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v0.5.0 — Input Variables & Canvas Redesign

Released March 25, 2026 A release focused on making agents more dynamic and the builder experience more polished. Input variables let you parameterize agents at runtime, the canvas gets a full visual overhaul, and Zapier/Make integrations open up post-processing pipelines.

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✨ What’s New

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🔤 Input Variables

Agents can now declare input variables — runtime parameters injected into the agent’s prompt before a session starts. Variables are defined in the Agent node, automatically get kebab-case keys, and sync with the prompt as you type. A tag picker and autocomplete make it easy to reference variables inside any prompt field. Share links and the Production playground use the deployed variable values, keeping staging and production consistent.

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⚡ Zapier & Make Post-Processing Nodes

Two new integration nodes — Zapier and Make — let you trigger automation workflows at the end of a conversation. Use them to push call summaries, extracted data, or transcripts into your existing tools.

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🎨 Canvas Redesign

The builder canvas has been redesigned with floating panels, an interactive dot background, and opaque nodes for better visual clarity.

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🌈 Updated Node Color Palette

Node colors have been refreshed and categories expanded, making it easier to visually distinguish node types on the canvas.

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🛠️ Setup Screen Redesign

The initial setup screen is now a two-column layout with a dot background for a more polished first impression.

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⚙️ Collapsible Settings Sections

The Settings panel now uses collapsible sections, with LiveKit configuration shown first.

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🌐 Multi-Tenant Public Mode

Added support for a public multi-tenant mode with on-demand Python worker management, enabling Voiceblox to serve multiple users from a shared infrastructure.

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⚡ Improvements

• 📋 Webhook payload redesign — cleaner, richer webhook payloads; structured output events are now shown inline in test history
• 📸 Updated app screenshot — reflects the new canvas design

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🐛 Bug Fixes

• Fixed MCP auth value field visibility when auth type is none
• Fixed deploy prompts by passing --yes to lk CLI commands to skip interactive confirmations
• Fixed nodes appearing transparent when inactive in the playground
• Fixed deploy log overflow and ANSI escape codes in deploy output
• Fixed deploy status using the DB as source of truth to prevent stale state
• Fixed TTS and LLM errors now surfaced to the frontend with a clean disconnect message
• Fixed Share and Deploy panels expanding when switching tabs
• Fixed deploy error display to show the last CLI output line instead of a raw command dump
• Fixed auto-arrange layout algorithm and version history scroll behavior
• Fixed wand button incorrectly opening the AI Builder panel
• Fixed AI Builder notification not re-showing when the same message is sent again
• Added LiveAvatar provider icon