Building a phone agent that catches missed callbacks: setup, costs, and what broke
Purple_Lab5333 · reddit · 2026-09-28
A detailed build log for a voice agent solving small shops' missed-callback problem: Twilio number ($1/mo) + OpenAI Realtime ($0.05/min), prompt guardrails (no pricing, no card details), Claude via MCP to log calls to Google Sheets and alert owners. Key gotcha: digit-by-digit callback number readback to fix misread numbers.
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