Developer shares method to measure Claude Code hook latency

A developer has detailed a method for measuring the latency of custom scripts, known as "hooks," integrated into Claude Code. These hooks, used for tasks like automatic git commits or project categorization, can significantly slow down the user experience if not optimized. The developer proposes a lightweight shell script wrapper that uses bash's `$EPOCHREALTIME` variable to log the execution time of each hook, allowing users to identify and address performance bottlenecks without altering their existing hook logic. AI

IMPACT Optimizing custom scripts for AI tools like Claude Code can improve user experience and productivity.

RANK_REASON The item describes a method for optimizing a feature within an existing product, rather than a new product release or significant industry event.

Read on dev.to — Claude Code tag →

• Claude Code
• hook-latency-wrap.sh
• JSON Lines
• PostToolUse
• PreToolUse
• Python
• settings.json

• product
• infra

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