A deep dive into SpacetimeDB's TypeScript SDK and how to wire it into a Next.js 15 App Router application for live visitor tracking and realtime features.
3 min readCurrent systems
Active work,
live signals, and writing.
Featured builds, the latest ranked signal, and recent writing — all in one place.
Featured build
MAINFRAME
Open-source bash stdlib for AI agents. Signals systems-level engineering range. Shows open-source authorship.
Pure bash runtime · Agent working memory primitives
Latest ranked signal
Best Gifts for Mom (2026): E-Readers, Digital Wall Calendar, Smart Bird Feeders
Your mom never gets you a thoughtless gift, so you shouldn’t get her one, either. Here’s every cool gift WIRED writers would give their mothers.
WIRED · 4m ago · score 40
Publishing system
Building Realtime Apps with SpacetimeDB and Next.js 15
A deep dive into SpacetimeDB's TypeScript SDK and how to wire it into a Next.js 15 App Router application for live visitor tracking and realtime features.
3 min read · spacetimedb · next.js
Open-source ecosystems
Projects I support
Small but important signal: I contribute to and support AI-native developer tooling beyond my own products.
✦ Selected Work
Systems I've Built
Ranked signal feed
Full feed →WIRED· 4m ago↑ RISING
Best Gifts for Mom (2026): E-Readers, Digital Wall Calendar, Smart Bird Feeders
40
techWIRED· 5m ago↑ RISING
The Secret to Amelia Dimoldenberg’s Online Superstardom? Control
40
techsystemsMIT TR· 1h ago↑ RISING
A blueprint for using AI to strengthen democracy
57
researchaiVERGE· 27m ago↑ RISING
Google DeepMind workers are unionizing over AI military contracts
42
techaiVERGE· 48m ago↑ RISING
Microsoft is finally ditching the junk MSN feed in Windows widgets
42
techsystemsHN· 3h ago↑ SIGNAL
Google Chrome silently installs a 4 GB AI model on your device without consent
24
⬆ 251aiweb✦ /now
What I'm Doing
Right Now
Building
ACTIVE
PropertyJunk.com — junk removal SaaS platform
ACTIVE
TaxScout.app — commercial real estate tax optimization
WIP
MAINFRAME — open source bash stdlib expansion
WIP
toddwatts.dev — this site
Reading
01Attention Is All You Need (re-read)
02The Pragmatic Programmer — 2nd ed.
03Designing ML Systems — Chip Huyen
Watching
▶
Andrej Karpathy
Neural nets: Zero to Hero
▶
Lex Fridman
Sam Altman ep.
▶
ThePrimeagen
Rust streams
My Setup
EditorVS Code + Claude Code
AIClaude Sonnet 4.5, Pi
RuntimeBun 1.2
DeployVercel





