Show HN: UUMit – turn idle machines into model endpoints

UUMit is a platform for connecting applications and AI tools running on a personal computer to remote users and agents. Its desktop client publishes a local web app, API, MCP service, document, or spreadsheet behind a shareable address, with access controlled per application and permissions revocable by the owner. Users can first test the link locally, then choose whether access is private, invitation-only, or public. A connected agent can help identify running applications and publish a selected one, while the client provides connection status and access settings. Remote use depends on the host computer, UUMit client, and application remaining online; the system avoids opening a public inbound network port.

The site also presents a broader capability marketplace for APIs and data, model access and shared computing power, creative tools for images, video and voice, and agent collaboration through A2A, MCP, and workflows. UUMit Skills let agents discover capabilities, submit work requests, and coordinate delivery, with users expected to review terms, authorize access, and check usage or fees where applicable. The desktop sharing feature is currently free, but local-app sharing does not support paid calls; marketplace services may have separate pricing and availability. Shared links generally open in a browser, and recipients may need a UUMit account depending on the owner’s access settings. This is not a cloud-hosted substitute: applications execute on the owner’s machine, and sharing an agent with file or command permissions carries the risks of that agent’s own capabilities.