What even is code mode?

Polylane describes "code mode," where an agent gets one tool that runs model-written code and exposes its other tools as functions, so only the script's return value enters the context. Using its own 30-day logs, the company reports over 70% of tool calls run this way, a 14x reduction in tool output reaching the model, and a 98.8% script success rate. Scripts run in network-less Cloudflare isolates. These figures are self-reported and come from largely one model. Writes and binary data are still handled as direct calls.