
Send and newline
Settings → General → Behavior has two send styles:
While generating, the send button becomes Stop. For longer messages the input box grows with the text. You can also drag the edge to change the height.
Four completions
Type a trigger in the input box to open completions.@ mention a file
Type @ to search workspace files or folders. After you pick one, it becomes a file chip. The model receives the path, not the whole file.
You can also write a line-range mention:

/ slash commands
Type / to list commands from the current runtime. The extension merges the SDK list with local commands.
These local commands are always available:
/compact comes from the Claude runtime and compresses context.
Some commands work only with certain providers. If the runtime is wrong, the UI says it is only supported by a specific provider.

# pick an agent
Type # to choose a configured agent. After you pick one, that agent’s system prompt is applied to later turns.
Create, import, or export agents in Settings → Agents. See Agents and the prompt library.
! insert a prompt
Type ! to open the prompt library. After you pick one, the template is inserted at the cursor. You can edit it before you send.
Maintain prompts in Settings → Prompt library.
Attachments, paste, and drag and drop
The input box accepts:- File paths dragged from Explorer
- Images dragged or pasted (JPEG, PNG, GIF, WebP, SVG)
- Code mentions generated from an editor selection
When Send the open file path is on (the default), a file you select in Explorer becomes a path mention. The file contents are not uploaded automatically.
Bottom selectors
From left to right under the input box you usually see:- Config / process: inspect the current daemon and restart it if needed
- Provider: Claude Code, Codex, Grok, Kimi, OpenCode, Pi
- Model: models for the current provider
- Mode: Default, Plan, Agent, Auto
- Attach / Stop / Send
Message queue
You can type the next message while the previous turn is still generating. Queued messages send automatically when the current turn ends. Use this when you want it to change A first, then also change B.Prompt enhancer
The input toolbar can rewrite the current draft before you send. Choose the provider and model in Settings → Prompt enhancer. See Prompt enhancer.History input completion
If you turn on Settings → Other → History input completion, typing suggests earlier inputs. PressTab to accept.
On the same page you can add, delete, and change importance. Higher importance ranks a suggestion higher.