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
My favorite Kindle alternative is $30 off after a recent price increase
The Kobo Libra Colour lets you take notes. | Image: Rakuten Kobo Kobo recently raised the price of its Libra Colour e-reader to $259.99, but today’s deal effectively erases that hike. The company, Best Buy, and Target, are all selling it for its ol
VERGE · 5m 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
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 →VERGE· 5m ago↑ RISING
My favorite Kindle alternative is $30 off after a recent price increase
42
techaiLATENT· 1h ago↑ HOT
🔬 The Coolest Diffusion Research Isn't in LLMs — Evan Feinberg & Sergey Edunov, Genesis Molecular AI
67
airesearchWIRED· 5m ago↑ RISING
Penalty Shootouts: Is the Team That Kicks First More Likely to Win?
40
techLATENT· 2h ago↑ HOT
Warp CEO Zach Lloyd on why software factories are the next phase of coding
67
airesearchMIT TR· 1h ago↑ RISING
LLMs are stuck in a groupthink groove. This startup is trying to get them out.
57
researchaiWIRED· 33m ago↑ RISING
Anthropic Added a New Security Measure to Get Back Into the Trump Administration’s Good Graces
40
techai✦ /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






