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
Infuriating Google commercial imagines the founding fathers embracing AI
I call BS: the founding fathers definitely would have been Microsoft Teams users. | Image: Google "Group project, but make it 1776." That's how a new commercial for Google Workspace opens. And things only get cringier from there. The clip imagines
VERGE · 33m ago · score 42
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
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Small but important signal: I contribute to and support AI-native developer tooling beyond my own products.
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Systems I've Built
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Full feed →VERGE· 33m ago↑ RISING
Infuriating Google commercial imagines the founding fathers embracing AI
42
techaiVERGE· 56m ago↑ RISING
The Sourdough Sidekick automates the boring bit of baking
42
techdevLOB· 4h ago↑ RISING
ABI vs. API (2004)
62
devsystemsLOB· 7h ago↑ RISING
small details in my mastodon client that i wanted more people to notice
62
devsystemsWIRED· 3h ago↑ RISING
Prediction Markets Let You Bet on Whether a Wildfire Will Burn Down Your Town
40
techWIRED· 3h ago↑ RISING
Best Wi-Fi Routers (2026): My Honest Picks After Testing 40+
40
techsystems✦ /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






