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Webctl

Browser automation for agents based on CLI instead of MCP

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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 to solve this with a Unix-style CLI:- Filter before context: You pipe the output to standard tools. webctl snapshot --interactive-only | head -n 20 means the LLM only sees exactly what I want it to see.- Daemon Architecture: It runs a persistent background process. The goal is to keep the browser state (cookies/session) alive while you run discrete, stateless CLI commands.- Semantic targeting: It uses ARIA roles (e.g., role=button name~="Submit") rather than fragile CSS selectors.Disclaimer: The daemon logic for state persistence is still a bit experimental, but the architecture feels like the right direction for building local, token-efficient agents.It’s basically "Playwright for the terminal."

HN · launched Jan 14, 2026 · 134 upvotes (top 7%) · 0 views

Niche: browser automation tools · 71 launches, 2 in the last 7 days · Explore this niche →

Category and tags

  • Horizontal
  • Agent / copilot
  • Developer
  • AI-native
  • Commercial product

Visit website ↗ Source listing ↗

Could you build this?

Yes Webctl is a command-line wrapper around a headless browser engine like Playwright or Puppeteer that handles session cookies and page interactions. Prompting an AI coding assistant can readily create the CLI interface and script the browser automation calls.

Discussion

20 comments analyzed.

Competitors mentioned: Browser Use, code-mode MCP, playwriter plugin, raw HTML approaches with BeautifulSoup

Concerns raised: Context pollution from accumulating invisible state, SPA replayability issues with auto-generated IDs, Raw HTML approach more expensive in tokens, Session isolation edge cases in V1 release

Feature requests: Expose other browser plugin APIs via same CLI, Support controlling existing tabs in main browser instance, Attach to OS daily driver browser instance

Competitors

Other products that read as similar to this one : 508 launches clear the similarity bar, closest 8 shown.

Attention rank: #65 of 509 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 74 days after the earliest competitor.

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