Todd Welch

I build production AI systems for ecommerce. Multi-LLM ops, SP-API SaaS, MCP servers in Claude. Head of tech at a Shopify Plus brand. I post the builds.

[Todd Welch @ToddWelch]

@ReezyResells Audio only. Anything past 15min I hardly watch. Audio I can listen to while I drive, mow or build something outside.

[Todd Welch @ToddWelch]

Coinbase cut their AI bill roughly in half without giving up frontier models. Cheap models handle the routing and glue work. The expensive model only gets called when the reasoning actually matters. Most AI bills are paying frontier prices for grunt work.

[Todd Welch @ToddWelch]

Source: @a16z Show episode with Barbara Liskov, July 13. She co-authored PBFT. Worth the listen if you're building any multi-agent correctness gate. The 1990s distributed-systems literature already worked out what breaks and why.

[Todd Welch @ToddWelch]

Multi-agent review panels are rediscovering Byzantine fault tolerance. PBFT solved the lying-node problem in 1999 with 2f+1 majority certificates. Today's AI review gates are the same shape. The failure modes were mapped 30 years before the agents existed.

[Claude @claudeai]

We're extending access to Claude Fable 5 on all paid plans through July 12.

[Mike Lee @BasedMikeLee]

Nailed it

[Todd Welch @ToddWelch]

@iam_biglad1 And without capitalism, you'd still have the yellow cabs that you gotta pay a million dollars to get a license to drive in New York.

[Todd Welch @ToddWelch]

@jonahhodges_ Always go for brands that if you told the name to your friends they wouldn't know what you're talking about.

[Todd Welch @ToddWelch]

PwC 2026 Global AI Jobs Barometer: https://t.co/ifdBs0KxgY

[Todd Welch @ToddWelch]

PwC analyzed over a billion job ads to answer the "will AI take jobs" question. The real finding is more useful than the headline: AI is splitting work into two tracks, and only one is winning.

[Todd Welch @ToddWelch]

Saw a small version in my own ops. A listing job that ate 1 to 2 hours now runs in under 5 minutes. The model types. Knowing what good looks like is the part that still pays. Expertise didn't get cheaper. It got concentrated.

[Todd Welch @ToddWelch]

@coreyganim @AiWithIqra It's probably an AI bot copying your AI concierge post.

[Todd Welch @ToddWelch]

@UziCryptoo You're looking to buy in the wrong place.

[Todd Welch @ToddWelch]

@EndWokeness Child abuse and evil

[Todd Welch @ToddWelch]

@tferriss Government is always the most scary, but I went with one company owns it because at least with the government, we can hopefully vote them out. Unless, of course, it's China or some other dictatorship, I guess.

[Todd Welch @ToddWelch]

@ReezyResells @WesternLensman Envy is a powerful sin

[Todd Welch @ToddWelch]

@thearslaniqbal One thousand percent it will, and it always was the case. Everything a programmer built was someone else's business knowledge turned into code. They didn't have it firsthand, so it took more rounds than if the person holding the knowledge could just do it themselves.

[Todd Welch @ToddWelch]

The most dangerous person with an AI coding agent isn't an engineer.

It's an operator who knows the business cold.

Anthropic studied 400k Claude Code sessions. The predictor of success wasn't coding skill. It was knowing the problem you're solving.

[Todd Welch @ToddWelch]

The study, from Anthropic: https://t.co/Sd3r69MKrZ