| Provider | External AI assistant executable that tx launches. |
| Profile | Named bundle of a provider, snippets, and optional wrapper. Appears in the TUI profiles pane. |
| Snippet | Shell command that runs before or after the provider to prepare or post-process context. |
| Wrapper | Process that surrounds the provider command (tmux, docker, etc.). |
| Session | A recorded conversation with metadata, visible in the TUI and via tx search. |
| Virtual profile | Profile generated dynamically from prompt-assembler. |
| Pipeline | The assembled flow of snippets, provider, and wrapper that tx executes. |