App Store screenshot sizes in 2026: every iPhone and iPad size

Run claude mcp add --transport http --scope user metarun https://metarun.dev/api/mcp, then run /mcp in Claude Code and sign in to MetaRun in your browser.

claude mcp add --transport http --scope user metarun https://metarun.dev/api/mcp

/mcp

claude plugin marketplace add metarun/metarun-skills
claude plugin install metarun-skills@metarun

Then ask Claude Code

• ›Ask Claude Code: Use the PNGs in fastlane/screenshots/en-US to build a 6-slide screenshot set with the Keynote template. Write captions from our feature list in README.md.
• ›Ask Claude Code: Render slides 1 to 3 and show me before uploading anything.
• ›Ask Claude Code: Translate the captions into German and Japanese, check for overflow, then upload the English and German sets.

claude -p runs one request with no interactive session. The browser sign-in can't complete inside -p, so sign in once interactively first, or configure the server with a personal access token in CI. Tools missing from --allowedTools are refused in -p mode.

claude -p "List the screenshot sets on the editable version of com.example.app, with the count per display size and language. Read only." \
  --allowedTools "mcp__metarun__studio_lint_assets,mcp__metarun__apple_preview_upload_screenshot,mcp__metarun__apple_preview_reorder_screenshots,mcp__metarun__apple_preview_upload_library_asset"

Only reads and previews are on that list, so nothing can reach App Store Connect unattended. Run applies in an interactive session where Claude Code can ask you.

Full Claude Code setup guide

Run codex mcp add metarun --url https://metarun.dev/api/mcp; Codex detects MetaRun's sign-in and opens it in your browser.

codex mcp add metarun --url https://metarun.dev/api/mcp

codex mcp login metarun

[mcp_servers.metarun]
url = "https://metarun.dev/api/mcp"

Then ask Codex

• ›Ask Codex: Use the PNGs in fastlane/screenshots/en-US to build a 6-slide screenshot set with the Keynote template. Write captions from our feature list in README.md.
• ›Ask Codex: Render slides 1 to 3 and show me before uploading anything.
• ›Ask Codex: Translate the captions into German and Japanese, check for overflow, then upload the English and German sets.

codex exec runs one request without an interactive session and with its approval policy set to never. MetaRun's reads and previews still run, because they're marked read-only; anything that would ask is refused.

codex exec "List the screenshot sets on the editable version of com.example.app, with the count per display size and language. Read only."

Applies are refused in codex exec by design. Don't set MetaRun's approval mode to approve just to make them pass; keep App Store changes in an interactive session.

Full Codex setup guide

Add https://metarun.dev/api/mcp to ~/.cursor/mcp.json (or use the install link) and sign in to MetaRun when Cursor opens your browser.

{
  "mcpServers": {
    "metarun": {
      "url": "https://metarun.dev/api/mcp"
    }
  }
}

https://cursor.com/link/mcp/install?name=metarun&config=eyJ1cmwiOiJodHRwczovL21ldGFydW4uZGV2L2FwaS9tY3AifQ%3D%3D

Then ask Cursor

• ›Ask Cursor: Build App Store screenshots from the images in @assets/store and caption them.
• ›Ask Cursor: Make slide 2's caption shorter and highlight 'offline'.
• ›Ask Cursor: Upload the rendered set to the iPhone 6.9-inch display for English.

The Cursor CLI runs one request without the editor with agent -p. Allow only the read tools the request needs in ~/.cursor/cli-config.json (Mcp(metarun:tool_name) rules), and keep MetaRun's apply tools out of that list.

agent -p "List the screenshot sets on the editable version of com.example.app, with the count per display size and language. Read only." --output-format json

Don't run it with --force for MetaRun: that approves every tool, applies included.

Full Cursor setup guide

In Xcode 27, add the plug-in from https://github.com/metarun/metarun-skills (Settings, Intelligence, Plug-ins, Add from URL) and click Sign in next to MetaRun.

https://github.com/metarun/metarun-skills

xcode://agent-plugin-clone?repo=https%3A%2F%2Fgithub.com%2Fmetarun%2Fmetarun-skills

Attach build 312 to version 2.4 and tell me what blocks submission.

Then ask Xcode

• ›Ask Xcode: Take the screenshots from the last UI test run and turn them into an App Store set.
• ›Ask Xcode: Use our accent color from the asset catalog for the backgrounds.
• ›Ask Xcode: Upload the set for iPhone and iPad once I've approved the renders.

Full Xcode setup guide

In Claude, open Customize, Connectors, Add custom connector, paste https://metarun.dev/api/mcp and click Connect to sign in to MetaRun.

https://metarun.dev/api/mcp

Then ask Claude

• ›Ask Claude: Make a screenshot set for my app with five slides about the main features.
• ›Ask Claude: Show me how slide 1 looks in the App Store.
• ›Ask Claude: Translate the captions into Spanish and upload both languages.

Full Claude setup guide