Vespper is a software company building tools that help AI agents work with Microsoft Word documents. Its DOCX MCP server lets agents read .docx files as HTML and make edits as tracked changes, while preserving document styles and formatting. By abstracting the complexity of Office Open XML (OOXML), Vespper enables developers to connect document-editing capabilities to agents through a small set of tools and integrations for TypeScript and Python.

The platform supports tasks such as updating documents with information from spreadsheets, and Vespper provides production-ready templates and examples for agent-driven workflows. These include a Microsoft Word add-in for editing documents and planned tools for extracting tracked changes, comparing documents, and generating personalized files. Vespper offers a hosted MCP service, with on-premise and VPC-isolated deployments available for teams with stricter requirements; enterprise plans can include self-hosting and zero-data-retention options. The company says its product is designed for sensitive professional workflows, including legal and healthcare use, and reports benchmark results comparing its speed, cost, and accuracy with other DOCX editing tools.