SMRTR AIJan 28, 2026Hacker News

A MitM proxy to see what your LLM tools are sending

SMRTR summary

Sherlock is a transparent proxy tool that intercepts HTTPS traffic between applications and Large Language Model APIs to provide real-time monitoring of token usage, costs, and prompt debugging through a terminal dashboard. The tool works without requiring code changes by using proxy environment variables and automatically saves all intercepted prompts as markdown and JSON files while displaying context window usage with color-coded visual indicators.

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