Alex Booker

Incredibly excited to share file-based agents in Mastra 🔥 Write the prompt in instructions.md, add .ts files in tools/ to define tools by filename, and place subagents in subagents/ Need a new capability? Just add another file

@leodev @mastra Stoked you're joining🔥

I'm officially joining @mastra as a intern today. Looking forward to working with the team, gaining lots of experience from a talented team, and having a lot of fun.

Build Durable Agents That Run for Days with Mastra x.com/i/broadcasts/1…

It’s so absurd, I remember looking into it. Basically groceries are generally VAT exempt because food is an essential need And buying a cold sandwich, salad, etc. to take away is legally treated like buying groceries from a supermarket If the food or hot, or you sit in, it’s classified as catering, so you pay 20% tax You do pay VAT on unhealthy foods like crisps and chocolate in the supermarket, so you pay it in Pret too, whether you eat in or take away. But, funnily enough, not on a chocolate croissant… unless they heat it up… in which case they should technically charge the tax. 😅 Pret is responsible for collecting the tax, but in practice, that just means asking whether you’re taking out. I’ve never heard of anyone being told off for saying “takeaway” and then sitting down in a chain. I could see an owner-run business caring more because they’re more sensitive to HMRC but never seen them complain either.

TIL, in London, if you buy a Cold meal from Pret (or any other shop), the prices are different based on dine-in or take-away. Apparently there is no VAT for take-away. I wonder if people say take-away, and then just sit down and eat in the shop? I don't think anybody enforces this rule?

Now your agent can score. Unlike England.

@steveruizok @tldraw So proud TLDRAW is in Shoreditch!

new office for @tldraw on Cowper Street, a stone's throw from Old Street Station in London

@annunjaya @calcsam @smthomas3 @mastra Woaah well done this is like Scrimba but for product demos

@bookercodes @calcsam @smthomas3 @mastra hey alex, the demo is live at mastra.demoboy.xyz

@mastra hear me out, give @trydemoboy a chance and i promise you won’t regret it!!

I need one so I can use Raycast dictation in the WeWork quiet zone without getting side-eyed

@nicoalbanese10 @OpenAI Congratulations mate 🎉

I’m joining @OpenAI to help build the Codex app! I’ve been using Codex all day, every day for months. It’s where I write every line of code I ship and get just about everything else done. Can’t wait to help shape what comes next.

@coderberry Done github.com/mastra-ai/mast…

Nice work @coderberry! We're going to absorb the idea into Studio github.com/berrydev-ai/ma…

@whatdotcd @mastra @vercel Mastra already pay me to help you with Mastra so I can help you for free 😅 What's on your mind?

Has anyone out there spent meaningful time building on @mastra or Eve (@vercel) ?? Will pay to pick your brain $$$

@xmlking Not planned at the moment 👀

@bookercodes Will file-based agents work with embedded mode deployment? e.g embedded in nextjs app etc ?

Incredibly excited to share file-based agents in Mastra 🔥 Write the prompt in instructions.md, add .ts files in tools/ to define tools by filename, and place subagents in subagents/ Need a new capability? Just add another file

@hemaaanth @gakonst @edwardahn9 @mastra This is the candid and open feedback we yearn for at Mastra! I know it wasn't aimed at us, but I wanted you to know we saw it and really appreciate it!

honestly, can't rave about it enough. we've trid flue, kortix, sim, even, and a few others, and i'm a big mastra fan. - they ship fast, our agents level up every time we update versions - basically everything is OOB: memory, sandboxes, durable agents, schedules/heartbeats, rag pipelines - very easy to extend what isn't ^ - portable to the skills, etc. that local CLIs like claude code, etc. use, - a lot of legacy tooling is drop-in usable the parts that peeves me: - some of that OOB functionality is pretty lightweight, so it gets you going fast but you can hit a wall quickly. we've had to extend the memory model to allow for multiple scopes like user, chat thread, company, channel, etc. also wrote our own slack channel from scratch for added functionality. - durability specifically is a bit of an afterthought/beta feature. another thing we've had to hand roll, and probably the most brittle part of our setup - secrets are nowhere near as well-thought-out as centaur. we ported your iron proxy implementation over which was a bit of a pain

@hemaaanth @edwardahn9 @mastra thank you - will do! can you share your thoughts on mastra, and things you think it hits its limits on?

Don’t be afraid

Make software fun again!

@annunjaya @calcsam @smthomas3 Would love to see an example featuring Mastra

@calcsam @smthomas3

@e2b @CopilotKit @mastra Three of my favourites!

@CopilotKit @mastra 🤝

Build MCP Apps from single prompt ✨ Describe the tools, agent spins up an E2B sandbox running mcp-use, and the app renders as interactive UI in the chat. Built with @mastra, @e2b & CopilotKit. github.com/CopilotKit/Cop…

@xmlking @mastra @tan_stack @calcsam We should definitely add that!

@mastra docs missing @tan_stack Start getting started guide @calcsam