Show HN: Claude Code hooks that log every tool call, 124ms per call
Developer frumza releases open-source hooks for Claude Code that log every tool call with 124ms overhead per invocation.
A developer named frumza posted a GitHub repository to Hacker News offering open-source hooks that instrument Claude Code to log every tool call with 124ms of latency per invocation. The hooks are designed to capture and record all tool interactions when using Claude's code execution feature, providing visibility into agent behavior.
The repository offers a drop-in instrumentation layer for developers who want to track tool usage in Claude Code workflows. The stated overhead of 124ms per call suggests the hooks add measurable but not prohibitive latency to tool execution. The project was shared as a "Show HN" post, indicating it is a side project or utility rather than a commercial product, and invites community feedback and contribution.
The hooks target use cases where developers need audit trails, debugging, or analysis of tool calls made by Claude during code execution. This kind of instrumentation can be useful for understanding agent decision-making, troubleshooting failures, or building compliance workflows that require visibility into model-driven tool usage. The open-source model makes the hooks available for any developer running Claude Code locally or in integrated environments.
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