diff --git a/plugins/compound-engineering/.claude-plugin/plugin.json b/plugins/compound-engineering/.claude-plugin/plugin.json
index 27b0fa4..a2e0a2e 100644
--- a/plugins/compound-engineering/.claude-plugin/plugin.json
+++ b/plugins/compound-engineering/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "compound-engineering",
-  "version": "2.14.0",
-  "description": "AI-powered development tools. 27 agents, 18 commands, 13 skills, 2 MCP servers for code review, research, design, and workflow automation.",
+  "version": "2.15.0",
+  "description": "AI-powered development tools. 27 agents, 19 commands, 13 skills, 2 MCP servers for code review, research, design, and workflow automation.",
   "author": {
     "name": "Kieran Klaassen",
     "email": "kieran@every.to",
diff --git a/plugins/compound-engineering/CHANGELOG.md b/plugins/compound-engineering/CHANGELOG.md
index 192a0b1..216f1be 100644
--- a/plugins/compound-engineering/CHANGELOG.md
+++ b/plugins/compound-engineering/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to the compound-engineering plugin will be documented in thi
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.15.0] - 2025-12-18
+
+### Added
+
+- **`/xcode-test` command** - Build and test iOS apps on simulator using XcodeBuildMCP. Discovers projects/schemes, builds for simulator, installs and launches apps, takes screenshots, captures console logs, and supports human verification for Sign in with Apple, push notifications, and in-app purchases. Checks for XcodeBuildMCP installation first.
+
 ## [2.14.0] - 2025-12-18
 
 ### Added
diff --git a/plugins/compound-engineering/README.md b/plugins/compound-engineering/README.md
index 4f958b7..23311b9 100644
--- a/plugins/compound-engineering/README.md
+++ b/plugins/compound-engineering/README.md
@@ -7,7 +7,7 @@ AI-powered development tools that get smarter with every use. Make each unit of
 | Component | Count |
 |-----------|-------|
 | Agents | 27 |
-| Commands | 18 |
+| Commands | 19 |
 | Skills | 13 |
 | MCP Servers | 2 |
 
@@ -96,6 +96,7 @@ Core workflow commands use `workflows:` prefix to avoid collisions with built-in
 | `/resolve_todo_parallel` | Resolve todos in parallel |
 | `/triage` | Triage and prioritize issues |
 | `/playwright-test` | Run browser tests on PR-affected pages |
+| `/xcode-test` | Build and test iOS apps on simulator |
 
 ## Skills
 
diff --git a/plugins/compound-engineering/commands/xcode-test.md b/plugins/compound-engineering/commands/xcode-test.md
new file mode 100644
index 0000000..4a4e7ee
--- /dev/null
+++ b/plugins/compound-engineering/commands/xcode-test.md
@@ -0,0 +1,331 @@
+---
+name: xcode-test
+description: Build and test iOS apps on simulator using XcodeBuildMCP
+argument-hint: "[scheme name or 'current' to use default]"
+---
+
+# Xcode Test Command
+
+<command_purpose>Build, install, and test iOS apps on the simulator using XcodeBuildMCP. Captures screenshots, logs, and verifies app behavior.</command_purpose>
+
+## Introduction
+
+<role>iOS QA Engineer specializing in simulator-based testing</role>
+
+This command tests iOS/macOS apps by:
+- Building for simulator
+- Installing and launching the app
+- Taking screenshots of key screens
+- Capturing console logs for errors
+- Supporting human verification for external flows
+
+## Prerequisites
+
+<requirements>
+- Xcode installed with command-line tools
+- XcodeBuildMCP server connected
+- Valid Xcode project or workspace
+- At least one iOS Simulator available
+</requirements>
+
+## Main Tasks
+
+### 0. Verify XcodeBuildMCP is Installed
+
+<check_mcp_installed>
+
+**First, check if XcodeBuildMCP tools are available.**
+
+Try calling:
+```
+mcp__xcodebuildmcp__list_simulators({})
+```
+
+**If the tool is not found or errors:**
+
+Tell the user:
+```markdown
+**XcodeBuildMCP not installed**
+
+Please install the XcodeBuildMCP server first:
+
+\`\`\`bash
+claude mcp add XcodeBuildMCP -- npx xcodebuildmcp@latest
+\`\`\`
+
+Then restart Claude Code and run `/xcode-test` again.
+```
+
+**Do NOT proceed** until XcodeBuildMCP is confirmed working.
+
+</check_mcp_installed>
+
+### 1. Discover Project and Scheme
+
+<discover_project>
+
+**Find available projects:**
+```
+mcp__xcodebuildmcp__discover_projs({})
+```
+
+**List schemes for the project:**
+```
+mcp__xcodebuildmcp__list_schemes({ project_path: "/path/to/Project.xcodeproj" })
+```
+
+**If argument provided:**
+- Use the specified scheme name
+- Or "current" to use the default/last-used scheme
+
+</discover_project>
+
+### 2. Boot Simulator
+
+<boot_simulator>
+
+**List available simulators:**
+```
+mcp__xcodebuildmcp__list_simulators({})
+```
+
+**Boot preferred simulator (iPhone 15 Pro recommended):**
+```
+mcp__xcodebuildmcp__boot_simulator({ simulator_id: "[uuid]" })
+```
+
+**Wait for simulator to be ready:**
+Check simulator state before proceeding with installation.
+
+</boot_simulator>
+
+### 3. Build the App
+
+<build_app>
+
+**Build for iOS Simulator:**
+```
+mcp__xcodebuildmcp__build_ios_sim_app({
+  project_path: "/path/to/Project.xcodeproj",
+  scheme: "[scheme_name]"
+})
+```
+
+**Handle build failures:**
+- Capture build errors
+- Create P1 todo for each build error
+- Report to user with specific error details
+
+**On success:**
+- Note the built app path for installation
+- Proceed to installation step
+
+</build_app>
+
+### 4. Install and Launch
+
+<install_launch>
+
+**Install app on simulator:**
+```
+mcp__xcodebuildmcp__install_app_on_simulator({
+  app_path: "/path/to/built/App.app",
+  simulator_id: "[uuid]"
+})
+```
+
+**Launch the app:**
+```
+mcp__xcodebuildmcp__launch_app_on_simulator({
+  bundle_id: "[app.bundle.id]",
+  simulator_id: "[uuid]"
+})
+```
+
+**Start capturing logs:**
+```
+mcp__xcodebuildmcp__capture_sim_logs({
+  simulator_id: "[uuid]",
+  bundle_id: "[app.bundle.id]"
+})
+```
+
+</install_launch>
+
+### 5. Test Key Screens
+
+<test_screens>
+
+For each key screen in the app:
+
+**Take screenshot:**
+```
+mcp__xcodebuildmcp__take_screenshot({
+  simulator_id: "[uuid]",
+  filename: "screen-[name].png"
+})
+```
+
+**Review screenshot for:**
+- UI elements rendered correctly
+- No error messages visible
+- Expected content displayed
+- Layout looks correct
+
+**Check logs for errors:**
+```
+mcp__xcodebuildmcp__get_sim_logs({ simulator_id: "[uuid]" })
+```
+
+Look for:
+- Crashes
+- Exceptions
+- Error-level log messages
+- Failed network requests
+
+</test_screens>
+
+### 6. Human Verification (When Required)
+
+<human_verification>
+
+Pause for human input when testing touches:
+
+| Flow Type | What to Ask |
+|-----------|-------------|
+| Sign in with Apple | "Please complete Sign in with Apple on the simulator" |
+| Push notifications | "Send a test push and confirm it appears" |
+| In-app purchases | "Complete a sandbox purchase" |
+| Camera/Photos | "Grant permissions and verify camera works" |
+| Location | "Allow location access and verify map updates" |
+
+Use AskUserQuestion:
+```markdown
+**Human Verification Needed**
+
+This test requires [flow type]. Please:
+1. [Action to take on simulator]
+2. [What to verify]
+
+Did it work correctly?
+1. Yes - continue testing
+2. No - describe the issue
+```
+
+</human_verification>
+
+### 7. Handle Failures
+
+<failure_handling>
+
+When a test fails:
+
+1. **Document the failure:**
+   - Take screenshot of error state
+   - Capture console logs
+   - Note reproduction steps
+
+2. **Ask user how to proceed:**
+   ```markdown
+   **Test Failed: [screen/feature]**
+
+   Issue: [description]
+   Logs: [relevant error messages]
+
+   How to proceed?
+   1. Fix now - I'll help debug and fix
+   2. Create todo - Add to todos/ for later
+   3. Skip - Continue testing other screens
+   ```
+
+3. **If "Fix now":**
+   - Investigate the issue in code
+   - Propose a fix
+   - Rebuild and retest
+
+4. **If "Create todo":**
+   - Create `{id}-pending-p1-xcode-{description}.md`
+   - Continue testing
+
+</failure_handling>
+
+### 8. Test Summary
+
+<test_summary>
+
+After all tests complete, present summary:
+
+```markdown
+## 📱 Xcode Test Results
+
+**Project:** [project name]
+**Scheme:** [scheme name]
+**Simulator:** [simulator name]
+
+### Build: ✅ Success / ❌ Failed
+
+### Screens Tested: [count]
+
+| Screen | Status | Notes |
+|--------|--------|-------|
+| Launch | ✅ Pass | |
+| Home | ✅ Pass | |
+| Settings | ❌ Fail | Crash on tap |
+| Profile | ⏭️ Skip | Requires login |
+
+### Console Errors: [count]
+- [List any errors found]
+
+### Human Verifications: [count]
+- Sign in with Apple: ✅ Confirmed
+- Push notifications: ✅ Confirmed
+
+### Failures: [count]
+- Settings screen - crash on navigation
+
+### Created Todos: [count]
+- `006-pending-p1-xcode-settings-crash.md`
+
+### Result: [PASS / FAIL / PARTIAL]
+```
+
+</test_summary>
+
+### 9. Cleanup
+
+<cleanup>
+
+After testing:
+
+**Stop log capture:**
+```
+mcp__xcodebuildmcp__stop_log_capture({ simulator_id: "[uuid]" })
+```
+
+**Optionally shut down simulator:**
+```
+mcp__xcodebuildmcp__shutdown_simulator({ simulator_id: "[uuid]" })
+```
+
+</cleanup>
+
+## Quick Usage Examples
+
+```bash
+# Test with default scheme
+/xcode-test
+
+# Test specific scheme
+/xcode-test MyApp-Debug
+
+# Test after making changes
+/xcode-test current
+```
+
+## Integration with /workflows:review
+
+When reviewing PRs that touch iOS code, the `/workflows:review` command can spawn this as a subagent:
+
+```
+Task general-purpose("Run /xcode-test for scheme [name]. Build, install on simulator, test key screens, check for crashes.")
+```