{"slug": "intellij-idea-goes-lsp-java-and-kotlin-intelligence-comes-to-vs-code-cursor-and", "title": "IntelliJ IDEA Goes LSP: Java and Kotlin Intelligence Comes to VS Code, Cursor, and Agentic Flows", "summary": "JetBrains announced that IntelliJ IDEA's Java and Kotlin intelligence is now available as a preview extension for third-party editors, starting with VS Code and its forks such as Cursor. The Java & Kotlin by IntelliJ IDEA extension is free during the preview phase, with each build limited to 30 days, and will require an IntelliJ IDEA Ultimate license after the preview period. The extension supports Maven, Gradle, and Bazel, and aims to improve agentic workflows like Claude Code and Codex.", "body_md": "## IntelliJ IDEA\n\nIntelliJ IDEA – the Leading IDE for Professional Development in Java and Kotlin\n\n[News](/idea/category/news/)\n\n# IntelliJ IDEA Goes LSP: Java and Kotlin Intelligence Comes to VS Code, Cursor, and Agentic Flows\n\nIt’s no secret that agentic development is changing how developers build software. As agents take on more and more of the implementation work, developers spend less and less time manually editing code.\n\nFor this manual work, they might only need a basic, narrow set of features that IDEs provide, like navigating to declarations, finding references, some simple code completion, or renaming.\n\nThese features are generally covered by the [Language Server Protocol (LSP)](https://en.wikipedia.org/wiki/Language_Server_Protocol), which allows programming language support to be implemented once and then reused by any LSP-capable IDE or editor.\n\nEven agents can make use of LSP servers today, leading to faster and more deterministic results and, eventually, reduced token consumption.\n\nIn response to these changes, we’ve been working hard at JetBrains to offer IntelliJ IDEA’s smart language features for Java and Kotlin in an LSP format.\n\n**Today, we’re happy to announce that IntelliJ IDEA’s Java and Kotlin intelligence is available in a preview extension for third-party editors, starting with VS Code and its forks (such as Cursor).**\n\nWe have also been running internal trials and experiments with a select few external customers, and the results have shown that the same LSP functionality can significantly improve terminal-based agentic workflows, like with Claude Code or Codex. We will share the very promising results of these experiments soon.\n\n**Introducing the VS Code extension**\n\nThe **Java & Kotlin by IntelliJ IDEA extension** is now available, powered by IntelliJ IDEA’s Java and Kotlin language technology. It brings a focused set of capabilities to VS Code-based editors, including:\n\n- Java, Kotlin, and mixed-language project support.\n- Smart code completion, navigation, and code analysis.\n- Refactorings and editor assistance.\n- Support for Maven, Gradle, and Bazel.\n- Fast and reliable performance, even for large projects and monorepos.\n\nYou can find the full list of features in our [documentation](https://www.jetbrains.com/help/intellij-vscode/About-instance.html).\n\n**Getting started**\n\nYou can install the Java & Kotlin by IntelliJ IDEA extension from the Visual Studio Marketplace and the Open VSX registry.\n\n**Install from Visual Studio Marketplace**\n\n**Install from Open VSX registry**\n\nAfter installation, open your Java or Kotlin projects in VS Code or Cursor.\n\nThe extension will start analyzing your projects, import the ones that have Maven, Gradle, or Bazel build files, and then enable Java and Kotlin language features in the editor for you.\n\n**Compatibility notice**\n\nJava & Kotlin by IntelliJ IDEA includes code analysis features and quick-fixes that overlap with Red Hat’s and Oracle’s extensions for Java. To avoid confusion, we recommend disabling those extensions while testing.\n\n**Licensing**\n\nDuring the preview phase, the extension **is free to use**. Each build is limited to 30 days.\n\nAfter the preview period, using the extension will require an IntelliJ IDEA Ultimate license.\n\nThe same license will let you use IntelliJ IDEA’s Java and Kotlin capabilities whether you are working in the IntelliJ IDEA desktop IDE, in VS Code-based editors, or in other supported environments. You can review the pricing options [here](https://www.jetbrains.com/idea/buy/?section=commercial&billing=yearly).\n\n**What’s next**\n\nThe VS Code extension is just one milestone in a longer development journey to bring the intelligence of IntelliJ IDEA to our users wherever they are.\n\nWe strongly believe the best way to do Java and Kotlin development is inside IntelliJ IDEA. At the same time, we recognize that teams may have practical reasons to work in other environments, with other editors and tools. Wherever you choose to work, we want you to benefit from IntelliJ IDEA’s Java and Kotlin intelligence.\n\nTo this end, we’re already working on supporting fully agentic, terminal-based workflows. In the near future, we’ll share our initial results (think: reduced token consumption), and we’ll give you a chance to try out our agent plugins when they’re ready.\n\n**Feedback and support**\n\nWe are eager to hear what you think.\n\nPlease share feedback with us about what works well, what doesn’t, and which capabilities you would like to see next.\n\nYou can leave a comment here or [submit a request to us](https://intellij-support.jetbrains.com/hc/en-us/requests/new?ticket_form_id=66731&product=intellij_for_vs_code).\n\nYour feedback during this preview phase will directly shape the extension as we move toward a stable 1.0 release.\n\nThank you!\n\n[Get the extension: Visual Studio Marketplace](https://marketplace.visualstudio.com/items?itemName=JetBrains.intellij-server)\n\n[Get the extension: Open VSX registry](https://open-vsx.org/extension/JetBrains/intellij-server)\n\n#### Subscribe to IntelliJ IDEA Blog updates", "url": "https://wpnews.pro/news/intellij-idea-goes-lsp-java-and-kotlin-intelligence-comes-to-vs-code-cursor-and", "canonical_source": "https://blog.jetbrains.com/idea/2026/08/intellij-idea-goes-lsp/", "published_at": "2026-08-04 10:48:16+00:00", "updated_at": "2026-08-04 12:26:26.015961+00:00", "lang": "en", "topics": ["developer-tools", "artificial-intelligence"], "entities": ["JetBrains", "IntelliJ IDEA", "VS Code", "Cursor", "Claude Code", "Codex", "Maven", "Gradle"], "alternates": {"html": "https://wpnews.pro/news/intellij-idea-goes-lsp-java-and-kotlin-intelligence-comes-to-vs-code-cursor-and", "markdown": "https://wpnews.pro/news/intellij-idea-goes-lsp-java-and-kotlin-intelligence-comes-to-vs-code-cursor-and.md", "text": "https://wpnews.pro/news/intellij-idea-goes-lsp-java-and-kotlin-intelligence-comes-to-vs-code-cursor-and.txt", "jsonld": "https://wpnews.pro/news/intellij-idea-goes-lsp-java-and-kotlin-intelligence-comes-to-vs-code-cursor-and.jsonld"}}