Tracing Hooks provides a lightweight way to inject custom tracing logic into Node.js applications. It ships an ES‑module loader and a CommonJS patch that, given a list of instrumentations, automatically wrap specified class methods (sync or async) in any package at load time, exposing the calls through user‑defined tracing channels. The tool is aimed at developers building APM or observability solutions who need to instrument third‑party modules without modifying their source.