developer tools
The Skill Stayed the Same. The Website Did Not.
SkillShift-Bench changes context, visual grounding and execution conditions across three self-hosted web systems; execution shifts hurt most.
Summary
SkillShift-Bench changes context, visual grounding and execution conditions across three self-hosted web systems; execution shifts hurt most.
Reusable web-agent skills are usually tested in the environment that produced them. SkillShift-Bench instead applies controlled contextual, perceptual and execution changes across three self-hosted sites, measuring completion, interaction cost, skill use and failure. Every shift family degraded robustness, with execution changes placing the strongest pressure on learned skills and increasing both cost and failure. The authors frame reuse under change as a nonstationary local-executability problem and offer a test-time adaptation method that improves execution without rebuilding the entire skill library. These are controlled systems rather than the open web, but the benchmark isolates a practical deployment question: whether stored instructions remain actionable after the interface and available actions evolve.
Why it matters
SkillShift-Bench changes context, visual grounding and execution conditions across three self-hosted web systems; execution shifts hurt most.
Limits and context
- These are controlled systems rather than the open web, but the benchmark isolates a practical deployment question: whether stored instructions remain actionable after the interface and available actions evolve.
Key claims
SkillShift-Bench changes context, visual grounding and execution conditions across three self-hosted web systems; execution shifts hurt most.
Qualification: These are controlled systems rather than the open web, but the benchmark isolates a practical deployment question: whether stored instructions remain actionable after the interface and available actions evolve.
Evidence: source-2026-10-27-006
Sources
- arXiv preprint 2610.33528, original v1arXiv · primary research
Corrections
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