{"type":"post","id":"telegram-has-published-widget-sandbox-an-open-source-d45892","slug":"telegram-has-published-widget-sandbox-an-open-source-d45892","title":"Telegram has published widget-sandbox, an open-source framework for running small HTML widgets inside","description":"Telegram has published widget-sandbox, an open-source framework for running small HTML widgets inside Telegram messages.","retrieval_nugget":"Telegram has published widget-sandbox, an open-source framework for running small HTML widgets inside Telegram messages. Its defining choices are a strict feature profile, isolated JavaScript execution, and host-side validation, giving client teams a concrete implementation path for interactive message content without treating each widget as a full web page.","published_at":"2026-11-07","updated_at":"2026-11-07","record_date":"2026-11-07","date_kind":"published_at","topics":["sandbox","open-source"],"entities":["Telegram","widget-sandbox","QuickJS","TelegramWidget"],"related_patterns":["agent-security-moves-to-runtime-boundaries"],"novelty_label":"new_fact","what_changed":"Telegram has published widget-sandbox, a tool for creating and testing HTML widgets embedded in messages.","prior_refs":[],"source_url":"https://github.com/TelegramMessenger/widget-sandbox","source_urls":["https://github.com/TelegramMessenger/widget-sandbox"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:telegram-has-published-widget-sandbox-an-open-source-d45892","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/telegram-has-published-widget-sandbox-an-open-source-d45892/","markdown":"https://newruntime.com/posts/telegram-has-published-widget-sandbox-an-open-source-d45892.md","json":"https://newruntime.com/posts/telegram-has-published-widget-sandbox-an-open-source-d45892.json"},"markdown_url":"https://newruntime.com/posts/telegram-has-published-widget-sandbox-an-open-source-d45892.md","next_reads":[{"type":"topic","path":"/topics/sandbox/","url":"https://newruntime.com/topics/sandbox/","title":"Sandbox","reason":"Explore the sandbox topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/sandbox.md","json_url":"https://newruntime.com/topics/sandbox.json"},{"type":"topic","path":"/topics/open-source/","url":"https://newruntime.com/topics/open-source/","title":"Open Source","reason":"Explore the open-source topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/open-source.md","json_url":"https://newruntime.com/topics/open-source.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}