kAutomated safety check: PassBSD-3-Clause
Sentry Flutter SDKgetsentry/sentry-for-ai268—~7.1kAutomated safety check: PassApache-2.0
OdevioOdevio/Odevio-CLI423—~7.6kAutomated safety check: PassMIT

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Works with

Categories

Questions about Engine Whats New

What does Engine Whats New do?

Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44). Engine Whats New is an agent skill from flutter/flutter.44).

When should I use Engine Whats New?

Engine Whats New fits situations like: general questions about commits; individual file history; codebase searches unless explicitly requested to generate the engine release diff.

How do I install Engine Whats New in Claude Code?

Run `npx skills add flutter/flutter --skill engine-whats-new -a claude-code`. Or copy the skill folder (.agents/skills/engine-whats-new in flutter/flutter) into .claude/skills/engine-whats-new in your project. Claude Code loads it when a task matches its description.

How do I install Engine Whats New in Codex?

Run `npx skills add flutter/flutter --skill engine-whats-new -a codex`. Or copy the skill folder (.agents/skills/engine-whats-new in flutter/flutter) into .agents/skills/engine-whats-new in your project. Codex loads it when a task matches its description.

Can I use Engine Whats New in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add flutter/flutter --skill engine-whats-new -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/engine-whats-new, .gemini/skills/engine-whats-new, .github/skills/engine-whats-new and .opencode/skills/engine-whats-new in your project.

What does Engine Whats New need to run?

Going by SKILL.md and its folder, Engine Whats New needs Dart for the scripts in its folder and the command-line tools its instructions call (dart).

Does Engine Whats New access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Engine Whats New safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Engine Whats New use?

Engine Whats New is published under the BSD-3-Clause licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Engine Whats New use?

About 978 tokens (SKILL.md is roughly 3.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Engine Whats New?

Skills that share tags, products or a category with Engine Whats New: flutter_soloud Setup (alnitak/flutter_soloud, 424 stars), Fkit Setup (Joker-x-dev/FlutterKit, 127 stars), Flutter Embedding Native Views (btwld/superdeck, 130 stars) and Sentry Flutter SDK (getsentry/sentry-for-ai, 268 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Engine Whats New?

flutter (a GitHub organization) maintains it in flutter/flutter, which has 179,369 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 8, 2026.

Source: flutter/flutter on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.