Claude headless p invocation

Skill bokuwalily/claude-code-skills/skills/claude-headless-p-invocation

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 claude-headless-p-invocation

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claude -p ヘッドレス実行で system prompt 全ロード + macOS perl alarm timeout + token 制限考慮した実行パターン。発火: 非対話的に claude を呼ぶ自動化スクリプト / cron で claude を回す時 / シェルから 1-shot 実行する時

SKILL.md

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Procedure

基本形: claude -p "<prompt>" --output-format text で stdout に結果
timeout 付き (macOS は gtimeout 推奨, なければ perl alarm):

perl -e 'alarm shift; exec @ARGV' 300 claude -p "..." || echo "timeout"

MAX_THINKING_TOKENS 抑制: 大型 prompt なら MAX_THINKING_TOKENS=10000 claude -p ...
stderr 分離: claude -p "..." 2> /tmp/claude-err.log で error trace 別保存
stdin pipe: cat input.md | claude -p "summarize" でファイル入力

Pitfalls

system prompt 全ロードで cost 高 → 短プロンプトでも 5-50 cents / call
session 切れ (8:50am reset) で中断 → claude --resume <session-id> で復旧
--output-format text 指定しないと JSON 返ってきて parse 必要
macOS timeout コマンドは GNU coreutils 必要 → brew install coreutils で gtimeout 提供
並列 claude -p は token block を急速消費 → 5h 800k cap 注意

Verification