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cameroncookecameroncooke/XcodeBuildMCP/skills/mobilebuildmcp/SKILL.md

mobilebuildmcp

Skill6.5k starsChanged 50 days agoMITView on GitHub

Official skill for MobileBuildMCP. Use when doing iOS/macOS/watchOS/tvOS/visionOS work (build, test, run, debug, log, UI automation).

3 other projects use a version of this, 1 of them edited.

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Quiet since May.about the whole repository

Dec 2025: 1 mentionJan 2026: 4 mentionsFeb 2026: 1 mentionMar 2026: 0 mentionsApr 2026: 0 mentionsMay 2026: 1 mentionJun 2026: 0 mentionsJul 2026: 0 mentionsAug 2026: 0 mentionsSep 2026: 0 mentionsOct 2026: 0 mentionsNov 2026: 0 mentions
Dec 2025Jun 2026Nov 2026
Mentions a month of the cameroncooke/XcodeBuildMCP repository that our weekly crawl found. There is no adoption data for this file yet.

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The biggest 5 of 21 mentions linking to the repository that our crawl found. Each line is their own headline.

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Talked about on GitHub and Bluesky (21 times).

On GitHub · 17

12 more on GitHub

The file

We split this skill into the rules it gives an agent

9 rules. About 0 are common, 4 are distinctive, and 5 are very specific to this project.

  • ≈0

    Common · estimate

    Many files like this have a rule of this kind.

  • ≈4

    Distinctive · estimate

    This author's own choices. Worth a look.

  • 5

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Very specific:

    Use MobileBuildMCP tools instead of raw xcodebuild, xcrun, or simctl.

    line 8
  2. Distinctive:

    Only simulator workflow tools are enabled by default.

    line 22
  3. Very specific:

    Call session_show_defaults before the first build/run/test action in a session.

    line 26
  4. Very specific:

    Use discover_projs only when defaults show missing or incorrect project/workspace context.

    line 27
  5. Very specific:

    Do not run discovery speculatively or in parallel with session_show_defaults.

    line 28
  6. Distinctive:

    Do not chain build-only then build-and-run unless the user explicitly requests both.

    line 30
  7. Distinctive:

    Not all tools are enabled by default.

    line 34
  8. Distinctive:

    If a tool is expected but missing, check enabled workflows first.

    line 35
  9. Very specific:

    Update enabled workflows in .mobilebuildmcp/config.yaml, then ask user to reload/restart the session to surface refreshes.

    line 36

≈ “Common” is an estimate: at least 1 in 5 of the 350,495 skill files we read have a rule of the same kind, not the same words. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

MobileBuildMCP

Use MobileBuildMCP tools instead of raw xcodebuild, xcrun, or simctl.

Capabilities:

  • Session defaults: Configure project, scheme, simulator, and device defaults to avoid repetitive parameters
  • Project discovery: Find Xcode projects/workspaces, list schemes, inspect build settings
  • Simulator workflows: Build, run, test, install, and launch apps on iOS simulators; manage simulator state (boot, erase, location, appearance)
  • Device workflows: Build, test, install, and launch apps on physical devices with code signing
  • macOS workflows: Build, run, and test macOS applications
  • Log capture: Stream and capture logs from simulators and devices
  • LLDB debugging: Attach debugger, set breakpoints, inspect stack traces and variables, execute LLDB commands
  • UI automation: Capture screenshots, inspect view hierarchy with coordinates, perform taps/swipes/gestures, type text, press hardware buttons
  • SwiftPM: Build, run, test, and manage Swift Package Manager projects
  • Project scaffolding: Generate new iOS/macOS project templates

Only simulator workflow tools are enabled by default. If capabilities like device, macOS, debugging, or UI automation are not available, the user must configure MobileBuildMCP to enable them. See https://github.com/getsentry/xcodebuildmcp.com/blob/main/app/docs/_content/configuration.mdx for workflow configuration.

Step 1: Establish Session Context

  • Call session_show_defaults before the first build/run/test action in a session.
  • Use discover_projs only when defaults show missing or incorrect project/workspace context.
  • Do not run discovery speculatively or in parallel with session_show_defaults.
  • For simulator run intent, prefer the combined build-and-run tool instead of separate build then run calls.
  • Do not chain build-only then build-and-run unless the user explicitly requests both.

Step 2: Understand Workflow-Scoped Tool Availability

  • Not all tools are enabled by default; tool availability depends on enabled workflows.
  • If a tool is expected but missing, check enabled workflows first.
  • Update enabled workflows in .mobilebuildmcp/config.yaml, then ask user to reload/restart the session to surface refreshes.

Step 3: Report Context Clearly

  • Return the active defaults context used for execution (project/workspace, scheme, simulator/device).
  • For failures, include the exact failing step and the next actionable command/tool call.

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