Marc MacLeod

Founder @stoplightio (acquired), now building Datanaut. Techstars Austin '15. I talk ui / ux, agentic patterns, company building, and anything coding related.

[Marc MacLeod @marbemac]

Finally. It's time. A decade after starting my first company (wow time flies), I'm working on something new!

The new company is Datanaut, and while it's too early to share specifics, I'm excited to work with @scottfaust43 and our small team to re-imagine how we as humans interface with AI, each other, and the treasure trove of data that is fragmented across the apps we use every day.

I'm not much of a sharer, but this go-around I'm committed to building more in public. Expect to see regular posts from me on things like ui / ux design, agentic patterns, running a lean company, and more in the weeds technical stuff - basically a log of the real-world challenges that we're faced with every day as we build Datanaut.

I can't wait to share more. Most importantly, I can't wait to start shipping again 🚀.

[Marc MacLeod @marbemac]

🔥 #AGI has arrived

[Marc MacLeod @marbemac]

Every time i restart my computer and BetterDisplay w this option isn't running, I wonder how folks can live without it. Should be a default option in OSX!

[Electric @ElectricSQL]

StreamDB - a reactive database in a Durable Stream. Designed for AI apps and agentic session state.

You give it a Standard Schema. You get type-safe, multiplexed data sync into @tan_stack DB.

Links in the 🧵

[Marc MacLeod @marbemac]

the more claude code types for me the worse i get at typing myself

[Marc MacLeod @marbemac]

Messing around with formal Job abstraction w @EffectTS_ and @Cloudflare. Define a job like you define state - `Job.Tag`, implement a handler, then schedule from any actor. Works in memory (for tests) or on CF. Builds on https://t.co/ynfvVGD02A -

[Marc MacLeod @marbemac]

Been working on an @EffectTS_ lib to smooth over the experience working with actor patterns, with a specific focus on making it trivial to swap out backing implementation between @Cloudflare durable objects and node/bun/memory. Lot more to it than this, but it's coming along nicely!

[Marc MacLeod @marbemac]

@MichaelArnaldi @EffectTS_ hmm crazy, just because it's looking at .ts source in node_modules/effect instead of .ts source in repo cloned somewhere on disk? tbf we JUST made this change to try using node modules instead of on disk clone, so it's fresh - will def monitor to see how it does

[Marc MacLeod @marbemac]

love that @EffectTS_ ships the ts source with the npm distribution - more libraries should do this. really helps llm's out.. don't need to clone the repo and point them at it if they can just look in node_modules

[Marc MacLeod @marbemac]

ah true on the tests, maybe those could be shipped too :). yes increases size on disk but meh, might be worthwhile tradeoff. re de-optimising the model, have you found any degradation if you encourage llm to search source in node modules for specific libs? In our agents file I just instruct it to use node modules for a few key libs we use like effect, that do indeed ship source. It doesn't seem to get confused and try to use node modules for other libs that aren't mentioned. (this is w opus, haven't tried other models)

[Marc MacLeod @marbemac]

Been working on an @EffectTS_ lib to smooth over the experience working with actor patterns, with a specific focus on making it trivial to swap out backing implementation between @Cloudflare durable objects and node/bun/memory. Lot more to it than this, but it's coming along nicely!

[Marc MacLeod @marbemac]

Very excited about the @EffectTS_ v4 beta! Haven't seen much mentioned about this and curious if there's any guidance on what to expect wrt tsc type check perf, and stack traces / debuggability dx. Similar characteristics between v3 and v4, improvements, not sure yet?

[Marc MacLeod @marbemac]

@audibledata @makisuo @EffectTS_ Ah for some reason I thought the opposite and that things were being consolidated around the effect.service pattern - is there anywhere we could reason more about this? (Discord, gh issue, etc?)

[Marc MacLeod @marbemac]

@dillon_mulroy So eager for this - curious if code (even just WIP throwaway code) is available anywhere?

[Marc MacLeod @marbemac]

@flapalap1 @tan_stack Lucky you - some of us have been patiently anticipating it for a while :) https://t.co/TZ0ag1914H

[Marc MacLeod @marbemac]

Let's goo - the parallel routes proposal for @tan_stack router looks so promising https://t.co/nwvn583MXz

[Marc MacLeod @marbemac]

favorite alias: `git gone` - it removes local branches whose upstream has been deleted

add it:

`git config --global alias.gone "! git fetch -p && git for-each-ref --format '%(refname:short) %(upstream:track)' | awk '$2 == \"[gone]\" {print $1}' | xargs -r git branch -D"`

[Marc MacLeod @marbemac]

@NathanFlurry @EffectTS_ @rivet_dev And tanstack query! https://t.co/SVdsATdJ2v is 🔥

[Marc MacLeod @marbemac]

For Christmas I'd like an e2e architecture that:

1. uses @EffectTS_ as much as possible AND...
2. with actor based backend that makes it easy to swap concrete impl from CF to node, with incredible DX ala @rivet_dev AND..
3. with a thin RPC layer for logic that is not owned by actors, and an incredible client<->server DX ala orpc AND..
4. an easy way to expose some of those RPC procedures over a public api ala ORPC openapi integration

Is that too much to ask? 🙏😅

[Marc MacLeod @marbemac]

@NathanFlurry @EffectTS_ @rivet_dev &gt; the RPC lives on the stateless HTTP layer

Exactly this - although we could probably re-arrange things so that everything is backed by an actor, just not how we're setup atm.

&gt; our native http/websocket support got a huge upgrade recently

Neat I'll check it out!

[Marc MacLeod @marbemac]

@NathanFlurry @EffectTS_ 🤤 ok where/when/how can I dig into this

[Marc MacLeod @marbemac]

@NathanFlurry @MichaelArnaldi @EffectTS_ @rivet_dev YES, this looks super promising

[Marc MacLeod @marbemac]

@jonas @EffectTS_ @rivet_dev @MichaelArnaldi 👀 what a tease! topical as innn... something along these lines is being thought about? say it's so