Alexa+ Nova

Inspiration

Voice assistants are transforming from simple command-response speakers into proactive, context-aware agents. With the arrival of next-generation intelligence in Alexa+, we wanted to explore how a multimodal web interface could simulate real-time conversational reasoning, dynamic tool calling, and immediate visual feedback without requiring specialized hardware.

What it does

Our project is a simulated Alexa+ agentic web experience. It allows users to interact through real-time voice or text to handle complex, multi-step tasks. When a user gives an open-ended prompt, the agent:

• Understands intent and contextual context.
• Calls mock tools (e.g., event scheduling, workflow automation, real-time summaries).
• Streams voice responses while dynamically rendering structured visual cards and actionable widgets on screen.

How we built it

• Frontend: Next.js, React, and Tailwind CSS for a responsive, modern glassmorphic dashboard with dynamic audio waveform visualizations.
• Voice Interaction: Web Speech API / browser audio streaming for low-latency hands-free capture and text-to-speech output.
• Agent Orchestration: Structured tool/function-calling pipelines connecting user prompts to agentic execution flows.
• Backend & Cloud: Node.js/TypeScript runtime with documented AWS service integrations.

Challenges we faced

• Ensuring real-time speech synthesis felt conversational and synchronized with dynamic UI updates.
• Structuring prompt schemas to guarantee dependable tool calls without latency lag.
• Designing an adaptive layout that behaves equally well as an ambient display and an active productivity workspace.

Accomplishments that we're proud of

• Delivering a smooth simulated Alexa+ voice experience directly in a standard web browser.
• Achieving fast tool execution and rendering rich interactive cards instead of plain text responses.
• Creating an extensible architecture ready for real-world Model Context Protocol (MCP) tool integration.

What we learned

• How modern agentic architectures decompose conversational context into discrete, reliable tool invocations.
• Best practices for streaming structured UI components alongside audio responses.

What's next for the project

• Connecting the agent pipeline to a fully compliant self-hosted MCP server over Streamable HTTP.
• Expanding tool integrations to include smart home simulation, calendar sync, and third-party developer APIs.

Built With

• agenticai
• alexa
• amazon-web-services
• nextjs
• react
• tailwindcss
• typescript
• webspeech