paper-docx paper-pptx paper-xlsx Today, we release Paper Office, a suite of Python packages that allow agents to manipulate Word, PowerPoint, and Excel files with added safety, correctness and breadth, building on legacy open source packages: python-docx, python-pptx and OpenPyxl. Across five models and 61 tasks, Paper packages plus guidance passed 92.5% of trials , versus 80.7% for upstream packages without skills and 69.5% with Anthropic's comparable Office skills. Agents also wrote code to edit Office file internals directly in just 1.6% of Paper runs , compared with 78.7% without skills and 50.5% with Anthropic skills. We note that basic software, in addition to prompt, skills, and tools, remains an important lever for harness optimization. Brownfield Knowledge Work Agents still have low penetration in the daily work of consultants, lawyers, bankers, and operators. We believe the bottleneck to professional adoption is fidelity to real workflows.…