# Runtime Version Check > Research and verify the latest versions of programming language runtimes (Node, Bun, Deno, Python, Go, etc.) using a two-phase verification process that prioritizes accuracy over speed. Use when this capability is needed. - Skill: `tomevault-io/runtime-version-check` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/runtime-version-check` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/runtime-version-check/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Research & Search - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/runtime-version-check --- # Runtime Version Check A systematic process for researching and verifying the latest versions of programming language runtimes. This skill prioritizes **accuracy over speed**. ## When to Use This Skill Use this skill when the user: - Asks about the latest version of a programming runtime - Needs to verify current runtime versions for upgrades - Wants a comprehensive overview of runtime versions - Asks to check if their runtime versions are up to date ## Supported Runtimes & Authoritative Sources | Runtime | Primary Source (MUST verify here) | Secondary Source | |---------|----------------------------------|------------------| | **Bun** | https://github.com/oven-sh/bun/releases | https://bun.sh | | **C++** | https://isocpp.org/std/status | https://en.cppreference.com | | **Dart** | https://dart.dev/get-dart/archive | https://github.com/dart-lang/sdk/tags | | **Deno** | https://github.com/denoland/deno/releases | https://deno.com | | **Dotnet (.NET)** | https://dotnet.microsoft.com/en-us/download/dotnet | https://github.com/dotnet/core/releases | | **Flutter** | https://docs.flutter.dev/release/release-notes | https://github.com/flutter/flutter/tags | | **Go** | https://go.dev/dl/ | https://github.com/golang/go/tags | | **Java** | https://www.oracle.com/java/technologies/downloads/ | https://www.java.com/releases/ | | **Kotlin** | https://github.com/JetBrains/kotlin/releases | https://kotlinlang.org/docs/releases.html | | **Node** | https://github.com/nodejs/node/releases | https://nodejs.org/en/about/previous-releases | | **PHP** | https://github.com/php/php-src/releases | https://www.php.net/supported-versions.php | | **Python** | https://www.python.org/downloads/ | https://github.com/python/cpython/tags | | **Ruby** | https://github.com/ruby/ruby/releases | https://www.ruby-lang.org/en/downloads/releases/ | | **Swift** | https://www.swift.org/install/ | https://github.com/swiftlang/swift/releases | ## Process ### Phase 1: Initial Research (Web Search) Use web searches to gather initial version information and context. This provides: - Recent release announcements - Changelog highlights - Upcoming version information - General context about the runtime **Search query pattern:** `" latest version release "` **Example searches:** ``` Bun runtime latest version release 2026 Go golang latest version release 2026 .NET dotnet latest version release 2026 ``` **Important:** Treat all information from Phase 1 as UNVERIFIED. Do not use these versions in the final output without Phase 2 verification. ### Phase 2: Direct Source Verification (REQUIRED) For EACH runtime, fetch the authoritative source directly using WebFetch. This is the critical step that ensures accuracy. #### Verification Commands Run these WebFetch calls to verify each runtime: **JavaScript/TypeScript Runtimes:** - `WebFetch: https://github.com/oven-sh/bun/releases` - Prompt: "What is the latest release version number and date?" - `WebFetch: https://github.com/denoland/deno/releases` - Prompt: "What is the latest release version number and date?" - `WebFetch: https://github.com/nodejs/node/releases` - Prompt: "What is the latest release version number and date?" **Systems Languages:** - `WebFetch: https://go.dev/dl/` - Prompt: "What is the latest stable Go version available for download?" - `WebFetch: https://github.com/ruby/ruby/releases` - Prompt: "What is the latest release version number and date?" - `WebFetch: https://github.com/swiftlang/swift/releases` - Prompt: "What is the latest release version number and date?" **JVM Languages:** - `WebFetch: https://www.oracle.com/java/technologies/downloads/` - Prompt: "What is the latest Java JDK version available for download?" - `WebFetch: https://github.com/JetBrains/kotlin/releases` - Prompt: "What is the latest stable release version number and date?" **Web/Scripting Languages:** - `WebFetch: https://github.com/php/php-src/releases` - Prompt: "What is the latest release version number and date?" - `WebFetch: https://www.python.org/downloads/` - Prompt: "What is the latest stable Python version available for download?" **Mobile/Cross-Platform:** - `WebFetch: https://docs.flutter.dev/release/release-notes` - Prompt: "What is the latest stable Flutter version?" - `WebFetch: https://dart.dev/get-dart/archive` - Prompt: "What is the latest stable Dart SDK version listed?" **Framework/Platform:** - `WebFetch: https://dotnet.microsoft.com/en-us/download/dotnet` - Prompt: "What is the latest .NET version available?" **Standards (not runtime):** - `WebFetch: https://isocpp.org/std/status` - Prompt: "What is the current C++ standard and what is the upcoming standard?" ### Phase 3: Cross-Reference Discrepancies If Phase 1 (web search) and Phase 2 (direct fetch) show different versions: 1. **Always trust Phase 2** (direct source) 2. Document the discrepancy for awareness 3. The web search version is likely cached/outdated **Common discrepancy patterns:** - Patch versions differ (e.g., 1.3.7 vs 1.3.8) - releases happened between search index updates - Minor versions differ - search results are significantly outdated - Major versions differ - search results are severely outdated, investigate further ### Phase 4: Compile Results Create the output with: 1. **Summary table** - Quick reference with version, date, and notes 2. **Detailed sections** - Per-runtime information including: - Exact version number - Release date (if available) - Key highlights/features - Upcoming releases - Link to authoritative source 3. **Verification sources table** - List all primary sources for future reference ## Output Template ```markdown # Latest Runtime Versions *Last updated: * *Verified from official GitHub releases and download pages* | Runtime | Latest Version | Release Date | Notes | |---------|---------------|--------------|-------| | **Bun** | x.x.x | | | ... --- ## Detailed Information ### - **Version:** x.x.x - **Release Date:** - **Highlights:** - **Upcoming:** - **Source:** []() ... --- ## Verification Sources | Runtime | Primary Source | |---------|---------------| | Bun | https://github.com/oven-sh/bun/releases | ... ``` ## Troubleshooting ### GitHub says "There aren't any releases here" Some projects don't use GitHub Releases. Try: 1. Check the `/tags` page instead of `/releases` 2. Use the official website download page 3. Check the project's CHANGELOG.md file **Known projects without GitHub Releases:** - Go (golang/go) - Use https://go.dev/dl/ - Python (python/cpython) - Use https://www.python.org/downloads/ - Dart (dart-lang/sdk) - Use https://dart.dev/get-dart/archive - Flutter - Use https://docs.flutter.dev/release/release-notes ### Version shows as "calculating" or dynamic Some pages load versions via JavaScript. Try: 1. Check the archive/downloads page instead 2. Look for version mentioned in page footer ("reflects version X.X.X") 3. Use the GitHub releases/tags as backup ### Multiple version tracks (LTS vs Current) Document both when relevant: - **Current/Latest:** The newest version with latest features - **LTS (Long Term Support):** Stable version recommended for production Example runtimes with dual tracks: - Node.js (Current + LTS) - .NET (STS + LTS) - Java (Latest + LTS) ## Execution Notes - **Parallel execution:** Phase 1 searches and Phase 2 fetches can run in parallel batches (7 at a time is reasonable) - **Freshness:** Runtime versions can change daily for active projects. Always re-verify if accuracy is critical. - **C++ is special:** C++ is a standard, not a runtime. Report the current ISO standard (e.g., C++23) and upcoming standard (e.g., C++26). - **Patch versions matter:** Don't round versions. 8.5.1 is different from 8.5.0. --- > Source: [open-runtimes/open-runtimes](https://github.com/open-runtimes/open-runtimes) — distributed by [TomeVault](https://tomevault.io).