Claude Code gets native LSP support

https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md

by JamesSwift • 7 months ago

511 342 7 months ago

github.com

vorticalbox• 7 months ago

My favourite agent crush[0] has lsp support for a while.

I’ve not noticed the agent deciding to use it all that much.

[0] https://github.com/charmbracelet/crush

esafak4• 7 months ago

Did it make no difference when you mentioned in your AGENT.md which LSP servers are installed?

tonyhart7• 7 months ago

I guess supporting tool call natively would improve read token efficiency since they can just run the tool directly

CharlesW2• 7 months ago

It's strangely difficult to find official information about this, but here's what I've learned:

• Use `/plugin` to open Claude Code's plug-in manager

• In the Discover tab, enter `lsp` in the search box

• Use `spacebar` to enable the ones you want, then `i` to install

Hope that helps!

kasey_junk• 7 months ago

Have you figured out what triggers it?

CharlesW2• 7 months ago

No, and it looks like this functionality was released/announced prematurely:

https://github.com/anthropics/claude-code/issues/14803#issue...

https://github.com/anthropics/claude-code/issues/13952#issue...

monkpit• 7 months ago

Go to /plugins, then marketplaces, then select official and update marketplace. This did it for me.

bicx• 7 months ago

Thanks! I saw typescript-lsp in the plugins list, but I wasn't sure if that was related.

Maxious• 7 months ago

If you want to add custom lsps, they need to be wrapped in a Claude code plugin which is where the little bit of actual documentation can be found https://code.claude.com/docs/en/plugins-reference

JamesSwift4• 7 months ago

Yeah, I posted here because I was completely blindsided when my claude asked if I wanted to install a go lsp. I didnt even know that was a thing. A little googling led to this changelog from 3 days ago, but I was surprised I hadnt seen any previous mentions of this online (from either creators, anthropic, or HN posts).

I am disabling it for now since my flow is fine at the moment, I'll let others validate the usefulness first.

bredren• 7 months ago

I got an unexpected offer to install the LSP plugin for swift-lsp at 6:30pm pst on 12/19pm and again yesterday afternoon the text reads:

LSP Plugin Recommendation

LSP provides code intelligence like go-to-definition and error checking

Plugin: swift-lsp

Swift language server (SourceKit-LSP) for code intelligence Triggered by: •swift files

Would you like to install this LSP plugin? › 1. Yes, install swift-lsp 2. No, not now 3. Never for swift-lsp 4. Disable all LSP recommendations

ako2• 7 months ago

I had a conversation with Claude code 2 weeks ago where it mentioned early support for LSP had been added into Claude code. Have been working on a LSP for a custom language since then.

tomashubelbauer2• 7 months ago

I am on the latest version of Claude Code and nothing comes up when I follow this and search for "mcp". Looks like this feature is quite undercooked at the moment. I'm hoping for a more straightforward way to enable this and ensure the LSP is being used by Claude in the future.

anamexis5• 7 months ago

Perhaps because you are searching for "mcp" and not "lsp"?

xnorswap2• 7 months ago

That works, but even after installing the plugin, it doesn't seem to run the language server itself, so it doesn't seem to do anything in the terminal version of claude-code.

I'd be disappointed if this were a feature only for the vscode version.

11235813212• 7 months ago

This is an ignorant question, but, what is the benefit of this if you also have your project open in an editor or IDE (presuming they integrate language server?)

If you're vibe coding without an editor, would this have any benefits to code quality over a test suite and the standard linter for a language?

esafak4• 7 months ago

Your test suite and linter don't code. They don't help your agent look up definitions of variables, etc.

11235813212• 7 months ago

Ah, it's about making language documentation available, and making crawling the app for understanding cheaper/more direct?

ascorbic2• 7 months ago

The same reason you want an LSP in your editor: so you get inline docs and error messages, autocomplete, jump to definition, refactoring actions etc.

sunaookami• 7 months ago

But what is the benefit for Claude Code? You don't write code in Claude Code so why would I need autocomplete or jump to definition? Does Claude itself use them instead of e.g. grepping? Struggling to understand how it helps.

BeetleB2• 7 months ago

As part of a bigger refactor, you want to rename some variables. With an LSP hook, the LLM can make the change (more) reliably.

The LLM wants to see the definition of a function. More reliable than grepping.

nextworddev• 7 months ago

It’s breathtaking how fast Anthropic / Claude Code team ships.

They are definitely coding in a LLM maximalist way, in a good way.

reilly3000• 7 months ago

I came here just to say that. The commit history on that changelog blew me away.

brianyu8• 7 months ago

I am super bullish on claude code / codex cli + LSP and other deterministic codemod and code intelligence tools.

I was playing around with codex this weekend and honestly having a great time (my opinion of it has 180'd since gpt-5.2(-codex) came out) but I was getting annoyed at it because it kept missing references when I asked it to rename or move symbols. So I built a skill that teaches it to use rope for mechanical python codebase refactors: https://github.com/brian-yu/python-rope-refactor

Been pretty happy with it so far!

shepherdjerred• 7 months ago

Are you having a positive experience with Codex compared to Claude Code? Codex in my brief experience was... not good w/ 5.1

cube22222• 7 months ago

Just to provide another datapoint - tried codex September / October after seeing the glowing reviews here, and it was, all in all, a huge letdown.

It seems to be very efficient context-wise, but at the same time made precise context-management much harder.

Opus 4.5 is quite a magnificent improvement over Sonnet 4.5, in CC, though.

Re tfa - I accidentally discovered the new lsp support 2 days ago on a side project in rust, and it’s working very well.

theshrike79• 7 months ago

It goes like this:

Codex is an outsourcing company, you give specs, they give you results. No communication in between. It's very good at larger analysis tasks (code coverage, health etc). Whatever it does, it does it sloooowwwllyyy.

Claude is like a pair programmer, you can follow what it's doing, interrupt and redirect it if it starts going off track. It's very much geared towards "get it done" rather than maximum code quality.

aschobel• 7 months ago

I’m basically only using the Codex CLI now. I switched around the GPT-5 timeframe because it was reliably solving some gnarly OpenTelemetry problems that Claude Code kept getting stuck on.

They feel like different coworker archetypes. Codex often does better end-to-end (plan + code in one pass). Claude Code can be less consistent on the planning step, but once you give it a solid plan it’s stellar at implementation.

I probably do better with Codex mostly due to familiarity; I’ve learned how it “thinks” and how to prompt it effectively. Opus 4.5 felt awkward for me for the same reason: I’m used to the GPT-5.x / Codex interaction style. Co-workers are the inverse, they adore Opus 4.5 and feel Codex is weird.

__mharrison__• 7 months ago

I've gone it works wonderful for 5.2. I think chatgpt plus is at the top of the weekly AI rolling wars. Most bang for the buck.

frays• 7 months ago

Interesting to see that you work at OpenAI but had to build a skill like this yourself.

Surprised that you don't have internal tools or skills that could do this already!

Shows how much more work there is still to be done in this space.

shermantanktop2• 7 months ago

Cobbler’s children…

voiper1• 7 months ago

My theory is that even if the models are frozen here, we'll still spend a decade building out all the tooling, connections, skills, etc and getting it into each industry. There's so much _around_ the models that we're still working on too.

NitpickLawyer2• 7 months ago

Shows how much more work there is still to be done in this space.

This is why I roll my eyes every time I read doomer content that mentions an AI bubble followed by an AI winter. Even if (and objectively there's 0 chance of this happening anytime soon) everyone stops developing models tomorrow, we'll still have 5+ years of finding out how to extract every bit of value from the current models.

lionkor• 7 months ago

OpenAI engineer fails to rename references because his F2 key has been replaced with the Copilot button?

No LSP support is wild.

shimman3• 7 months ago

This is something I notice often when using these tools (if this is what you are referring too). Like they will grep entire code bases to search for a word rather than search by symbol. I suppose they don't care to fix these types of things as it all adds up to paid tokens in the end.

We have 50 years worth of progress on top of grep and grep is one of the worse ways to refactor a system.

Nice to see LLM companies are ignoring these teachings and speed running into disaster.

rglynn• 7 months ago

I've had a number of occasions where claude (et al.) have incorrectly carried out a task involving existing code (e.g. create a widget for foo, following bar's example). In these cases the way I would have done it would be to copy said existing code and then modify the copied code. I've always wondered if they should just be using copy tool (even just using xclip) instead of using context.

Havoc2• 7 months ago

What does the terminal integration mentioned do?

speed_spread• 7 months ago

Every once in a while it runs 'sudo rm -rf /'.

catoc• 7 months ago

Every once —

sevg• 7 months ago

I believe it’s to do with supporting shift+enter (to do multiline prompts).

https://github.com/anthropics/claude-code/issues/1259#issuec...

Havoc2• 7 months ago

Oh that’s neat. Thanks for highlighting

ramoz4• 7 months ago

I haven't come across a case where it has used the LSP yet.

Opus 4.5 is fairly consistent in running QA at proper times. Lint checks and all are already incorporated into a standard & native processes outside of IDE. I think lookup can be useful when definitions are hidden deep in hard to reach places on my disk... hasn't been a problem though the agent usually finds what it needs.

Anyway, here is what it stated it could do:

    > Do you have access to an lsp tool?

     Yes, I have an LSP tool with these operations:

    - goToDefinition - Find where a symbol is defined
    - findReferences - Find all references to a symbol
    - hover - Get documentation/type info for a symbol
    - documentSymbol - Get all symbols in a file
    - workspaceSymbol - Search for symbols across the workspace
    - goToImplementation - Find implementations of an interface/abstract method
    - prepareCallHierarchy - Get call hierarchy item at a position
    - incomingCalls - Find what calls a function
    - outgoingCalls - Find what a function calls

jama211• 7 months ago

I’m curious what the benefit of this is over running away, cursor ide with the Claude agent?

behnamoh2• 7 months ago

No Python LSPs yet!

simlevesque• 7 months ago

There's pyright-lsp. Isn't this a Python LSP ? or is it lacking important features ?

guessmyname• 7 months ago

1. https://docs.astral.sh/ty/

2. https://github.com/microsoft/pyright

3. https://github.com/python-lsp/python-lsp-server

4. https://github.com/palantir/python-language-server

paxys• 7 months ago

So they moved coding AIs from the IDE into a standalone CLI and now are building an IDE around the CLI?

behnamoh2• 7 months ago

I mean, OpenCode has had this feature for a while: https://opencode.ai/docs/lsp/

jarjoura• 7 months ago

It's a shame that my company tied itself to claude-code way too fast. It was like a single week last summer of, "oh what's everyone's favorite? claude? okay, let's go!"

OpenCode has been truely innovating in this space and is actually open source, and would naturally fit into custom corporate LLM proxies. Yet, now we've built so many unrulely wrappers and tools around claude-code's proprietary binary just to sandbox it, and use it with our proxy, that now I fear it's too late to walk back.

Not sure how OpenCode can break through this barrier, but I'm an internal advocate for it. For hobby projects, it's definitely my goto tool.

gempir• 7 months ago

OpenCode is so underrated.

One of my favorite features is that you can run it as a server, and then it has a API and SDKs to manage sessions etc.

Great to build a centrally managed agent for your team.

stared• 7 months ago

If you want to explore the ecosystem of Claude Code plugins, see https://claude-plugins.dev/

With a fair disclaimer, that it is very easy to vibe-code a skill oneself, with both pros (you can create one just for you!) and cons (if you look online, these are of any quality, quite a few with some hard-coded versions or practices).

CameronBanga• 7 months ago

Maybe I'm the only one, but does anyone else have an issue on macOS where Claude Code never updates itself automatically and you always have an error? I guess it's in times when I leave the CLI tool running and an update comes in overnight. But the alert seems to indicate it should update and fails.

mokkol• 7 months ago

Uninstall it and install it via home brew fixed it for me.

fahrradflucht• 7 months ago

I have the same issue since for ever (and update by hand because of it). I always assumed it is because it gets confused by me using Volta for node/npm version management and Volta‘s shim masking where Claude Code is globally installed.

Arubis• 7 months ago

Depends on your installation method. I have CC installed on macOS with `bun install` and it self-updates. But you could have different results with, oh, npm or yarn or homebrew or nix or probably asdfvm or maybe there’s a native .pkg I don’t know about or…you get the idea.

cube22222• 7 months ago

Yeah, I uninstalled and reinstalled with homebrew, and it’s working well now.

fabbbbb• 7 months ago

Always have a lot of sessions running locally and don’t recall this

pigeonhole123• 7 months ago

I removed the locks directory which fixed it

spullara4• 7 months ago

I really can't understand why JetBrains hasn't integrated its refactoring tools into the AI system. Really missed the boat on making their platform transformational for AI coding. Imagine how much smaller the context would be for a tool that renames a function than editing hundreds of files. This LSP support is a good start but without the mutation functions it is still pretty lackluster. Plus LSPs aren't as good as JetBrains generally.

parpfish• 7 months ago

Jetbrainz needs to give up on Junie and their in house ai and focus on integrating with the established tools. If they don’t, VS code will consume them.

octopoc2• 7 months ago

I really enjoy Junie, I find it working better out of the box than Claude code. I do wish they integrated their amazing refactoring tools into it though.

dvtkrlbs4• 7 months ago

They already kinda did. They brough ACP support which allows you to somewhat integrate Claude Code, Gemini CLI or OpenCode they also recently brought BYOK support so you can use an existing provider and don't pay extra subscription for it.

atombender2• 7 months ago

They've already done that. After the Junie fiasco, they pivoted to "AI Assistant", where Junie is just another provider alongside Anthropic and OpenAI. In theory, you have Claude Code inside Jetbrains IDEs now.

What's incredible is just how bad it works. I nearly always work with projects that mount multiple folders, and the IDE's MCP doesn't support that. So it doesn't understand what folders are open and can't interact with them. Junie the same issue, and the AI Assistant appears to have inherited it. The issue has been open for ages and ignored by Jetbrains.

I also tried out their full line completion, and it's incomprehensibly bad, at least for Go, even with "cloud" completion enabled. I'm back to using Augment, which is Claude-based autocompletion.

bikelang• 7 months ago

Is there something with the Claude code plugin for JB IDEs you don’t like? Is there something the VSCode Claude Code plugin does better?

cedws• 7 months ago

If not VSCode then Zed. It feels like Zed is what they wanted Fleet to be.

anthonypasq4• 7 months ago

there is a jetbrains MCP server that gives Claude Code access to this sort of thing, but I think its still fairly jank and bloats context.

shermantanktop2• 7 months ago

I never got it to work, but in the process of trying it became obvious that it’s an under-resourced feature.

vb-84483• 7 months ago

I think they are completely screwing up the AI integration.

After years of JetBrains PyCharm pro I'm seriously considering switch to cursor. Before supermaven being acquired, pycharm+supermaven was feeling like having superpowers ... i really wish they will manage to somehow catch up, otherwise the path is written: crisis, being acquired by some big corp, enshitification.

spullara4• 7 months ago

augmentcode has a great plugin for pycharm (and all jetbrains products) if you don't want to throw the baby out with the bathwater.

cyberax• 7 months ago

JetBrains has AI support. It's a bit janky right now, but it is definitely getting better.

They have an MCP server, but it doesn't provide easy access to their code metadata model. Things like "jump to definition" are not yet available.

This is really annoying, they just need to add a bit more polish and features, and they'll have a perfect counter to Cursor.

pqn• 7 months ago

I'm biased (work at Cognition) but I think it's worth giving the Windsurf JetBrains plugin a try. We're working harder on polish these days, so happy to hear any feedback.

dist-epoch3• 7 months ago

People keep saying how amazing IntelliJ is at refactoring, but then you realize the talk about "rename thing" and "extract function".

This is 5% of what refactoring is, the rest is big scale re-architecting code where these tools are useless.

The agents can do this big scale architecturing if you describe exactly what you want.

IntelliJ has no moat here, because they can do well 5% of what refactoring is.

spullara4• 7 months ago

I think that the commonly used refactoring functions would make a big difference and right now most IDEs are pretty bad at them (especially across all the languages jetbrains supports):

  - rename variable/function
  - extract variable/function
  - find duplicate code
  - add/remove/extract function parameter
  - inline a function
  - moving code between classes
  - auto imports

Others are used more rarely and can probably be left out but I do think it would save a lot of tokens, errors and time.

Tarean• 7 months ago

Intellij also has structural search and replace, where you can do full subgraph isomorphism search in the code and with patterns like

    $x$.foo($args$)

Where you add filters like x's type is a subclass of some class, and args stands for 0-n arguments.

You can also access the full intellij API via groovy scripts in the filters or when computing replacement variables, if you really want.

Though most of the time built in refactors like 'extract to _' or 'move to' or 'inline' or 'change type signature' or 'find duplicates' are enough.

jtms• 7 months ago

You’re missing the point, it’s about those tools drastically improving context window management. When you want to tackle large refactors, Claude Code will blow tens of thousands of tokens just searching for files and various refactor related file manipulation. When you run out of window in the middle of a big refactor you’re going to have a bad time.

ch2026• 7 months ago

They wanted to, but they’re still waiting for the IDE itself to simply load.

clintonb• 7 months ago

You joke and folks downvote, but this is my biggest issue with WebStorm. I'm seriously considering switching for the first time in 16 years. Zed is quite snappy. The Claude Code integration in VS Code is brilliant. I've used the CLI in the JetBrains terminal. I had no idea I could revisit past conversations until I used the VS Code extension!

eterm2• 7 months ago

I completely agree. Likewise I'm amazed Microsoft hasn't done it themselves for Roslyn and Copilot. Roslyn analyzers are so incredibly powerful, and it's being ignored.

An explainer for others:

Not only can analyzers act as basic linters, but transformations are built right in to them. Every time claude does search-and-replace to add a parameter I want to cry a little, this has been a solved science.

Agents + Roslyn would be productive like little else. Imagine an agent as an orchestrator but manipulation through commands to an API that maintains guard rails and compilability.

Claude is already capable of writing roslyn analyzers, and roslyn has an API for implementing code transformations ( so called "quick fixes" ), so they already are out there in library form.

It's hard to describe them to anyone who hasn't used a similarly powerful system, but essentially it enables transforms that go way beyond simple find/replace. You get accurate transformations that can be quite complex and deep reworks to the code itself.

A simple example would be transforming a foreach loop into a for loop, or transforming and optimizing linq statements.

And yet we find these tools unused with agentic find/replace doing the heavy lifting instead.

Whichever AI company solves LSP and compiler based deep refactoring will see their utility shoot through the roof for working with large codebases.

atmosx• 7 months ago

Is Roslyn available only for .NET?

remus• 7 months ago

In a similar vein, I really struggle to understand why copilot is so crap when writing SQL and I'm connected to the database. The database has so much context (schema names, column names, constraints etc.) yet copilot regularly hallucinates the most basic stuff like table and column names, which standard auto complete has managed fine for the last 20+ years.

neutronicus2• 7 months ago

Same shit, but Microsoft and Visual Studio.

Like, the AI can't jump to definition! What are we fucking doing!?

cog-flex• 7 months ago

I hope your current boss appreciates who they have.

reactordev3• 7 months ago

When you become complacent and your ego isn’t checked, you think you have the hottest thing. Hubris is hard. They had a pretty big moat that they let vscode eat away at. I don’t think they saw any of this coming and are struggling to make sense of it.

dist-epoch3• 7 months ago

They are trying now to create an agent-first IDE. I think they are too big to move on this.

https://blog.jetbrains.com/fleet/2025/12/the-future-of-fleet...

stusmall• 7 months ago

I've been a massive JetBrains fanboy for a bit over a decade. I finally let my subscription lapse this month. It isn't so much about AI integrations but overall competitors have caught up. The rise of LSP and DAP did a lot to shrink their competitive advantage

jayd162• 7 months ago

Where are you getting the concept of ego and hubris from? I don't really see much personification of JB's public facing identity.

conradfr4• 7 months ago

Jetbrains seems a bit lost these days. Look at that very recent screw up [0].

I thought about moving after 10+ years when they abandoned the commit modal, and jacked up the plan prices, but I barely understand how to commit things in Vscode anyway. Let's see in 2026.

[0] https://blog.jetbrains.com/datagrip/2025/12/18/query-console...

_virtu5• 7 months ago

The commit workflow was what kept me locked in to the ecosystem for so long. LazyGit was so good that it convinced me I didn’t need JetBrains anymore. If you love the workflow with JB for commits check out LazyGit. It’s a TUI so you can use it in any editor without much friction.

giancarlostoro• 7 months ago

I have been leaning towards Zed.

sesm• 7 months ago

Did they abandon the commit modal? In 2024 line it's disabled by default (in favor of tool window) but you can enable it back.

thiht• 7 months ago

I barely understand how to commit things in Vscode anyway

Yeah that’s on you not even trying. Source control panel, add files or chunks, write message, commit.

taytus• 7 months ago

I've been a paying user for years. I don't see the point anymore since claude code.

tracker14• 7 months ago

I mostly rely on the CLI for my git operations anyway. It does make it hard to support others who are using the tools (VS/code/jetbrains, etc) though, since I don't really "get" the workflows in the GUI tools at all.

krzyk• 7 months ago

Doesn't Jetbrains MCP (it is built on n, you need just to enable it) provide tool for refactoring?

0x696C6961• 7 months ago

LSP supports refactoring commands

joshribakoff• 7 months ago

But Claude Code does not, which is the point you have missed

WahyuS002• 7 months ago

It really does feel like the Innovator's Dilemma playing out for JetBrains. They have the best semantic understanding of code (PSI) locked away in their proprietary engine, but they seem too attached to the traditional "human-driving-the-IDE" paradigm.

Tools like Claude Code (and Cursor) are treating the editor/CLI as a fluid canvas for the AI, whereas JetBrains treats AI as just a sidebar plugin. If they don't expose their internal refactoring tools to agents soon, the friction of switching to VS Code/CLI becomes negligible compared to the productivity gains of these agents.

_virtu5• 7 months ago

I’ve been a JetBrains toolbox subscriber for over a decade. I used to run trainings for new hires to get them up to speed on the eco system as our team would provide licenses. I say all of this because I was about as fanboy as you could get for them.

They’ve dropped the ball over the past five years. Part of me thinks it was the war in Ukraine that did them in. The quality of tooling and the investment in Fleet and AI slop was the death nell for me. I was slated to renew at the grandfathered price on the 17th and decided to let my subscription lapse this year because the value prop just isn’t strong enough anymore.

porker• 7 months ago

They’ve dropped the ball over the past five years. Part of me thinks it was the war in Ukraine that did them in.

I'm also a subsciber for over a decade, and came here to say the same thing. I don't know how their teams were distributed across eastern Europe and Russia but the war is when I pinpoint quality declining.

I've kept my subscription for now as for PHP and Symfony nothing comes close, but I'm actively looking to move away.

kachapopopow2• 7 months ago

I am trying my damn hardest to drop jetbrains, the only thing they have a stronglehold over is their amazing rust analyzer in rustrover. And yah I agree that they are dropping the ball on providing actual intellisense to AI tools, like why not? It's probably less than 10 lines of code.

cherryteastain• 7 months ago

What does rustrover do that rust-analyzer itself cannot?

whatever1• 7 months ago

Jetbrains is unforgivable for missing the remote development train. People have been developing on remote huge machines for decades. It’s just the ones who did either were terminal wizards, or they were using hacks to make their IDEs tolerable.

VSCode just scooped up that market with their remote development plugin. And it did not matter that it is an electron app. Still faster than Jetbrains.

rurban• 7 months ago

Just customize emacs. Their refactoring and AI packages are good, and it's faster.

wiseowise6• 7 months ago

They’ve also dropped a huge ball with resisting LSP for Kotlin, thinking that they could lock developers into their ecosystem. Well, now (hopefully) it is too late, karma is a b*tch.

troupo• 7 months ago

I really can't understand why JetBrains hasn't integrated its refactoring tools into the AI system.

Because their refactoring tools are not a "slap on a couple of commands and delegate actual work to external code" like LSP? Because their tools are a huge collection of tools deeply integrated into the IDE? Including custom parsers, interpreters and analysers?

raincole• 7 months ago

It's interesting that everyone is saying "please don't shove AI down our throat!". But when a company actually takes this approach (JetBrains IDEs treat AI just as a tool at the sidebar), everyone is like "JetBrains is doomed because it's not agent-native enough."

unfunco• 7 months ago

JetBrains are shoving it down our throats though, I have to uninstall their AI plugin after every IDE update, CoPilot suddenly stopped working? Oh, it's because JetBrains has enabled their AI auto-completion feature and it's broken CoPilot.

coder543• 7 months ago

Your logical fallacy is assuming two different groups of people are the same people, which never leads to productive conversation.

wiseowise6• 7 months ago

It's interesting that everyone is saying "please don't shove AI down our throat!".

Ever thought that two vocal minorities might not overlap, or even represent opinion of a bigger group?

jayd162• 7 months ago

Yeah, I really appreciate that JB has not made an utter mess of my IDE and has not forced anything on me.

lowsong• 7 months ago

They've tried to play it both ways. Not AI enough for the AI fanboys, but want to keep a toe in there for everyone else. They'd be better placed rejecting AI entirely, and then when the bubble pops they'll be well positioned to sweep in and eat VSCode's lunch with a product that actually works.

dostick• 7 months ago

Jetbrains+refactoring - don’t get your hopes up. In Android Studio refactoring was broken for 5+ years and ticket is one of most voted. And nothing happened.

dfaiv2• 7 months ago

Shameless repost - I'm so sad that JetBrains seems to be floundering. VS Code still doesn't match it in little "oh my gosh, how did it know I wanted that" moments, but the whole JB experience is now just so clunky, especially in a modern WSL2/poly-lang env.

https://news.ycombinator.com/item?id=45846798

insane_dreamer2• 7 months ago

can't speak for other languages, but the python LSP in PyCharm is miles ahead of any other lsp out there (and I've tried them all). I give `ty` the best chance of catching up to them, but they're still a ways behind.

johnebgd• 7 months ago

I bought the JetBrains AI last year to support them even though it wasn’t good. It never improved. I didn’t renew. Now, I’m questioning if their tooling is something I’ll even renew at all. All of these AI agents integrate so well into visual studio code…

rkomorn• 7 months ago

Being a JetBrains customer lately feels like watching everybody else race by in their cars while your horse is trying to eat the carrot in a grocery store ad on the side of a bus stop

I get it, horse, you're confused, but we got places to go.

exceptione• 7 months ago

Yes. It is so easy and cheap to refactor in a strongly typed language--no AI needed. And such a waste of electricity, chips, water and money to let some AI model give it a shot. This something we could reliable and correctly do for decades with serious tools and languages.

To this day people still 'refactor' by doing string replacement and hoping for the best. Any serious IDE should just say no to that.

arm7• 7 months ago

One thing you can still do is use Windsurf's agent, Cascade, inside Jetbrains: https://windsurf.com/plugins/jetbrains

MischaPanch• 7 months ago

Fortunately, Serena has recently been extended to use JetBrains instead of LSP (via a plugin), solving exactly this issue. LSP will never be as good as JetBrains' parsers.

https://github.com/oraios/serena#the-serena-jetbrains-plugin

colonCapitalDee• 7 months ago

Great news. I was just starting to explore creating a goto-definition skill for CC, glad I don't have to figure that out now :)

sathish316• 7 months ago

Can you do @ and refer to a method or variable in a file with lsp support? Otherwise, how can lsp context be used in Terminal chat?

teaearlgraycold• 7 months ago

A big use case will be to tell the LLM what the type of an expression is.

hexsprite• 7 months ago

The typescript-lsp (and others?) is missing a critical part of LSPs whcih is the diagnostics for real-time errors and warnings. So you still need to run a linter, tsc, etc. to generate those sadly.

octopoc2• 7 months ago

Seems like SCIP would be a better fit, although not as widely supported by languages I suppose.

0xdeafbeef• 7 months ago

It takse long to regen on big codebases, but yes

anthonypasq4• 7 months ago

I find it so weird that people are so bullish on the CLI form factor when they are literally just adding functionality that IDE based agents get for free. Stuff like improved diff tools and LSP support in the terminal instead of idk... just using a GUI/IDE?

Pretty sure Cursor has had this for a while.

nextaccountic3• 7 months ago

What IDE agent gets access to LSP?

I use Zed and unless there is some MCP server that provides the same thing as the LSP server, the Zed agent won't have access, even though it's in an IDE that supposedly has this information

anthonypasq4• 7 months ago

cursor

joshuacc• 7 months ago

Cursor, Copilot, Roo Code, Cline, among others.

ramoz4• 7 months ago

I just saw a video of non-technical person describing how they use claude code to automate various workflows. They actually tried vscode and then the desktop gui.

Yet they preferred the CLI because it felt "more natural"

With agents, and Claude Code, we are *orchestrating* ... this is an unresolved UI/UX in industry. The same reasons `kubectl` didn't evolve to GUI probably apply here.

It's less about the codebase, more about the ability to conduct anything on the computer - you are closest to that in the terminal. https://backnotprop.com/blog/its-on-your-computer/

scottyah• 7 months ago

There are plenty of GUIs for managing kubernetes, from k9s to redhat's Openshift gui, rancher, Lens, etc

JamesSwift4• 7 months ago

Curious if you have a link to that video. Im trying to bridge the gap of claude code to non technical users and am trying to consume all prior art.

BeetleB2• 7 months ago

For many of us, the plus of the CLI form factor is it doesn't tie us to a particular IDE.

bakies• 7 months ago

Well my editor is in the terminal, so is my chatbot. I dont really want to change to an IDE to use a desktop app and a chatbot that both have half-baked UIs trying to complement each other.

zingar• 7 months ago

IDEs have LSP support because they have a plugin that connects to an LSP server. The plugin is a very small piece of code compared to the language server. Creating a new client is not reinventing the wheel. In fact the entire philosophy of LSP is: one server to many different clients.

CLIs can also have a small piece of code that connects to an LSP server. I don’t see why IDEs should be the sole beneficiary of LSP just because they were the first clients imagined by the LSP creators.

blitz_skull• 7 months ago

I have not yet had an IDE-based agent give anything close to the CLI Claude Code experience.

So until it manages to do that, I’ll keep being bullish on what works.

Jgrubb2• 7 months ago

Including the Claude Code v2 experience in VSCode.

Thank you, whoever added the setting to revert back to the terminal experience.

dustypotato• 7 months ago

Google Antigravity is pretty much close to Claude Code imo

anthonypasq4• 7 months ago

nothing about that is because its a cli app

mrinterweb• 7 months ago

I was hoping LSP support would be implemented. I know there are existing MCP servers that can do something kind of similar, but I doubt the agent would be smart enough to consistently utilize the LSP MCP. Here's hoping for less greps.

mmaunder• 7 months ago

Amazing how long this took. Serena has been doing a not bad job of helping solve this issue. But this has been an obvious built in for agents for some time now. https://github.com/oraios/serena

jedisct1• 7 months ago

Doesn't seem to work with Zig?

dvtkrlbs4• 7 months ago

What boggles my mind is. I've been using OpenCode [1] which had this future for at least 6 months. I sometimes baffled by the slow progress of closed source software. Also highly recommend OpenCode you can also use it with your Claude subscription or Copilot one.

[1] https://opencode.ai/

kbar13• 7 months ago

i'm not sure i agree with the assessment that claude code has been moving slowly... but it is cool that opencode has had this for a while. will def check it out

resize29962• 7 months ago

tbf, OpenCode's development cycle seems pretty fast. If someone announced AGI in the morning, I'd bet they have it integrated by EOD.

I also use OpenCode extensively, but bounce around to test out the other ones.

troyvit• 7 months ago

I just started playing with OpenCode over the weekend after working with aider and aider-ce, and I like a lot of things about it, though I miss some aider features. What other code helpers have you worked with?

jwr3• 7 months ago

I must be doing something wrong, because I can't get OpenCode to actually do anything useful, and not for lack of trying. Claude code gets me great results instantly, opencode (if I can't make it talk to a model, which isn't easy for Gemini) gets me… something, but it's nowhere near as useful as claude code. I don't know why there is so much difference, because theoretically there shouldn't be. Is it the prompt that Anthropic has been polishing in Claude code for so long?

dvtkrlbs4• 7 months ago

I only played with Claude Code briefly but my experience with OpenCode was amazing. My experience it works the best with Claude especially Sonnet models (I use it with Claude Sonnet 4.5 with my Copilot subscription).

rhodysurf• 7 months ago

Claude models in opencode use the Claude code system prompt, are you comparing Claude code to opencode with non anthropic models?

ako2• 7 months ago

There’s a ton of difference provided on top of the LLMs, especially the tools that allow LLMs to engineer their own context, validate generated code, test generate code, research code bases, planners, memory, skills, etc. The difference is night and day: like a brain in a closed jar versus a brain in a mobile human with eyes, ears, mouth and hands.

richardgill88• 7 months ago

Is it the prompt that Anthropic has been polishing in Claude code for so long?

I think so.

The opencode TUI is very good, but whenever I try it again the results are subjectively worse than Claude Code. They have the disadvantage of supporting many more models in terms refining prompts / tool usage.

The Claude Code secret sauce seems to be running evals on real world performance and then tweaking prompts and the models themselves to make it work better.

linkage• 7 months ago

You can move quite fast when you don't have to spend half a week persuading 7 stakeholders that something is worth doing, then spend a week arguing about sprint capacity and roadmap disruptions.

SamDc73• 7 months ago

I do like OpenCode, but I get small bugs here and there like flickering, freezing and sometimes just crash all together.

But their configuration setup is the easiest and best out of all the other CLI tools

khimaros• 7 months ago

preferring open source and provider agnostic tools, i really want to like OpenCode. i used it exclusively for months, but sadly it has major usability issues which switching to Claude Code solved:

- accidental approvals when trying to queue a prompt because of the unexpected popovers - severe performance issues when pending approval (using 100% of all cores) - tool call failures

having used Crush, OpenCode, aider, mistral-vibe, Gemini CLI (and the Qwen fork), and Claude Code, the clear winner is CC. Gemini/Qwen come in second but they do lose input when you decline a requested permission on a tool call.

that said, CC also has its issues, like the flickering problem that happens in some terminals while scrolling executed command output.

mgraczyk• 7 months ago

One answer to questions like this is that Claude Code has orders of magnitude more paying users, so it's more important to get things right and ship carefully

oofbey• 7 months ago

I should know this, but what's LSP? Language Server Protocol - I can read. But what's that?

3836293648• 7 months ago

It's the protocol that VSC made to speak to programs that do code analysis and is the basis of goto definition, autocomplete, refactorings etc.

It's used by most smaller editors so they can backpack off of the efforts languages make to be usable in VSC. (Vim, Emacs, Zed, etc)

jasonjmcghee• 7 months ago

Also diagnostics (errors, warnings), inlay hints like types and parameters, code lens (tiny embedded buttons), symbols, notifications like “document changed”, and more

jwr3• 7 months ago

I've been using https://github.com/isaacphi/mcp-language-server to do pretty much the same thing for quite a while now in Claude code. And it works with clojure-lsp unlike the limited set of plugins available now.

ttoinou• 7 months ago

  Added gift tag pictogram for year-end promotion message

What's that? We all want a promotion on Claude Code!

Lerc• 7 months ago

Does this mean Claude Code can be a consumer of this information or a provider?

Maybe whynotboth.gif?

odie55332• 7 months ago

Is there a way to automatically run tests every file change, like post tool somehow, so that it returns a concise test run back to the LLM every tool use? That seems like it would be useful.

spellboots• 7 months ago

Yes, you can do this with hooks: https://code.claude.com/docs/en/hooks

kristianp• 7 months ago

Back when I was using CC, I had a "mandatory" development workflow that checks if the corresponding test file exists for the changed file, runs tests and runs the test coverage tool for the changed file.

rane2• 7 months ago

You don't want to run tests after every file change, because that will distract Claude from finishing whatever it's doing and add noise to the context window. Of course the tests will be broken if Claude hasn't finished the full change yet.

Running tests makes most sense on the Stop hook event, but personally I've found CLAUDE.md instruction of "Run `just check` after changes" to be effective enough. The Stop hook has the issue that it will run the checks every time Claude stops responding, even after without any changes.

odie55332• 7 months ago

Won't the LSP distract Claude too? I am trying to think of ways to make Claude faster at iterating by reducing tool calls. That always seems to be a bottleneck when it's doing tons of back-and-forth with tool calls.

zby• 7 months ago

LSPs should expose their api through shell commands - then integrating it with any LLM would be trivial. And it would also be very useful for humans.

anamexis5• 7 months ago

You could use a CLI frontend for LSP, e.g. https://github.com/valentjn/lsp-cli

But why would that be better than LLMs using the LSP with a dedicated tool rather than a shell command tool?

wild_egg2• 7 months ago

CLIs don't use context space when unused. I find them almost universally preferable just because of that.

Models get stupid after the first 80-100k tokens are used so keeping bloated tools out of the window unless completely necessary is a pretty hard requirement for effective AI use IMO.

ed_blackburn• 7 months ago

I literally said this three days ago: https://hachyderm.io/@ed_blackburn/115747527216812176

But in all seriousness, LLMs have their strengths but we’re all wasting tokens and burning the planet unnecessarily getting LLMs to work so inefficiently. Use the best tool for the job; make the tools easier to use by LLMs. This mantra is applicable generally. Not just for coding.

grimgrin• 7 months ago

it's likely been on their mind for _a while_

those wanting lsp support in the loop have been using things such as: https://github.com/oraios/serena

dcreater• 7 months ago

I hope in a couple of years the industry would have outgrown this adolescene and we'll all collectively look back at this horribly inefficient and poorly engineered tooling with disdain. We need to as these things are literally causing harm to the planet (energy, water, raw materials, geopolitics)

exac• 7 months ago

The only reason I paid my yearly JetBrains subscription this year was to keep my lower price locked-in. I've been using VS Code all year. I won't renew my JetBrains subscription that I've had since 2009. Sad.

throwaway314155• 7 months ago

How is that relevant?

sixothree• 7 months ago

Serious question, does this mean it will support Roslyn? Or will they "bake their own" version?

desireco42• 7 months ago

OpenCode had this for a while and overall has better and nicer TUI. Having said that, for same models, especially with LSP, some fancy MCPs, mgrep, has been doing really bad job lately for me. Not sure why. I expect it will be resolved soon. Otherwise very happy with it.

Claude Code is also solid and this is welcome improvement.

tdfirth• 7 months ago

No rename symbol? What am I missing? It seems like a no brainer.

fueledbyzaatar• 7 months ago

References + a few extra steps will give you rename symbol. Anthropic is seemingly wanting to experiment with this - so it makes sense to limit the integration points.

brikym• 7 months ago

As far as I know Claude models in VSCode + GitHub Copilot have had this for months now.

esafak4• 7 months ago

How to use this new feature?

Razengan2• 7 months ago

Anthropic/Clause has the absolute worst UX among all the major AI products.

Just try copy-pasting text, say a prompt from a notes app or a text file.

and they completely ignore all complaints. Why would anyone use this crap as opposed to ChatGPT etc.?

aurbxyajwur• 7 months ago

Hard disagree. They have the best UX in the industry

Razengan2• 7 months ago

These comments sound like paid PR.

I literally just gave an example.

I keep AI prompts in Notes for using with different chatbots. You can paste them normally into ChatGPT etc but Claude mangles them up.

Claude doesn't let you buy a subscription from the iOS with an In-App Purchase, you have to enter your card, and then they don't let you remove your payment info. It's just sitting there waiting for the eventual data breach.

Sign in with Apple on iOS, but only Sign In With Google on the web. Guess how you log in on desktop if you signed up on the phone.

They have that "I'm special" syndrome where they think they can ignore the most basic conveniences that every other product does.

(Talking about Claude not Claude Code, but the Claude web UX was so crap and Code's output for Godot so useless that I didn't even bother trusting Code for more than 1 day)

saagarjha• 7 months ago

Has anyone checked that it actually works before posting it here? lol

vexna• 7 months ago

Just a heads up that this is completely broken as of 2.0.76.

Dug through their obfuscated JS and it looks like they forgot to re-add a function call in the LSP manager initialize function that actually adds/indexes the lsp registered from plugins.

helsinki• 7 months ago

It has been in the source code for like two months. I've been using it for a while now.

jonas21• 7 months ago

The cadence of the Claude Code team is pretty impressive. I count 57 releases since 2.0 (which was less than 3 months ago), and most of these had significant new features.

nurettin• 7 months ago

Interesting. I develop two projects and maintain a few. I haven't opened an IDE within the past two weeks. What do you do with an IDE? Stare as code is written, refactored, tested and debugged automatically?

swader9993• 7 months ago

Same here, I'm a bit apprehensive admitting it. Thanks for going first.

synergy20• 7 months ago

dumb question,how to use it? claude is a cli tool,not an editor,why is lsp relevant?

endorphine• 7 months ago

Any idea if this is planned for Codex as well?

trq_• 7 months ago

Hi, work on Claude Code here! Let me know if you have any feedback!

swader9993• 7 months ago

How do I get Claude to start using the LSP? I've got go, kotlin, swift and typescript projects that might benefit.

Jgrubb2• 7 months ago

That tool search tool y'all announced recently - huge upvote for getting that into Claude code.

arianvanp• 7 months ago

I hate everything about the Claude code plugin system. They saw GitHub Actions supply chain Fiasco and said: great let's add hallucinations on top.

It's that bad. It's embarrassingly bad.

No lock files. Nothing. And then most plugins in turn install MCPs from pypi with uvx so you have two layers of no pinning.

It's a supply chain nightmare. It's so bad that I'm ashamed for our industry

pnt12• 7 months ago

Yeah uvx gets abused out of its convenience. uv has many useful features like dev dependencies and inline dependencies, that are much more reliable than uvx.

One tip for in-line dependencies: set a max date to lock your packages - reliable and simple for small scripts.

JamesSwift4• 7 months ago

Nix plus flakes (and optionally devenv) is such a great baseline to operate agents in. So much less thinking about dependencies on various runtime platforms, and you get pinning out of the box.

Doesnt support windows though.

throw-12-162• 7 months ago

and then it runs out of home directory and slurps up your secrets.

its completely asinine to install npm globals these days, especially one that is such a juicy supply chain attack target

terminal512• 7 months ago

Just discovered https://plugins.jetbrains.com/plugin/29174-ide-index-mcp-ser.... Its MCP, but still better than nothing.

liampulles• 7 months ago

What I've wondered about is whether there is a use in having an LLM that operates on AST symbols (or some IR representation) as input and/or output. It would be language specific of course (though maybe using something like MLIR is somewhat portable), but I would think it would result in a higher quality neural network, a reduction in tokens, etc.

throw-12-162• 7 months ago

still distributed as an npm global that runs out of your home directory.

insane way to distribute a core product considering the state of npm.

dfaiv2• 7 months ago

it doesn't seem to mention anything on using the LSP for linting/typechecking? That's what I really want, instead of my unholy combo of post edit hooks and claude.md "PLEASE PLEASE PLEASE run type checking and linting before you think everything is done..."

kristo• 7 months ago

LLMs should operate on the code's AST when possible, and should be trained on code's AST as well

carterschonwald• 7 months ago

Claude code has some hard coded system prompting that materially opposes my working preferences. I work on things that need full context/ at least 50+ percent usage ish reasoning to do stuff correctly. Happily ive a bunch of stuff that helps persist reasoning and opus was very helpful, and hilariously handling the patching as if it was a static linked binary!.

The difference for me was night and day!! A lot of the hard wired prompts on the app are only sane for single shot crud work. Habits and behaviors that would make me loath working with a person doing the same.

PrimalPower• 7 months ago

I've been a JetBrains suscriber for a while, because at the time I saw that I preferred the UI experience over Jetbrains to VSCode. The IDE is well built, they have a better product/user experience team driving and coordinating those changes.

I cannot stand VSCode - even if I configure it to my liking I am unable to make it look or feel the way that makes me feel at home.

I cancelled my subscription a week ago. Yes I still dislike VSCode. But the same product Jetbrains has honed has struggled to integrate with AI agents as well.

I've played with some combination of picking vim/emacs with Claude CLI. I find navigating code a little bit slower since I have trouble building the muscle memory. I've always been big at using my mouse to jump around the file tree.

Configuring LSPs for these text editors and getting things to "just work" takes a little bit more time. I don't know what special sauce is in IntelliJ but for the supported languages, but it took a while for me to be okay with LSPs compared to IntelliJ.

But LLMs and Agents remove a need for a lot of the the advanced IDE features and I've found it better to return back to just treating everything like a text buffer again and using specialized tools to fill in the gaps that were missing with the loss of IntelliJ

m_rcin• 7 months ago

How to configure it? I have LSP running in neovim, but Claude Code writes:

● LSP(operation: "goToDefinition", symbol: "mtz", in: "src/mtz.cpp") ⎿ No LSP server available for file type: .cpp

● No C++ LSP server is configured.

steven_j24• 7 months ago

i think Kiro CLI added while ago and it does support diagnostics and rename symbol

mparis• 7 months ago

Seems like a great feature but am I the only one that still regularly sees the totally broken scrolling bug in CC?

I have churned from CC in favor of codex until the scrolling bug is fixed. There is no set of features that will convince me to switch back until they fix their broken UI.

I haven’t dug into the JS code base but I imagine they will have a hard time matching the performance of the rust based codex.

dejw• 7 months ago

How do I integrate it with Helix Editor?

Claude Code gets native LSP support

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