Official agent skill

Update Expected App Size

by dotnet in dotnet/macios

Download updated expected app size files from Azure DevOps CI artifacts for the current branch.

OfficialCustom licenceAuto-check passedMobile

Install Update Expected App Size

skills CLI
$ npx skills add dotnet/macios --skill update-expected-app-size -a claude-code

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

GitHub CLI
$ gh skill install dotnet/macios update-expected-app-size --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/dotnet/macios.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/update-expected-app-size .claude/skills/update-expected-app-size && 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
update-expected-app-size
GitHub stars
2.9k
Token cost
~1.5k tokens
SKILL.md length
547 words
Files
1
Skills in repo
9
Repo updated
First seen
Licence
Custom licence

At a glance

Download updated expected app size files from Azure DevOps CI artifacts for the current branch.

  • Works in 5 steps: Determine the current branch and PR → Find the Azure DevOps build → Download the artifacts → …
  • App size tests fail in CI and the user wants to update the expected files locally
  • SKILL.md covers When to Use, Background, Workflow and Fallback: Manual Download, plus 1 more section
  • Calls git, curl and gh; reaches devdiv.visualstudio.com

What it does

Update Expected App Size is an agent skill from dotnet/macios, published by the product's own GitHub organization. Download updated expected app size files from Azure DevOps CI artifacts for the current branch. Use when app size tests fail in CI and the user wants to update the expected files locally. Trigger on "update app size", "download expected files", "fix app size test", or "update expected app size files".

Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile, covering Mobile performance. It works with .NET, Azure DevOps, C# and iOS. The repository describes itself as: .NET for iOS, Mac Catalyst, macOS, and tvOS provide open-source bindings of the Apple SDKs for use with .NET managed languages such as C.

When your agent uses it

  • App size tests fail in CI and the user wants to update the expected files locally
  • Update app size
  • Download expected files
  • Fix app size test

Example prompts

  • “update app size”
  • “download expected files”
  • “fix app size test”
  • “/update-expected-app-size”

Requirements

  • Python 3

Workflow steps

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

  1. Determine the current branch and PR
  2. Find the Azure DevOps build
  3. Download the artifacts
  4. Place the files
  5. Verify and commit

What it can do on your machine

Read from SKILL.md and the folder at commit 354c2a6. 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

    Shell commands in SKILL.md call:

    • git
    • curl
    • gh
    • az
    • python3

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

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • devdiv.visualstudio.com

    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

Update Expected App Size loads about 1.5k tokens when it runs. Until then it costs about 82 tokens; SKILL.md has 547 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~82
When it runs · the whole SKILL.md, loaded when a task matches
~1.5k

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); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 547 words (~1,483 tokens).

“Download updated expected app size files from Azure DevOps artifacts for the current branch's PR build, and apply them to the repository.”

— opening of SKILL.md by dotnet, Custom licence
name
update-expected-app-size

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .github/skills/update-expected-app-size of dotnet/macios.

Open the folder on GitHubat commit 354c2a6

Compare with similar skills

Update Expected App Size 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.

Update Expected App Size compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Update Expected App Size this skilldotnet/macios2.9k—~1.5kAutomated safety check: PassCustom licence
Maui Safe Areadotnet/skills5.6k1 repos~3.2kAutomated safety check: PassMIT
Mobile Developmentjame581/GodotPrompter792—~3.3kAutomated safety check: PassMIT
Sokol Netelix22/Sokol.NET154—~2.8kAutomated safety check: PassMIT
Apple Crash Log .NET Symbolicationdotnet/skills5.6k1 repos~2.4kAutomated safety check: PassMIT
Run Maui Apptig/winprint101—~1.2kAutomated safety check: PassMIT

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Categories

Questions about Update Expected App Size

What does Update Expected App Size do?

Download updated expected app size files from Azure DevOps CI artifacts for the current branch. Update Expected App Size is an agent skill from dotnet/macios, published by the product's own GitHub organization. Download updated expected app size files from Azure DevOps CI artifacts for the current branch.

When should I use Update Expected App Size?

Update Expected App Size fits situations like: app size tests fail in CI and the user wants to update the expected files locally; update app size; download expected files; fix app size test.

How do I install Update Expected App Size in Claude Code?

Run `npx skills add dotnet/macios --skill update-expected-app-size -a claude-code`. Or copy the skill folder (.github/skills/update-expected-app-size in dotnet/macios) into .claude/skills/update-expected-app-size in your project. Claude Code loads it when a task matches its description.

How do I install Update Expected App Size in Codex?

Run `npx skills add dotnet/macios --skill update-expected-app-size -a codex`. Or copy the skill folder (.github/skills/update-expected-app-size in dotnet/macios) into .agents/skills/update-expected-app-size in your project. Codex loads it when a task matches its description.

Can I use Update Expected App Size 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 dotnet/macios --skill update-expected-app-size -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/update-expected-app-size, .gemini/skills/update-expected-app-size, .github/skills/update-expected-app-size and .opencode/skills/update-expected-app-size in your project.

What does Update Expected App Size need to run?

Going by SKILL.md and its folder, Update Expected App Size needs the command-line tools its instructions call (git, curl, gh, az and python3). Our summary lists: Python 3.

Does Update Expected App Size access the network?

SKILL.md names 1 domain. In commands or code: devdiv.visualstudio.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Update Expected App Size 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. Review the folder before installing.

What licence does Update Expected App Size use?

Update Expected App Size has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Update Expected App Size use?

About 1.5k tokens (SKILL.md is roughly 5.9k 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 Update Expected App Size?

Skills that share tags, products or a category with Update Expected App Size: Maui Safe Area (dotnet/skills, 5.6k stars), Mobile Development (jame581/GodotPrompter, 792 stars), Sokol Net (elix22/Sokol.NET, 154 stars) and Apple Crash Log .NET Symbolication (dotnet/skills, 5.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Update Expected App Size?

dotnet (a GitHub organization, an official publisher) maintains it in dotnet/macios, which has 2,906 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 7, 2026.

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