CompoWorld composes 448 reusable services into cross-service tasks, lifting Qwen3.6-35B-A3B by 9.17 points on average across eight benchmarks
CompoWorld introduces compositional environment scaling: coding agents turn MCP tool specifications into executable services with typed states and shared interfaces, a random walk connects services through dependency graphs to generate and verify cross-service tasks, verified trajectories support SFT while a Completion-Focused Rubric Reward guides GRPO-based RL, and with 448 services exposing 10,130 tools plus 3K SFT trajectories and 1K RL tasks, Qwen3.6-35B-A3B improves by 9.17 points on average across eight benchmarks and raises AutomationBench task success from 10.33% to 32.33%.