---
title: "Conversation Relay"
description: "1 posts about Conversation Relay, summarised, each linking to the original."
---

# Conversation Relay
> 1 posts about Conversation Relay, summarised, each linking to the original.

## Articles

### [How to Test and Fix Voice AI Agent Prompts with Twilio Conversation Relay and Cekura](https://yomu.fyi/post/how-to-test-and-fix-voice-ai-agent-prompts-with-twilio-conversation-re.md)
- Company: [Twilio](https://yomu.fyi/company/twilio.md)
- Author: Paul Kamp
- Published: Sep 24, 2026
- Type: Tutorial

This tutorial demonstrates building a voice AI agent with Twilio Conversation Relay, Node.js, and the OpenAI API, then testing and fixing its prompts using Cekura automated platform, a Twilio Startup Searchlight award winner. Conversation Relay manages real-time voice tasks like speech-to-text, text-to-speech, interruption detection, and turn management over WebSockets, while developers control business logic, tools, and AI integration. Cekura defines evaluation metrics, generates test conversations with realistic caller scenarios—interruptions, topic changes, and unexpected requests—and runs baseline tests to uncover prompt gaps. After analyzing failure reports, developers update the system prompt and re-run tests; fixing a fee-waiver bug raised the pass rate from below 70% to the 90-95% target in one refinement. The tutorial emphasizes that prompts are source code requiring version control and automated testing for reliable voice AI agent behavior.