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From x-callback-url
Invoke x-callback-url schemes from macOS CLI to call apps like Things, Bear, OmniFocus and capture synchronous responses via registered Swift app bundle.
npx claudepluginhub bendrucker/claude --plugin x-callback-urlHow this skill is triggered — by the user, by Claude, or both
Slash command
/x-callback-url:xcallThis skill is limited to the following tools:
The summary Claude sees in its skill listing — used to decide when to auto-load this skill
Send [x-callback-url](https://x-callback-url.com/) requests from the command line and receive responses synchronously.
Automates macOS apps via Apple Events using AppleScript (discovery), JXA (legacy), and PyXA (modern Python). Use when asked to "automate Mac apps", "write AppleScript", "JXA scripting", "osascript automation", or "PyXA Python automation". Foundation skill for all macOS app automation.
Sets up macOS permissions for Apple Notes automation with AppleScript, JXA, osascript, and Shortcuts. Includes access tests, CLI wrapper script, and Shortcuts verification.
Builds native macOS apps in Swift with SwiftUI and AppKit using CLI tools. Handles full lifecycle: build, debug, test, optimize, ship without Xcode.
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Send x-callback-url requests from the command line and receive responses synchronously.
xcall is a Swift CLI that builds into a macOS .app bundle. The .app is required because macOS only delivers URL scheme callbacks to registered applications. On first use, run.sh compiles the source and registers the callback scheme (xcall-claude://) with Launch Services.
${CLAUDE_PLUGIN_ROOT}/scripts/run.sh "<url>"
stdout: x-success query string on success
stderr: x-error query string or timeout message
Exit codes: 0 = success, 1 = error, 2 = cancel
# Add a todo, get its ID back
${CLAUDE_PLUGIN_ROOT}/scripts/run.sh "things:///add?title=Buy%20milk"
# stdout: x-things-id=ABC123
# Update a todo, confirm it applied
${CLAUDE_PLUGIN_ROOT}/scripts/run.sh "things:///update?id=ABC123&auth-token=TOKEN&completed=true"
# stdout: x-things-id=ABC123
# Batch create via JSON
${CLAUDE_PLUGIN_ROOT}/scripts/run.sh "things:///json?data=..."
# stdout: x-things-ids=["ABC123","DEF456"]
# Create a note and get its ID
${CLAUDE_PLUGIN_ROOT}/scripts/run.sh "bear://x-callback-url/create?title=Meeting%20Notes&text=..."
# stdout: identifier=ABC-123&title=Meeting%20Notes
The x-callback-url protocol defines three callback parameters:
errorCode and errorMessagexcall appends these automatically using its registered xcall-claude:// scheme.
Any macOS app that supports x-callback-url and lacks a CLI:
x-things-id / x-things-idsApps with their own CLI (e.g., Shortcuts via shortcuts run) don't need xcall — use the CLI directly.
scripts/main.swift (~100 lines)scripts/build.sh compiles to scripts/xcall.app/com.bendrucker.xcall-claudexcall-claude://Info.plist: CFBundleTypeRole=Editor, LSUIElement=true, LSBackgroundOnly=truemain.swift is newer than the binary