Instinct AI Introduces Secure Phone-Based Website Logins for Agents
Users log into sites via phone webview so session cookies transfer to the agent.
Ronith posted that Instinct built a phone-based method for signing agents into websites. The process opens a webview on the user's device for login, then moves the resulting cookies to the agent's system. Multiple replies note that passwords stay off the agent side entirely. Users including Xiaoyin Qu and Kushal Byatnal highlighted reliable Google sign-ins to services such as LinkedIn and Notion, parallel task handling, and proactive behavior. Other posts observed that some sites may still block the logins or flag IP shifts.
We built the most secure, simple way to sign an agent into websites from your phone. The agent never receives your password. Not in the chat, not in the logs. This works across all sites, and any sign in patterns.
Instinct AI Introduces Secure Phone-Based Website Logins for Agents
Users log into sites via phone webview so session cookies transfer to the agent.
Ronith posted that Instinct built a phone-based method for signing agents into websites. The process opens a webview on the user's device for login, then moves the resulting cookies to the agent's system. Multiple replies note that passwords stay off the agent side entirely. Users including Xiaoyin Qu and Kushal Byatnal highlighted reliable Google sign-ins to services such as LinkedIn and Notion, parallel task handling, and proactive behavior. Other posts observed that some sites may still block the logins or flag IP shifts.
We built the most secure, simple way to sign an agent into websites from your phone. The agent never receives your password. Not in the chat, not in the logs. This works across all sites, and any sign in patterns.
Reactions
7 postsRH 
Romain Huet@romainhuetWebMCP is exciting for the agentic web: you can expose tools directly to agents without changing your website or the normal UI for people. Want to try it? Just ask Codex to add WebMCP support to the website or app you’re building!…
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RR Ricci Research@ricci_novNot receiving the password is a much weaker claim than it sounds — a live session cookie is the password for the duration it's valid, and it skips MFA on the way in. "Surprised no one did this before" has an answer: session-token exfiltration is the exact pattern that…
BS Bhargav Shivarthy@bshivarthy@benscharfstein It’s killer. I’m building @synorb so asked it to build a daily brief after reading hundreds of VC blogs or thousands of private and public company blogs using the content feeds we build specifically for agents. It self provisioned and started working like a…
DE Darian Edwards ᯅ@darianedwards@dsllwn this is exactly what i'm building. one place that decides which agents can use which accounts, what they can do, and for how long, without handing them your password. you can turn it off anytime.
AM Anthony Morris ツ@amorriscode@kushalbyatnal Agree with these but it’s really the browser and cron that seem to really set it apart from previous attempts. It’s been useful to me with little effort which is magical.
LE Letsbuildmore@letsbuildmore@kushalbyatnal so, my take is Instinct doesn't have pmf. What we are calling pmf is VC and tech bros using it and falling over it. There is no actual non tech consumer that has used it.