Xcodebuildmcp

Overview

Use the xcodebuildmcp toolset to build/run/test apps, manage simulators/devices, automate UI, and capture logs/screen media. Default to a safe, repeatable flow: discover → set defaults → execute → verify.

Prereqs & MCP Setup

This skill assumes the XcodeBuildMCP server is installed and exposed to your MCP client so the tools appear (e.g., mcp__xcodebuildmcp__build_run_sim). If the tools are missing, follow the setup steps in:

• references/mcp-setup.md (requirements + MCP client config examples)

Example Requests

• "Build and run the iOS app on the latest simulator and take a screenshot."

• "Run unit tests on the simulator and share the failing test logs."

• "Open the simulator, navigate to Settings, and toggle Dark Mode."

• "Install and launch the app on my connected iPhone."

Quick Start (common flow)

1) Discover the project/workspace and schemes: - mcp__xcodebuildmcp__discover_projs - mcp__xcodebuildmcp__list_schemes

2) Set session defaults (so subsequent tools don’t need repeated params): - mcp__xcodebuildmcp__session-set-defaults (workspacePath/projectPath, scheme, simulatorId/deviceId)

3) Run the task: - Build/run: mcp__xcodebuildmcp__build_run_sim or mcp__xcodebuildmcp__build_run_macos - Tests: mcp__xcodebuildmcp__test_sim / mcp__xcodebuildmcp__test_macos / mcp__xcodebuildmcp__test_device

4) Verify and gather evidence: - mcp__xcodebuildmcp__screenshot (sim) - mcp__xcodebuildmcp__start_sim_log_cap → mcp__xcodebuildmcp__stop_sim_log_cap

Task Index

• Build/Run: iOS simulator, macOS, device installs

• Testing: simulator/macOS/device

• Simulator management: list/boot/erase/appearance/location/gestures

• UI automation: describe UI → tap/type/swipe/gesture

• Logs & debugging: sim logs, device logs, LLDB attach/breakpoints

• Media: screenshots, screen recording

Load references/workflows.md for detailed step-by-step sequences and command patterns.

Operating Rules

• Always call mcp__xcodebuildmcp__describe_ui before coordinate-based taps/swipes/long-press.

• Prefer mcp__xcodebuildmcp__session-set-defaults early to reduce parameter noise.

• If user didn’t specify target device/simulator, list options and ask (or pick a sensible default with useLatestOS).

• Avoid destructive actions (erase sims, clean) unless the user asked for them.