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.
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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
Preparing for KDE Plasma’s Last X11-Supported Release
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LOBSTERS · 1h ago · score 62
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 →LOB· 1h ago↑ RISING
Preparing for KDE Plasma’s Last X11-Supported Release
62
devsystemsHF· 1h ago↑ RISING
Holo3.1: Fast & Local Computer Use Agents
64
airesearchVERGE· 9m ago↑ RISING
Ableton is letting musicians build browser-style extensions for Live
42
techwebTC AI· 1h ago↑ RISING
Anthropic scales Claude Mythos to critical infrastructure in 15+ countries
56
aitechWIRED· 27m ago↑ RISING
Flush With Cash From OpenAI, Opal Is Making an AI-Powered Audio Gadget
40
techaiVERGE· 57m ago↑ RISING
The screenless Camp Snap 2 is slimmer and comes with more filters
42
tech✦ /now
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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






