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so I made this and frankly i was in shock that it worked so well, so i decided to make it plugable as an MCP, i have used this approach for 3 projects now and I frankly can't live without it. I hope other people find it useful but ya you never know. Coding in a vacuum isn't useful so lmk what you think if you try it out etc.

this looks neat and reminds me of "Ferrari" for fast and combines "react" so it's a great name. Was there a specific use case for this that inspired you? I would imagine some massive existing heavy thing that you plugged in to fix to save it? I just put my open source thing out so it's nice to see some traction on yours, rooting for you.

Thank you, that's very kind! The name actually comes from "Runtime Accelerated Rendering Infrastructure" (RARI), but I love the Ferrari connection, it definitely fits the performance theme.

The inspiration was pretty straightforward: I wanted to build something for myself that was as performant as I could make it. I'd been using Rust a lot more in my day-to-day work and wanted to see if I could bring those performance benefits to React development without forcing JS devs to write Rust. The goal was to abstract away the complexity of Rust but still deliver the same benefits.

Congrats on shipping your project! What did you build?


ah gotcha... i was picturing like this massive web page that was dog slow that you just like made mad fast... but that's cool though. I'll run it.

I built autonomo on github, it's this mcp you plugin to your whatever ai editor and it drives the app/web/desktop whatever thing and validates it actually runs and works... keep building homie!


idk, i'm loving the newness of all of it, I feel more empowered than ever before, like it's my time. Before startups would take like a year to get going, now it's like a month or so. It's exciting and scary, we have no idea where it's going. Not boring at all. I was getting bored as shit and bam, now i can dream up shit quick and have it validated to, ya i figured that out with an MCP so ya this is my jam. Program MCPs and speed it up!!!!!!

ya, for real, my boss was like let's do e2e testing with AI, look for solutions out there... then like 2 days later he's like wtf is this bill, and i was like you wanted that right? Was using vision calls in azure foundry and was like over 100 bucks or something just in 2 days of me setting it up and trying it out with all the test cases it had.

Hey HN,

Tried posting this yesterday evening but timing was off and it got buried quickly (4 points, no comments). Reposting now during peak hours.

I built Autonomo MCP because AI coding agents (Cursor, Claude, etc.) are great at generating code but terrible at actually running and validating it in real apps. They hallucinate, rely on slow screenshots, or break on multi-device flows.

Autonomo MCP gives agents a fast (~50ms), structured JSON view of app state (semantic UI IDs, network calls, errors, logs) across web + iOS + Android + desktop simultaneously. Local-first, MCP-integrated, no cloud leaks.

- Swap vision bloat for tiny tokens - Cross-device validation (e.g. tap mobile → see web update) - Early stage, just launched: https://github.com/sebringj/autonomo

Would love feedback: Does this solve a pain point for anyone building agentic dev tools? What platforms/workflows would you want next? (Android/Kotlin and C#/.NET are on the TODO list.)

Thanks for any stars, comments, or tries!

– Jason


Congrats Tom. I wonder if a particular model could be used as a baseline for these values or if they are already doing that to check first level prior to a human in the loop? I myself have been using AI for this purpose and have found it getting pretty good. I know its not a replacement for thoughtful moderation however, a tailored model for HN would also promote the tradition of HN in terms of having it not just be about who is there and have it more trained on its best practices to promote consistency, possibly as an aid.


What struck me was the interruptions to the AI speaking which seemed commonplace by the team members in the demo. We will quickly get used to doing this to AIs and we will probably be talking to AIs a lot throughout the day as time progresses I would imagine. We will be trained by AIs to be rude and impatient I think.


I was raised in an interrupt heavy household. The future is looking good for me.


Currently, what I get out from it is a good quick overview with some hallucinations. You have to actually know what you're doing to check the code. However, this is a fast moving target and will in no time be doing that part as well. I think stepping back and thinking maybe this thing is just giving us more and more agency and what can we do with that? We need to adapt to not constrain ourselves to just being programmers. We are humans with agency and if we can adapt to this, we can be more and more powerful having our technical insight that we've gained over the years to do some really cool things. I have a startup and with ChatGPT I've managed to do all parts of the stack with confidence and used it for all sorts of business related things outside of coding that have really helped move the business forward quickly.


IMO Web Components generally suck in developer experience but are good for bridging different js projects or web frameworks as the web components are very compatible between js frameworks. You can literally make a thin wrapper to expose your js flavored framework-based component such as react for example and expose it as a web component to another system such as angular 1 for example and it will work pretty well. You could potentially use this strategy to have parallel tracks of development where you can create an entirely new framework from scratch and start to share that functionality in the legacy project while you're in the process of upgrading which could take a long long time in some cases. At least you won't be continually working on the old one and adding more tech debt... although one could argue this wrapper approach is tech debt.


I'm currently using Deno deploy and found it to be fantastically performant and dumb simple for my lone wolf project. I'm experienced in AWS development in larger teams and it is nice to see a move away from complexity for a change where you can easily set something up without having to think about setting it up at all. The DNS stuff was just dead simple as well and automatic ssl certs was super nice. I have 0 complaints for what this is trying to be and am excited for the road map.


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