Topic·13 articles
Voice AI
Every project write-up tagged Voice AI, with the guide that pulls their lessons together first.
GuideVoice AI lessons
Lessons From Building a Dozen Voice AI Agents and Apps
What twelve voice AI builds taught me about latency, turn-taking, interruptions, TTS choice, captions, fallbacks, and browser versus server speech to text.
ScreenSense (v2)
How ScreenSense Runs a Browser Agent Loop on Amazon Nova
ScreenSense v2 turns a spoken command into a Chrome extension agent loop: screenshot, DOM snapshot, one Nova Lite action, re-observe, repeat until done.
Voices of the Last World
How I Gave Four AI Characters Their Own ElevenLabs Voices
Voices of the Last World is a browser crisis game where two AI minds debate in ElevenLabs voices. Here is the voice, DSP, and LLM fallback design behind it.
Director (fal x Sequoia hackathon)
The Video Editor You Talk To, Compiled to One ffmpeg Command
How I built Director, a voice-directed video editor where a LiveKit agent casts characters, renders shots on fal, and edits an ffmpeg timeline by tool call.
2nd Place, ElevenLabs x Replit HackathonFaceTime from Mars
Faking a 225 Million Kilometer Phone Call to Mars
How FaceTime from Mars turns browser speech recognition, gpt-4o-mini and ElevenLabs voices into a push-to-talk call with three AI Mars colonists.
Jungle Safari
How Jungle Safari Hides Every AI Round Trip From a Toddler
Jungle Safari is a toddler animal-sound quiz where every ElevenLabs clip and GPT-4o-mini mascot line is generated ahead of time and cached so nothing loads.
Tax It Easy
Building a Voice CPA That Only Says What It Can Cite
How Tax It Easy, a voice AI CPA built overnight at the Moss x YC hackathon, grounds every spoken number and tax-law answer in cited retrieval.
ScreenSense (v1)
ScreenSense v1: A Hold-to-Talk Chrome Extension Built in 36 Hours
How I built a voice-first Chrome extension that screenshots your tab, transcribes your spoken question, and streams a vision-model answer next to your cursor.
Best Voice Agent, ElevenLabs x Firecrawl HackathonScreenSense (v3)
Teaching ScreenSense to Hold a Conversation While It Clicks
How I rebuilt ScreenSense as a conversational voice browser agent with Firecrawl page context and ElevenLabs voice, and won Best Voice Agent.
Spotify for Hackers
Building an AI DJ That Never Leaves Dead Air Between Tracks
How Spotify for Hackers uses Groq, ElevenLabs and browser-side audio ducking so a voiced AI host bridges every track handoff without a gap of silence.
Super Nova
Wiring a Voice-Only Companion to MCP, Groq and ElevenLabs
How Super Nova turns continuous speech into MCP tool calls and on-screen widgets with a hand-written MCP client, regex-first routing, and ElevenLabs TTS.
The Missing Angle
Interrogating AI Suspects Out Loud with ElevenLabs Speech Engine
How The Missing Angle wires ElevenLabs Speech Engine, Groq and a Gaussian-splat rooftop into a murder mystery you solve by talking to the suspects.
VoiceCaptcha
Bots Can Click Checkboxes. Can They Speak? Building VoiceCaptcha
How VoiceCaptcha makes a user speak a one-time phrase, transcribes it with Groq Whisper on a Cloudflare Worker, and scores it with a small fuzzy matcher.