Use comments to discuss the Canvas with everyone who can access it. Comments are shared; agent chats remain private.
Comments appear when enabled for your organization. Canvas Viewers can comment as well as Editors and Owners. Archived Canvases are read-only.
Start a thread
Choose what to discuss
Point to a card or the location on the Canvas you want to annotate.
Add a comment
Press Q, or choose Comment from the menu, then place the comment. Use C when you want a private Quick Chat instead.
Write and send
Describe the question or change. The comment appears as a pin that collaborators can open.
Reply and find threads
Click a pin to open its conversation and reply. The Canvas explorer also lists comment threads so you can find discussions on a crowded Canvas.
Resolve and reopen
Choose Resolve thread when a discussion is finished. Resolved threads can be reopened with Unresolve thread.
Resolving a thread marks the discussion as handled; it doesn’t change the card’s content.
The agent can read Canvas comment threads when you ask it to review the feedback. Ask, for example: “Read the unresolved comments and summarize the requested changes before editing.”
Posting a comment doesn’t itself start an agent conversation or grant the agent permission to act. Direct the work from your private session and use permission controls to review commands. 
