Tunelio developer guides
Practical, copy-paste guides for building with the Tunelio YouTube download API — one request returns a direct download URL, with no queues or polling. Pick a guide below, or jump straight to the full API reference.
YouTube Downloader API
Use the Tunelio YouTube downloader API to get direct MP4 and MP3 URLs in one request. cURL, Python, and Node.js examples. 100 free credits.
Read guide →YouTube to MP3 API
Use the Tunelio YouTube to MP3 API to get a direct MP3 URL in one request. cURL, Python, and Node.js examples. 100 free credits, no polling.
Read guide →YouTube to MP4 API
Use the Tunelio YouTube to MP4 API to get a direct MP4 download URL up to 4K in one request. cURL and code examples. 100 free credits.
Read guide →YouTube Metadata API
Use the Tunelio YouTube metadata API to fetch a video title, duration, thumbnail, and every format with file sizes in one request. Free credits.
Read guide →无需维护的 yt-dlp 替代方案
面向生产环境的 yt-dlp 替代方案：Tunelio 是托管的 YouTube 下载 API。无需 PO token、代理或应对封禁——一次请求返回直链。
Read guide →yt-dlp: "Sign in to confirm you're not a bot"
yt-dlp 为何提示 “Sign in to confirm you’re not a bot”，以及如何修复：cookies、PO token、IPv4——或用托管 API 直接绕过。
Read guide →搭建一个下载 YouTube 视频的 Telegram 机器人
搭建一个 Telegram 机器人，用一次 API 调用下载 YouTube 视频——完整 Python 代码，无需 yt-dlp，也无需自建 Bot API 服务器。
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About the Tunelio API
Tunelio is a developer-first YouTube download API. Two endpoints cover everything: GET /info returns a video’s metadata and every available format with exact file sizes, and GET /create returns a direct, signed download URL for the quality you pick — MP4 up to 4K, or MP3 audio. There are no job queues and no polling: the download link comes back in a single request.
Authentication is a Bearer API key, and new accounts get 100 free credits — enough to test both endpoints before choosing a plan. The guides above walk through the most common integrations with copy-paste examples in cURL, Python, and Node.js.