FengHub

2026

How Ultravox Does RAG over the Phone

May 09 · 4 min

Wiring Phone Calls into Any Workflow with n8n

May 08 · 4 min

Multi-Stage AI Conversations as a State Machine

May 08 · 4 min

Concurrent WebSockets with asyncio.TaskGroup

May 08 · 3 min

μ-law and PCM: Bridging Telephone Audio with Modern AI

May 08 · 3 min

Building an AI Receptionist That Handles Real Phone Calls

May 07 · 3 min

Why my EventBus is deliberately half-built

May 07 · 12 min

Four nearly identical files, and why I didn't extract a base class

May 07 · 8 min

A one-line constant kept the UI of my roguelike alive for 8 years — until I changed Human's HP

May 07 · 7 min

CI for one person: fast, strict, low-noise

May 06 · 6 min

0 %