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Codesign keychain prompt fix

Skill bokuwalily/claude-code-skills/skills/codesign-keychain-prompt-fix

75 battle-tested Claude Code skills from shipping 20+ apps solo — macOS, Next.js, Vercel, iOS/Expo, Cloudflare, Phaser, local AI media & more

Install
npx -y skills add bokuwalily/claude-code-skills --skill codesign-keychain-prompt-fix

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

  • 0 stars0 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

What its author says it does

Copied from the file, not written here

fastlane/xcodebuild の iOS署名中に codesign のキーチェーン許可ダイアログ(「codesignがキー…へアクセスしようとしています」)が出る・固まって消えない時。特に複数ビルド同時実行でダイアログが競合してハングした時に発火。

SKILL.md

3.1 KB, 958 tokens by cl100k_base, as published. Nobody here has run it

Procedure

症状

  • iOSアーカイブ署名中、codesign が login キーチェーンの秘密鍵にアクセスするため許可ダイアログを出す
  • 「許可」だと毎回出る。複数ビルド(例: Konomi と Dayleaf)が同時に署名すると SecurityAgent が競合してダイアログが固まり消えなくなる

1. 状況把握

ps aux | grep -iE 'SecurityAgent|codesign|fastlane|xcodebuild' | grep -v grep

同時に走ってる署名系プロセスと、固まった SecurityAgent(/System/.../SecurityAgent.bundle/.../SecurityAgent)の PID を特定。

2. 固まったダイアログを消す

SecurityAgent は killall の SIGTERM を無視するので SIGKILL:

kill -9 <SecurityAgentのPID>

(必要時にOSが自動再起動する安全なプロセス)

3. 根本対処(再プロンプトを止める)= 本命

署名鍵のパーティションリストに codesign を一括登録。ユーザー本人がログインパスワードで実行(自分は password を打たない):

security set-key-partition-list -S apple-tool:,apple:,codesign: -s -k "<ログインパスワード>" ~/Library/Keychains/login.keychain-db

成功すると変更した鍵の属性一覧をダンプして返す(エラーなし=成功)。Apple Distribution/Imported Private Key/Apple Development 系が列挙されていればOK。

  • -k "..." を省けば一度だけGUIで聞かれる。

4. 宙ぶらりんのビルドを掃除して再実行

固まった codesign/xcodebuild/fastlane はツリーごと kill -TERM。残ってよいのは com.apple.CodeSigningHelper(OS常駐)のみ。その後、各ビルドを再実行。

Pitfalls

  • computer-use では固まったダイアログを操作できない:SecurityAgent は許可外アプリなので screenshot に映らず、クリックも届かない → コマンドで殺すのが正解
  • killall SecurityAgent は効かない(SIGTERM無視)→ 必ず kill -9
  • パーティションリスト未設定のまま「許可」を押し続けると鍵ごと・プロセスごとに延々出る。set-key-partition-list が唯一の恒久解
  • 同時複数署名ビルドが競合の根本原因。パーティションリスト設定後は同時でも衝突しないが、設定前は1本ずつ
  • ログインパスワードはこちらに保存しない。スクロールバックが気になるなら clear

Verification

  • set-key-partition-list がエラーなく鍵一覧をダンプ
  • ps aux | grep -iE 'codesign|fastlane|xcodebuild' が CodeSigningHelper 以外クリア
  • 再ビルドで署名ポップが出ずに通る

Gives 0 of the 12 instructions most prompt engineering skills give in 958 tokens

Counted across 563 of the 626 authors here whose files we hold, read 2026-08-06

  • ask at most three clarifying questionsin 22 of 563, across 15 files
  • respond in the user input languagein 14 of 563, across 9 files
  • preserve the original intentin 13 of 563, across 11 files
  • Establish baseline metrics and collect representative examplesin 12 of 563, across 2 files
  • Identify failure modes and prioritize high-impact fixesin 12 of 563, across 2 files
  • Apply prompt and workflow improvements with measurable goalsin 12 of 563, across 2 files
  • Roll back quickly if quality or safety metrics regressin 12 of 563, across 2 files
  • validate changes with tests and roll out in controlled stagesin 12 of 563, across 2 files
  • generate quantitative baseline performance reportsin 12 of 563, across 2 files
  • create representative test scenariosin 12 of 563, across 2 files
  • treat prompts as codein 12 of 563, across 5 files
  • test prompts on diverse inputsin 12 of 563, across 8 files

Said here and by no other author read

  • identify stuck SecurityAgent and signing process PIDs
  • send SIGKILL to the stuck SecurityAgent PID
  • register codesign in the key partition list
  • have the user provide the login password
  • kill orphaned codesign, xcodebuild, and fastlane process trees
  • rerun the builds after clearing processes

Grouped from the skills themselves: near-identical wordings counted once, and counted by distinct author, so one author publishing three of these counts once. Length counted with cl100k_base; the agent that loads this file may tokenize it differently.

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