nkiyohara is an independent software publisher operating through GitHub, offering a compact but focused catalog of two developer-oriented tools centered on email and calendar workflows. Both products follow a local-first design philosophy, meaning data and operations remain on the user's own machine rather than passing through third-party cloud services, an approach that appeals to privacy-conscious professionals and organizations with strict data-handling requirements. The flagship offering, Corresync, is a guarded mail and calendar client that combines a command-line interface with an MCP (Model Context Protocol) server, enabling both direct terminal-based interaction and integration with AI assistants and automation agents that communicate via the MCP standard. The "guarded" aspect of its design reflects an emphasis on controlled, safe handling of messages and schedule data, which is particularly relevant when automated systems are given access to sensitive communications. The second product, owa-bridge, targets organizations and individuals working within Microsoft ecosystems by providing a local-first bridge to Outlook Web services, again exposing functionality through both a CLI and an MCP server. This allows users to read, search, and manage Outlook email and related data from the terminal or through MCP-compatible tools without relying on heavyweight desktop clients. Together, the catalog addresses common use cases such as scripted mailbox management, integration of email and calendar data into AI-assisted workflows, automation of routine correspondence tasks, and terminal-based productivity for developers and system administrators. With an open distribution model via GitHub, nkiyohara's software is suited to technically proficient users seeking lightweight, auditable, and scriptable alternatives to conventional mail and calendar applications.