A step-by-step guide to building a production-ready voice agent architecture using WebRTC. Covers server-side token minting to keep API keys out of the browser, connecting a web client to a real-time audio session via an SFU, handling client actions safely with allowlists and confirmation gates, adding tool integrations with timeouts and circuit breakers, and generating post-call artifacts. Includes a production checklist covering security, reliability, observability, and cost control. The architecture is vendor-neutral and can be adapted to any WebRTC-compatible voice platform.
Table of contents
Table of ContentsWhat You'll BuildPrerequisitesTL;DRHow to Avoid Common Production Failures in Voice AgentsHow to Design a Latency Budget for a Real-Time Voice AgentHow to Design a Production Voice Agent Architecture (Vendor-Neutral)Step 0: Set Up the ProjectStep 1: Keep Credentials Server-sideStep 2: Build a Backend Token EndpointStep 3: Connect from the Web Client (WebRTC + SFU)Step 4: Add Client Actions (Agent Suggests, App Executes)Step 5: Add Tool Integrations SafelyStep 6: Add post-call processing (where durable value appears)Production readiness checklistOptional resourcesClosingSort: