We released a Svelte Skill! It will teach your agent to use the svelte CLI to invoke the same tools as the MCP! We also released a subagent so that docs and iterations with the autofixer don't take up precious context! And you can get all of that easily because the repo is now a Marketplace! 🧡

Finally, opencode supports MCP prompts (this was the PR I was waiting to get released)! I already switched to it as my daily driver, now it will be much better (prompts are a powerful MCP primitive and I use it every time with the svelte MCP). Next: resources! I already have them working locally! 😎

🧑💻 If you're using Claude Code on a Mac, the Claude Usage app lets you easily keep track of your usage from the menu bar, and it can even notify you when you're getting close to your limit. Free and open source at github.com/hamed-elfayo...

Work on SvelteBench 2.0 is in progress! This time we're working on making it fully agentic and to support the official Svelte MCP! If you have ideas for the next version, please share them at github.com/sveltejs/ai/... - some early screenshots below.

👀 The first model that writes perfect Svelte 5 code is here! In the video below you'll find out which one and see the scores for frontier models among all the big providers like Google, OpenAI and Anthropic! #svelte #javascript #ai www.youtube.com/watch?v=nXIM...

🎙️ Just published a new episode of Svelte Radio: Custom Renderers for Svelte with Paolo Ricciuti . Have a listen:

👀 The first AI model from OpenAI that can properly write Svelte 5 is here - welcome GPT 5.2! All results at khromov.github.io/svelte-bench...

💫 Putting the finishing touches on my next video - tomorrow we'll find out how AI models have been improving at writing Svelte 5 code and which model has gotten a perfect store on the Svelte LLM benchmark! #ai #svelte

Anthropic enabled Opus 4.5 for all Claude Code users (including Pro!) and you can set /model opusplan to use Opus 4.5 only for Plan mode and Sonnet 4.5 for execution to make your quota last longer! #claude #ai

If you are running projects on Next.js, you probably want to immediately upgrade them since a vulnerability with CVSS 10.0 (highest possible) was just disclosed in the RSC implementation, meaning the door is essentially wide open to hack your sites. nextjs.org/blog/CVE-202...

Guys I'm not making this up...I asked Claude, ChatGPT, Gemini and Grok what frontend framework they would pick if they only could pick the one they would enjoy writing more. They ALL said Svelte 🧡 Do your LLM a favor, switch to Svelte 🧡

A historic first today as Opus 4.5 scores 100% on SvelteBench - the first model to do so. We're hard at work on the next version of SvelteBench that will use an agentic approach, if you have feedback, submit it here: github.com/khromov/svel... #svelte #ai

pretty excited about this feature (thanks @ottomated.net!). dealing with file uploads can be a bit of a pain — the way it works normally is that you (or your framework) does `await request.formData()` to get a FormData object. but it has to buffer every file into memory first. that's a problem!

🤖 Gemini 3.0 SvelteBench results are out! Gemini 2.5 was already great and 3.0 improves on the already excellent scores. All results at khromov.github.io/svelte-bench... #svelte #ai

My quota limit for quota limits has been exceeded. 🙈 Just #AWS things!

🎧 A couple of weeks ago I was a guest on the Svelte Radio podcast to talk about Svelte AI benchmarking and the brand new Svelte MCP server. Check it out in case you missed it! #svelte #javascript www.youtube.com/watch?v=6PTJ...

If you're not tired of hearing about Svelte and AI I'm was recently on the Svelte Radio podcast!

Interested in hearing about Svelte and AI? Tomorrow we're releasing an episode of Svelte Radio with @khromov.se to talk about Svelte Bench and the new Svelte MCP server that was recently released. We also talk about how LLMs always want to write React Stay tuned!

Next.js and RSC is (unfortunately) shown to be a poor abstraction over and over again. Really hope the React team changes course on the recent changes and goes back to simple, clear software.

today we landed a @svelte.dev feature i'm pretty stoked about — we call it 'forking', and it lets you run state changes offscreen and later choose whether to commit them (e.g. user hovers on a link, preload data in case they click) - docs svelte.dev/docs/svelte/... - demo svelte.dev/playground/a...

i rewrote a popular next.js site in svelte. LOC before/after: 1/5th* of the code. <3 svelte (this is a follow upon my previous post bsky.app/profile/nuqa...) * 1/5th and not 1/6.7th since there are a few more features to add to svelte version

I curse at Claude Sonnet and Google's Codex a lot, but damn, Haiku on component level hits different. The velocity enables a nice feedback loop / iteration pace. And the Svelte MCP's autofixer add final touches. What a gift from @paolo.ricciuti.me and @khromov.se! svelte.dev/docs/mcp/ove...

The Svelte MCP now uses `mcp-ui` to show you the playground directly in your chat with `playground-link`. This means you don't have to wait for the big playground link to play with the generated code! Currently, not many clients supports it, but VS Code should soon, and you can try it in Postman 👀

The official Svelte MCP server got a mention in the latest Fireship video! (1:58) Many cool features coming soon so try it out if you haven't! #svelte #ai www.youtube.com/watch?v=PLKr...

I made a SvelteKit remote functions tutorial! Learn how to work with data in SvelteKit from fetching data to guarding routes and optimistic UI updates. Follow along with me as we build Svelte Tricks — a CRUD app using Better Auth and Drizzle ORM. youtu.be/Ldnmirx0QtI

It's happening! Let us know if you're interested in sponsoring!

The cat is out of the box! If you use AI the official MCP is a must have. Try it out and if there's something that the AI still gets wrong please open an issue on github.com/sveltejs/mcp... And btw... it's obviously open source (using TMCP 🤟🏻) github.com/sveltejs/mcp Let us know how it goes! 🧡

lil' treat for all you weekend builders: Svelte now has an official MCP server, courtesy of resident bot wranglers @paolo.ricciuti.me and @khromov.se 🤖 it gives your LLM access to docs and compiler-driven diagnostics — give it a spin and let us know how you get on! svelte.dev/docs/mcp/ove...

🔥 Before and after SvelteKit Remote Functions! (by Snaæk in the official Svelte Discord - join us at discord.com/invite/svelte ) #svelte #sveltekit #javascript

It's not every day you see the Swedish central bank's website at the top of Hacker News! 🇸🇪 🫎

👀 Something very exciting is coming soon if you're using AI with Svelte. Watch this space! #svelte #ai

svelte.dev/packages is now live! It's a convenient and easily discoverable place to find a sampling of high quality packages in the ecosystem. We hope it will give confidence in the Svelte ecosystem to newcomers and help them get started more easily.

👀 Open weights LLMs are catching up to commercial models in their Svelte 5 skills! Kimi K2, DeepSeek v3.2 and GLM-4.6 are in 4th, 5th and 6th place, far surpassing closed models by OpenAI and Google! #ai #svelte All results at khromov.se/svelte-bench

Very cool Svelte MCP exploration from Paolo and makes me think that we can soon get smaller local models to write Svelte 5!

✨ Just released a new video! In this one we take a deep dive into Wuchale - the coolest translation (i18n) library for Svelte! See it in action with a real SvelteKit app in the video! #svelte #internationalization #webdev #javascript www.youtube.com/watch?v=d0RP...

This week is off to a 🚀 start: - Sean casually announced vanilla-CSS mode for LayerChart - @coolify.io 4.0.0-beta.427 just dropped - @khromov.se doing a video on a ParaglideJS* / i18n alternative - @bun.sh 1.2.2 deviating from the spec again (tsconfig 🏴‍☠️) - @michaelaufreiter.com shared more Svedit 🪄

🎞 Putting the finishing touches on my next video! Is Wuchale the perfect library to translate your Svelte and SvelteKit apps? Find out tomorrow! #svelte #javascript

YOU can help make Svelte work better with AI! 🌞

Last election, Norway’s biggest news site went down for 3 hours. This year, VG chose a new stack to make sure that didn’t happen again. Elections — powered by Astro and @svelte.dev

📝 One of the challenges with MCP is for the LLM to know when and how to use MCP tools. To solve that, the Svelte MCP server now has a recommended system prompt. Add it to to your CLAUDE.md, AGENTS.md files or wherever your coding agents prefers! #ai #svelte svelte-llm.stanislav.garden

Just watched this very interesting and well-produced video about research into malicious agents by Anthropic. Highly recommended! www.youtube.com/watch?v=Z3WM... #ai

Two new cloaked models have appeared on OpenRouter - and they're pretty good at Svelte 5! Sonoma Sky Alpha comes in at 7th place on the SvelteBench benchmark, and Sonoma Dusk Alpha places in 12th, albeit the actual difference is small! #svelte #ai

I'm excited to release the Svelte 5 course aimed at new and existing Svelte developers! 🔥 Learn how to make blazing fast web apps with Svelte and understand how it works with hands-on experience. youtu.be/B2MhkPtBWs4

✍️ New blog post! I wrote about my experience building an MCP server for Svelte. And if you haven't tried using it yet, there's no better time! khromov.se/how-and-why-... #svelte #ai #javascript

Emerging job skill in 2025: Using AI without looking like you used AI. 🙈

Reddit decided to randomly flip my avatar using CSS. Now my face points to the right. Why? Don't know! 🤷

Did a little video on SvelteKit's upcoming data interaction API

We complain a lot about Google search lately, but sometimes they still deliver

Anthropic is changing their privacy policy and now wants to train on our data. While I didn't think the "we never train on inputs" stance was tenable, I do wish they would give us something in return for our data (eg. free tiers/discounts like Google does with AI Studio). #ai #claude

Interesting overview of historical LLM context windows. Seems like 1M is the new context window to beat! Still waiting for 1M Claude Sonnet with their commercial plans! 🤞 #llm #ai www.reddit.com/r/LocalLLaMA...