If Open WebUI 0.13.1 shows a sidebar at your LAN address but the chat keeps spinning, do not immediately blame the model. The project released 0.13.1 on November 8 with Tether desktop connectivity and coding-agent integration, followed the same day by 0.13.2 to fix a class of chat failures over plain HTTP. Fixing chat, giving AI access to a computer and automatically approving tools are three separate changes.
Identify the specific failure addressed by 0.13.2
The 0.13.2 release notes describe chats failing to load at plain HTTP LAN or Docker addresses with crypto.randomUUID is not a function. The patch restores loading of new and existing chats, fixes related comment and Markdown-editing failures, and corrects visibility of the Side Chat permission switch.
There is observable deployment feedback: a user commenting on the original November 8 issue reported the same persistent spinner after upgrading to 0.13.1. That establishes a real reported impact, not failure across every browser, address or installation. Nor does the patch make plain HTTP appropriate for sensitive production traffic; existing connection-security requirements still apply.
Tether connects your computer, not just another chat window
In 0.13.1, an Open Terminal offering coding agents can expose them in the model picker, allowing chat interaction and tool-request approval. A compatible terminal and agent environment are required. Upgrading the web interface does not automatically provide every coding service, and a unified entry point does not make models, terminals or related services free.
Tether is a desktop companion for macOS, Windows and Linux that connects a computer to an Open WebUI instance so chats can use it as a terminal. Its documentation requires WebSocket support. A single worker can operate without Redis; multiple workers require Redis or the connection is refused. An outbound connection without additional inbound ports does not turn accessible files, repositories and tools into an isolated sandbox.
Licensing is separate too. The Tether documentation and repository license permit free personal, non-commercial use, not use on behalf of an employer or other organization. Commercial or organizational production use requires the appropriate Open WebUI Enterprise License. Tether should not be described as an unrestricted, free-for-commercial-use open-source plugin, and its terms should not be generalized to the entire Open WebUI project. No enterprise price is inferred here.
Auto approval is optional, not a new safety guarantee
The update adds an Auto tool-permission mode, disabled by default and enabled by an administrator. According to the release notes, a review model can allow a tool call immediately when it judges confirmation unnecessary; calls it cannot review request approval. The review sends the tool, arguments and recent messages to the configured scoring API, adding a data flow to inspect rather than removing that responsibility.
Our analysis: decide which directories, accounts and commands an agent may use before considering Auto. Begin with a copy containing no real client data, retain human approval and inspect a read, a modification and the final state. Until verified in your environment, optional automatic approval is not an established safeguard. Similarly, the vendor's cheaper-tool-chat claim is not a measured savings percentage from this site.
Plan for the database, not only a replacement image
Version 0.13.1 changes the database schema. The project explicitly warns against mixed-version rolling updates for multi-worker, multi-server or load-balanced deployments. Coordinate instance upgrades and migration using its update documentation. Even when targeting 0.13.2, review the changes crossed from your installed version rather than only the patch number.
The project also reports security fixes, but the release notes did not identify them and said advisories would follow CVE assignment. We cannot supply an unpublished vulnerability type or severity. Preserve database and associated-data backups, validate in an isolated environment and schedule the upgrade. Reverting an image does not reverse a database migration; recovery may require the pre-upgrade backup.
If you use Ollama as the model backend, test backend access, the Open WebUI interface and Tether's local-resource access separately. We checked official releases, documentation and original feedback without installing these versions or connecting a user's computer. The useful distinction is what this patch fixes and what additional decisions the new capabilities require.