Introduces himself in the talk as co-founder of HumanLayer, the company that makes a coding agent IDE and cloud; the talk is on the AI Engineer YouTube channel.
Why their word counts: A founder of a company that builds with coding agents every day and runs the migration loop he describes; HumanLayer sells AI coding tooling, so the talk also promotes its approach.
Profile from this source , checked 2026-11-03 .
“ And of course, once you're feeling confident in the loop, we're going to want to speed it up, right? I have 150 RPC procedures to migrate. If I do one at a time, it's going to take six months, which is way longer than I want to wait.” Kyle Mistele Co-founder, HumanLayer · Executive ,
Context. Mistele is explaining why HumanLayer would raise the number of procedures its loop handles per run.
Talk: Loop Engineering from first principles , AI Engineer (YouTube) , July 25, 2026, at 16:23 .
[ Grade B ] Said in the last year Sells AI tools Passage page
“ And every morning, we walk into the office to a small incremental PR that's low risk. And when we first did this, it was actually really frustrating, and we turned the loop off … because we had to constantly update the skill, we had to constantly check out the branch, change the skill, change the code, commit and push, and our loop was actually really high friction, right?” Kyle Mistele Co-founder, HumanLayer · Executive ,
Context. Mistele has just described scheduling the migration loop to run once a day as a CI workflow, and goes on to the problem HumanLayer hit with the first version.
Talk: Loop Engineering from first principles , AI Engineer (YouTube) , July 25, 2026, at 13:48 .
[ Grade B ] Said in the last year Sells AI tools Passage page
“ At HumanLayer, we like to build out what we call golden patterns by hand before setting the agent loose. These are just like idiomatic hand-written examples for the agent to follow because they're just pattern replicators and otherwise you're getting what's in the docs or what the agent knows from the internet.” Kyle Mistele Co-founder, HumanLayer · Executive ,
Context. Mistele describes how HumanLayer prepares the skill given to the agent that makes each change in its migration loop.
Talk: Loop Engineering from first principles , AI Engineer (YouTube) , July 25, 2026, at 12:47 .
[ Grade B ] Said in the last year Sells AI tools Passage page
“ So the next thing we're going to do is add flow control. Because the other problem that we had when we did this was that if we were at a customer site for a week or if we were traveling or spent six days working on slides instead of writing code, the PRs from all of our loops would just stack up. They'd duplicate work. They'd conflict. And we wouldn't get around to doing it. And the loop's work is important, but it's not that important. And so now we just had all this junk we had to deal with…” Kyle Mistele Co-founder, HumanLayer · Executive ,
Context. Mistele explains why HumanLayer added a rule that a loop skips its run while its previous pull request is still open.
Talk: Loop Engineering from first principles , AI Engineer (YouTube) , July 25, 2026, at 15:12 .
[ Grade B ] Said in the last year Sells AI tools Passage page
“ So today I want to talk about what I think works in the real world and what we've started doing at HumanLayer, which, to be clear, is still building loops, right? I think loops are super powerful, but we can design loops and still read the code. In fact, we can design loops that make it easier to read the code because the loops are making the code better.” Kyle Mistele Co-founder, HumanLayer · Executive ,
Context. Mistele is opening the part of his talk about how his company builds agent loops, after arguing that loops which produce unreadable pull requests are the wrong design.
Talk: Loop Engineering from first principles , AI Engineer (YouTube) , July 25, 2026, at 4:03 .
[ Grade B ] Said in the last year Sells AI tools Passage page
“ To illustrate that, I'm going to walk through a control loop that we use internally at HumanLayer. For our loop, we are incrementally migrating our RPC API to Effect. We adopted it for some of our race prone code. We like it, so we're adopting it across the rest of our code base.” Kyle Mistele Co-founder, HumanLayer · Executive ,
Context. Mistele introduces the worked example he uses for the rest of the talk: a daily agent loop at HumanLayer that migrates RPC procedures to the Effect library.
Talk: Loop Engineering from first principles , AI Engineer (YouTube) , July 25, 2026, at 9:09 .
[ Grade B ] Said in the last year Sells AI tools Passage page
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