--- title: "Dev Facts Check on ChatGPT: ranks and changes · OpenApps" description: "On Oct 29, 2026, Dev Facts Check is an app on ChatGPT by Agent Tools, ranked #795 in Developer Tools." url: https://theopenapps.com/chatgpt/apps/dev-facts-check --- > AI agents: this is one page of OpenApps as Markdown. https://theopenapps.com/llms.txt maps the site, the API and the MCP server. # Dev Facts Check [Agent Tools](https://theopenapps.com/publishers/agenttools) Developer Tools ChatGPT Apps SDK New [Code search & docs](https://theopenapps.com/tags/codebase-docs) [Web search](https://theopenapps.com/tags/web-search) [Developers](https://theopenapps.com/tags/for-developers) Check the facts a developer asks for again and again: when a software version reaches end of life, whether the runtimes a repository pins are still supported, what an open-source license is, whether a web feature works in a browser, what an RFC says about itself and what changed between two versions of a package. Ask "is Node.js 20 still supported?", "is anything in this repo past end of life?", "is the MIT license OSI approved?", "can I use CSS container queries in Safari?", "which RFC obsoletes RFC 2616?" or "what changed in express between 4.18.2 and 5.1.0?". For a repository, pass the files that pin runtimes (package.json, .nvmrc, .python-version, pyproject.toml, go.mod, a Dockerfile or compose file, .tool-versions, mise.toml, .ruby-version, a Gemfile, composer.json or global.json) and get one row per runtime with its end-of-life date, days left, latest patch and the next supported cycle. It reads five public sources: endoflife.date for release cycles and support dates, the SPDX License List for license identifiers and OSI and FSF status, webstatus.dev for Baseline status and the first browser version that supports a web feature, the RFC Editor and IETF Datatracker for RFC status, abstracts and obsoleting links, and GitHub releases and changelog files for the notes of each release in a version range. Every answer names its source and the date of the data. endoflife.date is maintained by volunteers, so confirm a date with the vendor before a contract or compliance decision. A license answer identifies a license and does not say what it lets you do: it is not legal advice. It does not scan packages for vulnerabilities or health: use the Package Health Check plugin for that. It stores nothing about you: answers are cached for a few hours and the only lasting record is a daily count of calls per tool. [Open in ChatGPT](https://chatgpt.com/plugins/plugin%5Fasdk%5Fapp%5F6ac270d84d308191a705ef6dcfa59c9d?open%5Fin%5Fapp) [Website](https://tools.openkrill.app/) [Top rank now #795 24 down · 1d Developer Tools](https://theopenapps.com/chatgpt/apps/dev-facts-check?tab=ranks&slug=category%3Adeveloper-tools) [Peak (14d) #747 Developer Tools](https://theopenapps.com/chatgpt/apps/dev-facts-check?tab=ranks&slug=category%3Adeveloper-tools) First listed Oct 28, 2026 [Overview](https://theopenapps.com/chatgpt/apps/dev-facts-check) [Ranks](https://theopenapps.com/chatgpt/apps/dev-facts-check?tab=ranks) [Changes](https://theopenapps.com/chatgpt/apps/dev-facts-check?tab=changes) ## Where it stands [Developer Tools #795 24 down · 1d NEW to the chart Peak #747 in 14d](https://theopenapps.com/chatgpt/apps/dev-facts-check?tab=ranks&slug=category%3Adeveloper-tools) ## Starter prompts * Is Node.js 20 still supported, and when does it reach end of life? * Is the MIT license OSI approved? * Can I use CSS container queries in Safari? ## Details Developer [Agent Tools](https://theopenapps.com/publishers/agenttools) Category Developer Tools Kind Apps SDK Version 1.2.0 Sign-in On install Capabilities Shows whether a version of a product has reached end of life, with its end-of-life and LTS dates, Lists the release cycles of a product that are still supported, newest first, with the latest patch, Reads the runtime pins in a repo (Node.js, Python, Go, Ruby, PHP, .NET, Docker images) and flags any past end of life, Looks up an SPDX license by identifier or name: OSI approved, FSF free, deprecated or not, Shows the first release of each major browser that supports a web feature, and its Baseline status, Looks up an RFC by number or title words: status, abstract, and the RFCs that obsolete or update it, Lists the GitHub release notes of an npm or PyPI package between 2 versions and flags breaking changes, Names the source and the date of its data in every answer Created Oct 4 Website [tools.openkrill.app](https://tools.openkrill.app/) Privacy [tools.openkrill.app](https://tools.openkrill.app/privacy) Listing ID plugin\_asdk\_app\_6ac270d84d308191a705ef6dcfa59c9d ## Launch lag 24 d Oct 4 → Oct 28 ## Badge ```markdown [![Listed on OpenApps](https://theopenapps.com/badge/chatgpt/apps/dev-facts-check.svg)](https://theopenapps.com/chatgpt/apps/dev-facts-check) ```