`gl-buffer-snoop` is a tiny utility that monkey‑patches a WebGL rendering context to record every data upload to GPU buffers. It adds a `gl.getBufferData(buffer)` method that returns a client‑side copy of what the buffer should contain, making it useful for testing and debugging code that manipulates WebGL buffers (e.g., with `gl-buffer`). It’s intended for developers writing or testing WebGL‑related libraries rather than for production graphics apps.