Chat panel

The controls, toggles, and input options in the Riff agent chat panel — the same in the App builder, Agent builder, and Ask Riff.

The Riff agent chat panel is the interface you use to communicate with the Riff agent while building. It appears on the right side of the App builder, in the Chat tab of the Agent builder, and in Ask Riff. The controls are the same in all three places.

Thread navigation (top)

• New Chat (+ icon) — starts a fresh conversation thread

• Thread Selector — a dropdown listing all threads for this project. Each entry shows a description and a timestamp (e.g. "Mon 12/05/2025 · 3 hours ago"). Click to switch threads.

Chat input (bottom)

Attachments Click the attachment icon or drag a file into the chat. Supported formats: images (PNG, JPG, etc.) and documents (PDF, Word, Excel, CSV, plain text).

Agent dropdown Adjust how the Riff agent behaves for this conversation:

Setting	Options
Model	Best · Standard · Fast
Context Window	Small · Medium · Large · Extra Large
Tone of Voice	Neutral · Friendly · Professional
Response Style	Concise · Normal · Explanatory
Technical Level	Beginner · Intermediate · Advanced

Tone, Response Style, and Technical Level are saved to your profile and carry across sessions.

Build / Plan toggle Controls whether the Riff agent acts or describes. See Build / Plan toggle.

Text input Grows as you type. Press Shift+Enter for a new line without sending.

Type / to open the skill picker — a searchable list of available skills, each showing its name and description. Select one to load its content into your message.

Send / Stop

• Arrow up (↑) — sends your message (or press Enter)

• Square — stops the Riff agent's current response mid-stream

Chat history (middle)

• Messages from you and the Riff agent, with markdown and code syntax highlighting

• Tool use shown inline: tool name · progress indicator · elapsed time

• HTML visualisations rendered live in the panel

• Older messages load as you scroll up (200 messages per batch)

• A completion chime plays when the Riff agent finishes responding — turn this off in your profile settings