List all Antigravity conversations with their summaries. Scans the brain directory for conversation folders and reads metadata to provide summaries.

List all artifact files in a specific conversation. Returns the markdown files with their sizes and metadata summaries.

Read the full content of a specific artifact file from a conversation.

Full-text search across artifact files. Searches all conversations or a specific one. Returns matching lines with context.

Write a shared note to the brain/_shared/ directory, accessible across all conversations.

Delegate a task to a new child conversation. Creates a pending task that the Brain Bridge Extension will automatically pick up and execute via a headless cascade. Use check_task_result to monitor progress.

Check the status and result of a delegated task. Returns the task description, current status, and result if completed.

List all delegated tasks and their current status. Optionally filter by status.