OpenCode Subagent Sidebar

An OpenCode TUI plugin that shows the active direct child sessions of the current session in the sidebar.

Installation

Install the public package with the OpenCode plugin command:

opencode plugin add @yueby/opencode-subagent-sidebar

Alternatively, add the package to the plugin array in your tui.json:

{
  "plugin": ["@yueby/opencode-subagent-sidebar"]
}

The plugin keeps the existing OpenCode plugin ID opencode-subagent-sidebar and registers its TUI sidebar slot automatically.

Behavior

• Only active direct child sessions of the current session are shown; nested descendants and unrelated sessions are not included.
• A green dot means a child is busy, yellow means it is retrying, and a muted dot represents an idle status (idle children are not displayed).
• Click a row to navigate directly to that child session. Each visible child also gets an Open subagent … command in the command palette.
• The plugin reads the current session's child-session API and OpenCode events. It does not maintain global session state or claim to show every session.

Local development

bun install
bun run typecheck
bun run build
bun test
npm pack --dry-run --json

prepack runs the build automatically when creating a package tarball.