SkillZip compresses agent skills 3.46x

SkillZip compressed agent skill libraries 3.46x while preserving 99.2% of dependencies and 98.7% of verifier reachability, according to the framework’s new preprint. The authors report gains of up to 12.2 points over the strongest baseline and stable retrieval as libraries scale from 200 to 100,000 skills by replacing repeated procedural motifs with reversible, contract-bearing macros. For builders measuring the cost swing created by an agent harness, this suggests compressing executable structure rather than flattening procedures into shorter prose.