microsoft/TokenEconomizer: Experience-Driven Black-Box Cost Control for Coding Agents

TokenEconomizer is a plugin designed to reduce the cost of running coding agents across repeated repository sessions without modifying the agent itself. Researchers report that the tool cuts mean costs by 18.4 to 30.9 percent on SWE-Bench tasks using three main mechanisms: micro-skills to remember repository facts, tool pruning to remove unused tools, and failure-loop intervention to redirect stuck agent turns. Open article →