Webctl – Browser automation for agents based on CLI instead of MCP
Hi HN, I built webctl because I was frustrated by the gap between curl and full browser automation frameworks like Playwright. I initially built this to solve a personal headache: I wanted an AI agent to handle project management tasks on my company’s intranet. I needed it to persist cookies across sessions (to handle SSO) and then scrape a Kanban board. Existing AI browser tools (like current MCP implementations) often force unsolicited data into the context window—dumping the full accessibility tree, console logs, and network errors whether you asked for them or not. webctl is an attempt…
Webctl – Browser automation for agents based on CLI instead of MCP launched on January 14, 2026 with 134 votes, #236 of 14,585 launches that month and more than 95% of that year's launches.
In plain words
Webctl is a command-line tool for browser automation designed to work with AI agents. It bridges the gap between simple curl commands and full browser frameworks like Playwright by providing Unix-style commands that let users control what data gets passed to language models. Key features include persistent cookie storage for handling single sign-on and a daemon architecture that maintains browser state across sessions. Unlike existing AI browser tools, webctl filters output before it reaches the agent's context window, avoiding information overload from accessibility trees and console logs.
written from the facts on this page · September 2026
From the sources
Browser automation via CLI — for humans and agents - cosinusalpha/webctl
In the maker’s words, at launch
Hi HN, I built webctl because I was frustrated by the gap between curl and full browser automation frameworks like Playwright. I initially built this to solve a personal headache: I wanted an AI agent to handle project management tasks on my company’s intranet. I needed it to persist cookies across sessions (to…
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