This does look legitimately exciting. A surprisingly large pain point when doing agentic work has been commenting on something in a larger plan document. I always find myself summarizing the surrounding text to contextualize a comment when all I really want to do is highlight and click "add comment".

Unrelatedly, I have been looking at Zed to centralize my agentic work at $job, where we use different API keys per project to better attribute spend and control model availability based on per-project data protection controls. All of the standard UIs I've tried for this don't really work, but the CLIs mostly do. Using ACP in Zed I was able to bridge that into the UI world and I'm quite happy with it.

I signed up for the beta and I look forward to trying it.

Precision feedback for CLI-based coding agents is terrible. We built and open sourced PlanBridge (https://plan.contextbridge.ai) to fix this. It is a CLI that lets your coding agent open a local browser with a rendered plan/spec (or just the last agent message) so you can select and comment directly on the text and iterate with precision.

The Codex App has inline comments on output/diffs and it has made such a difference for iterating. Like Delta I expect to see this adopted everywhere.

The interesting bit is this type of UI doesn't fit very well in any of the existing terminal TUIs, I have only seen it enabled working well in GUIs.

Directly annotating parts of the convo is the feature that really unlocked Delta for me (have been testing the alpha). So much easier than trying to explain to the agent what I'm responding to in their giant text blob.