WebRTC for Virtual Classrooms: Breakout Rooms + Recording in 2026
BigBlueButton, Zoom EDU, and Outschool all converge on the same WebRTC pattern for K-12 and higher-ed. Here is the architecture and the recording story for 2026.
11 min
Archive page 923 of 1230
AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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Build a Rust Voice Agent with axum, tokio, and a WebSocket Bridge — Axum websocket
Axum websocket: stand up a production voice bridge in Rust: axum for routing, tokio-tungstenite for the OpenAI Realtime socket, and broadcast channels for fan-out. Real working code.
13 min read
AI Prescription Refill Workflow: HIPAA, DEA, and the Controlled-Substance Edge Case
Refills sound simple — until a Schedule II request hits the agent at 2 a.m. Here is the 2026 HIPAA-and-DEA-aligned workflow CallSphere ships, including the EPCS escalation path.
11 min read
Kafka 4.0 for AI Call Analytics Fan-Out: KRaft, Share Groups, Eligible Leader Replicas
Kafka 4.0 ditches ZooKeeper, ships share groups (KIP-932), and previews Eligible Leader Replicas. Here's how we fan out 50k AI call events per minute to analytics, billing, CRM, and ML training.
12 min read
mcp-stripe in 2026: Agentic Checkout, Link Agent Wallet, and Spending Approvals
Stripe runs a remote MCP server at mcp.stripe.com and Sessions 2026 added the Link agent wallet. We unpack how an LLM goes from intent to settled payment with controls.
12 min read
Build a Voice Agent with Piper TTS — Local, Free, and Fast (2026)
Piper 1.4.2 ships ONNX voices that synthesize on a Raspberry Pi 5 in real time. Here's a full Python voice agent with Piper, faster-whisper, and Ollama — no GPU required.
11 min read
Build an AI Contact Center: Amazon Connect + Bedrock Agents (2026)
Stand up a production AI contact center: Amazon Connect contact flow, a Bedrock Agent with Knowledge Bases, Lex V2 fallback, and a Lambda for tool execution. Real CDK + JSON.
13 min read
Modal Labs Cold-Start Optimization for Voice Agents (Sub-Second Spin-Up)
Use Modal's GPU memory snapshots, Rust-native container runtime, and warm pools to keep Moshi, Kyutai STT, and Llama under 800ms cold-start. Production blueprint for serverless voice.
11 min read
WebRTC + AI Guest Avatar for Live Podcasts in 2026: Riverside, Mux, Pion
Live podcasts in 2026 ship a third chair: an AI guest avatar joining over WebRTC and answering in real time. Here is the production stack with Riverside-style local recording, Pion gateway, and HIPAA-grade transcripts.
10 min
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