Silkie extension reference

Silkie extends kitty with tablet and touch input, gestures, terminal-side ink, vector graphics, HDR, and display and presentation feedback. This reference specifies Silkie’s additions: their escape sequences, fields, units, replies, configuration, and implementation limits.

Start with Extension capabilities protocol to discover what a terminal supports, then OSC 777 extension framing for the framing and timing rules shared by the OSC 777 protocols. Show pointer provides an interactive input inspector.

For the project overview, see A terminal for richer interaction.. For installation, see Install Silkie. The Writing software for Silkie connects these extensions to kitty’s protocols, kitten tools, and the underlying terminal conventions.

Discovery and framing

• Extension capabilities protocol
• OSC 777 extension framing

Input and interaction

• Tablet pointer protocol
• Scroll protocol
• Trackpad gesture protocol
• Haptic feedback protocol
• Image pointer extension
• Terminal-side ink

Graphics and color

• Vector images
• GPU surfaces (zero-copy)
• HDR brightness protocol
• Wide gamut colors
• Cell background alpha

Display and timing

• Display protocol
• Low latency protocol
• Frame presentation protocol

Using Silkie

• Silkie configuration
• Show pointer
• Window actions