Live VNC for web agents – debugging native captcha on Cloud Run
Hi HN, Bhavani here (rtrvr.ai). We build DOM-native web agents (no screenshot-based vision, no CDP/Playwright debugger-port control). We handle captchas natively including Google reCAPTCHA image challenges by traversing cross-origin iframes and shadow DOM. The latency is high on this one currently. The problem: when debugging image selection captchas ("select all images with traffic lights"), logs don't tell you why the agent clicked the wrong tiles. I found myself staring at execution logs thinking "did it even see the grid correctly?" and realized I just wanted to watch it work. So we…
Live VNC for web agents – debugging native captcha on Cloud Run launched on January 5, 2026 with 12 votes, #893 of 14,584 launches that month and more than 90% of that year's launches.
In plain words
Rtrvr.ai provides live VNC debugging for DOM-native web agents running on Cloud Run. The tool allows developers to watch and take over serverless Chrome workers in real time, addressing the challenge of debugging why agents fail at captcha challenges like image selection. It handles Google reCAPTCHA by traversing cross-origin iframes and shadow DOM without relying on screenshot-based vision. The platform uses session affinity and token-based pairing to ensure deterministic viewer-to-runner connections while keeping runner instances clean.
written from the facts on this page · September 2026
From the sources
Open a live run, intervene when judgment is needed, and keep the agent's execution state intact.
In the maker’s words, at launch
Hi HN, Bhavani here (rtrvr.ai). We build DOM-native web agents (no screenshot-based vision, no CDP/Playwright debugger-port control). We handle captchas natively including Google reCAPTCHA image challenges by traversing cross-origin iframes and shadow DOM. The latency is high on this one currently. The problem…
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