Skill2Env synthesizes 2,963 executable environments from skills, and 1.5K fine-tuning trajectories lift a 35B agent from 36.6 to 45.0 across seven benchmarks
Skill2Env is a capability-oriented framework that curates skills from public skill libraries, uses reusable difficulty patterns and task blueprints to jointly synthesize task instructions, execution substrates, workspaces, and rubric-based evaluators, and iteratively hardens tasks using solver execution evidence, yielding 2,963 executable tasks; supervised fine-tuning of Qwen3.6-35B-A3B on 1.5K high-scoring trajectories from these environments raises the unweighted average across seven agent benchmarks from 36.6 to 45.0.