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capso-screenshot-macos — Claude Code skill: Capso packages in your app

A skill about Capso, the open-source macOS app for capturing screens and recording video. It helps you embed Capso's SPM packages in your own project.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add reason-machines/trending-skills --skill capso-screenshot-macos -a claude-code
Open on GitHub

What capso-screenshot-macos does

Capso is a native macOS app for screenshots and screen recording, written in Swift 6.0 with SwiftUI and targeting macOS 15.0+. Its modular layout is the draw for developers: eight separate SPM packages, each embeddable on its own.

The skill walks through the project architecture, building from source, and the package APIs. CaptureKit handles area, window and fullscreen capture. RecordingKit covers audio, format and quality settings. CameraKit adds a webcam overlay, AnnotationKit gives you shapes, text and undo, and OCRKit wraps the Vision framework. Code samples come with each.

Building from source needs Xcode 16+, macOS 15.0+ and XcodeGen — without it xcodegen generate fails and the project never opens. The pre-built app installs through Homebrew or a signed DMG.

What it helps with

  • wire screen capture into a macOS app
  • record video with system audio
  • pull text off a screenshot with Vision
  • draw arrows and boxes over a capture
  • build Capso from source and learn its package layout

Example prompts for the agent

  • Add the CaptureKit package from Capso to my project and show a window capture example
  • How do I configure RecordingKit to record mp4 with system audio?
  • Walk me through Capso's packages and help me build the project from source

How to install capso-screenshot-macos

1Skills CLI (Vercel)

npx skills add reason-machines/trending-skills --skill capso-screenshot-macos -a claude-code

2Manually: put the files in place

~/.claude/skills/capso-screenshot-macos/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/capso-screenshot-macos/

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about capso-screenshot-macos

How do I install capso-screenshot-macos in Claude Code?

Run npx skills add reason-machines/trending-skills --skill capso-screenshot-macos -a claude-code. The skill file lands at ~/.claude/skills/capso-screenshot-macos/SKILL.md.

What does capso-screenshot-macos do?

It gives the agent knowledge of Capso: architecture, source builds, the APIs of its eight SPM packages, and how to contribute.

What do I need to build Capso from source?

Xcode 16+, macOS 15.0+ and XcodeGen. Without XcodeGen the xcodegen generate step will not run.

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