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  "title": "browser-session-ctl",
  "description": "browser-session-ctl is a Chrome extension plus local sidecar that lets shell commands click, type in, and read your existing logged-in browser session, for use with Claude. Open source: yes (GPL-3.0-or-later); self-hostable; pricing free. Localhost-only, JavaScript, 27 commits.",
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  "one_liner": "browser-session-ctl lets shell commands drive your existing logged-in Chrome session — click, type, read tabs — for use with Claude.",
  "open_source": "yes",
  "self_hostable": "yes",
  "pricing_model": "free",
  "who_its_for": "Someone who wants an agent (e.g. Claude) to act inside their ALREADY-authenticated browser — the real session with their logins and cookies — via shell commands, rather than spinning up a fresh headless browser that has to log in from scratch, and who wants it confined to localhost.",
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    "note": "GPL-3.0-or-later per repo; JavaScript; 27 commits across extension, sidecar, scripts and tests directories with npm setup and docs. Runs locally on 127.0.0.1:8765 and only accepts commands from localhost; exposes click/type/read-tab control of the existing browser session (WebFetch 2026-09-27, github.com/borisreitman/browser-session-ctl)."
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  "caveats": "Verified from the repo README (WebFetch 2026-09-27); no independent testing. Copyleft license (GPL-3.0-or-later) — relevant if you intend to embed it in a closed product. Load-bearing: 0 stars, small project; driving your live, logged-in session is powerful and therefore risky — the localhost-only bind is the stated safety boundary, not an audited guarantee.",
  "lead": "browser-session-ctl is a Chrome extension plus local sidecar that lets shell commands click, type in, and read your existing logged-in browser session, for use with Claude. Open source: yes (GPL-3.0-or-later); self-hostable; pricing free. It is JavaScript, localhost-only, with 27 commits.",
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      "text": "browser-session-ctl is a Chrome extension plus local sidecar that lets shell commands click, type in, and read your existing logged-in browser session, for use with Claude. Open source: yes (GPL-3.0-or-later); self-hostable; pricing free. It is JavaScript, localhost-only, with 27 commits."
    },
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      "text": "browser-session-ctl is a Chrome extension plus local sidecar that lets shell commands click, type in, and read your existing logged-in browser session, for use with Claude. Open source: yes (GPL-3.0-or-later); self-hostable; pricing free. It is JavaScript, localhost-only, with 27 commits.\n\nMost browser-automation tooling for agents launches a fresh headless browser, which then has to authenticate into every site from zero. browser-session-ctl inverts that: a Chrome extension pairs with a local sidecar listening on 127.0.0.1:8765, so shell commands — and the agent driving them — operate inside the browser session you are already signed into, clicking, typing, and reading tabs on the sites as your logged-in self. It only accepts commands from localhost, and the repo carries the extension, sidecar, scripts, and tests with an npm-based setup. Open source: yes (GPL-3.0-or-later); self-hostable; pricing free."
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      "text": "— operate inside the browser session you are already signed into, clicking, typing, and reading tabs on the sites as your logged-in self. It only accepts commands from localhost, and the repo carries the extension, sidecar, scripts, and tests with an npm-based setup. Open source: yes (GPL-3.0-or-later); self-hostable; pricing free.\n\n- GPL-3.0-or-later per repo; JavaScript; 27 commits (extension, sidecar, scripts, tests) with npm setup and docs; binds to 127.0.0.1:8765 and accepts commands from localhost only; controls the existing logged-in session (WebFetch 2026-09-27).\n- Surfaced via studio discovery in the 2026-09-27 pass.\n- Anti-hype note — load-bearing: 0 stars, young; the localhost bind is the stated safety boundary, and driving a live authenticated session is inherently high-trust.\n- Curated from the GTM Stacker signal registry (2026-09-27 pass); license/facts independently verified 2026-09-27."
    },
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        "Why it matters for a GTM stack"
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      "text": "(WebFetch 2026-09-27). - Surfaced via studio discovery in the 2026-09-27 pass. - Anti-hype note — load-bearing: 0 stars, young; the localhost bind is the stated safety boundary, and driving a live authenticated session is inherently high-trust. - Curated from the GTM Stacker signal registry (2026-09-27 pass); license/facts independently verified 2026-09-27.\n\nA lot of GTM work lives behind logins — the CRM, the ad manager, the outreach inbox, the analytics dashboard — where a from-scratch headless browser stalls on auth, MFA, and session state. browser-session-ctl lets an agent act inside the session you have already established, which is exactly what makes routine in-browser GTM chores scriptable. Open source: yes (GPL-3.0-or-later); self-hostable; pricing free. The honest read: this is the powerful-and-dangerous end of agent tooling — you are handing scripted control of your authenticated identity to an agent — so the localhost-only confinement matters, and you would want it pointed at low-stakes tasks first. The GPL-3.0-or-later copyleft is also worth noting if you plan to bundle it into anything you ship closed."
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