rxhanson/Rectangle

Can another program use it through a documented, machine-readable surface?

• next: L2 An automation interface: AppleScript, App Intents/Shortcuts, D-Bus, COM, IPC commands, or a local API. (no automation interface)

desktop ladder · level 1

• ✓ L1 Launchable by other programs with input: command-line arguments, a URL scheme or file associations. Rectangle/Info.plist 1 match
• ✗ L2 An automation interface: AppleScript, App Intents/Shortcuts, D-Bus, COM, IPC commands, or a local API. no automation interface
• ✗ L3 Its functions run without the GUI (a headless/batch mode or a companion CLI). nothing runs without the GUI
• ✗ L4 The automation interface is specified machine-readably (an AppleScript sdef, D-Bus introspection XML, App Intents, an OpenAPI spec, MCP). no machine-readable automation contract

Can integrators rely on it not changing under them?

• next: L2 A changelog exists and marks breaking changes. (no changelog)

all ladder · level 1

• ✓ L1 Releases are versioned (semver tags or versioned changelog sections). 109 semver tags, latest v2.0.3
• ✗ L2 A changelog exists and marks breaking changes. no changelog
• ✗ L3 A deprecation mechanism is used in code (warnings, @deprecated, Deprecation/Sunset headers) or the API is versioned. no deprecation mechanism or API versioning
• ✓ L4 Across tagged releases, no OpenAPI operation, CLI option or __all__ symbol was removed without first being deprecated. 20 tagged releases compared

Can others react to state changes without polling?

Can a machine act with its own revocable, least-privilege identity?

Can its data get in and out, in bulk, in open formats, with an explicit schema?

Can an automated caller use it without guessing, and recover from failure?

• next: L1 In headless mode, failures end with a non-zero exit status instead of a dialog. (no headless mode for automated callers)

desktop ladder · level 0

• ✗ L1 In headless mode, failures end with a non-zero exit status instead of a dialog. no headless mode for automated callers
• ✗ L2 In headless mode, data goes to stdout and diagnostics to stderr. no headless mode for automated callers
• ✗ L3 Documented exit statuses distinguish error classes, and headless output is machine-readable (JSON). no headless mode for automated callers
• ✗ L4 Dry-run for side-effecting operations, and agent docs. no headless mode for automated callers

Can another system run and compose it without a human?

desktop ladder · level 4

• ✓ L1 Buildable from source with documented steps (a README with commands). README.md
• ✓ L2 Packaged as an installer (dmg/pkg, MSI/MSIX, AppImage/Flatpak/Snap, electron-builder, Tauri bundle, PyInstaller). .github/workflows/build.yml 1 match.github/workflows/build.yml 1 match
• ✓ L3 Distributed for unattended installation: a package manager (Homebrew cask, winget, Chocolatey, Flathub, Snap) or release artifacts built in CI. README.md 1 match
• ✓ L4 Settings can be managed without the GUI: documented environment variables or config file, macOS defaults/MDM profiles, or Windows policies. TerminalCommands.md 76 matchesREADME.md 1 match

Can behaviour be added without modifying the code?

• next: L1 Internal seams: a registry, registration function or plugin manager. (no registry or registration function)

all ladder · level 0

• ✗ L1 Internal seams: a registry, registration function or plugin manager. no registry or registration function
• ✗ L2 The docs show how to add behaviour through those seams (even in-tree). no registration functions to document
• ✗ L3 Out-of-tree extensions are discovered (entry points, a plugin directory, configuration) without editing the package. extensions must be added inside the package
• ✗ L4 The extension API is versioned, has lifecycle hooks, and has example extensions. the extension API isn't versioned

Can an operator, or an orchestrating agent, tell whether it works and why not?

• next: L2 Log verbosity can be raised for diagnosis (--verbose/--debug, a log-level setting). (no verbosity control)

desktop ladder · level 1

• ✓ L1 Writes logs through a standard logger (os_log/Logger, electron-log, logging, Qt categories). Rectangle/LaunchOnLogin.swift 1 match
• ✗ L2 Log verbosity can be raised for diagnosis (--verbose/--debug, a log-level setting). no verbosity control
• ✗ L3 Crashes are reported (Sentry, Crashpad/Breakpad, Crashlytics, MetricKit). no crash reporting
• ✗ L4 Tracing or metrics (OpenTelemetry). no tracing

Can an agent change it safely with limited context?

• next: L2 CI runs the tests; applications pin dependencies (libraries and zero-dependency projects are exempt). (no lockfile (applications should pin dependencies))

all ladder · level 1

• ✓ L1 A README and some tests. README.mdRectangleTests/DisplayTransferTests.swift 5 test files
• ✗ L2 CI runs the tests; applications pin dependencies (libraries and zero-dependency projects are exempt). no lockfile (applications should pin dependencies)
• ✗ L3 At least 90% of modules fit 32k tokens and no file exceeds 12k; test/source token ratio at least 0.3; at least 70% of the code is typed. 80% of modules fit 32k tokens; 4 files over 12k
• ✗ L4 No import cycles, and agent docs (AGENTS.md, CLAUDE.md, llms.txt). no agent docs (AGENTS.md, CLAUDE.md, llms.txt)