autofirmer-expanded/extension

AutoFirmer Capture (Chromium extension)

Scrapes the firm tab you are looking at and posts its HTML back to the dashboard. There is no on/off switch for that — see Scope below for what limits it instead.

Install (unpacked)

1. Start the dashboard (npm run dev) so http://localhost:3000 is up.
2. Open chrome://extensions, enable Developer mode (top right).
3. Load unpacked → select this extension/ folder.
4. Click the extension icon to open the popup and set:
   • Dashboard URL — default http://localhost:3000. Use the VPS IP if the dashboard runs elsewhere.
   • Poll interval — seconds between status checks (default 3).
   • Element selector — optional CSS selector; matching elements get their on-screen position measured alongside the HTML.

The badge shows ! (red) if the dashboard is unreachable, and nothing otherwise — blank is the working state. Open the popup for what the last tick actually did.

Flow

extension       --GET   /api/autobuyer/status-->  { pendingLocate }
extension       --POST  /api/autobuyer/capture->  html + viewport + element rects
AutoBuyer page  --GET   /api/autobuyer/capture->  renders the HTML

Nothing in that loop is switchable. Every tick serves any queued clicks and then captures the tab you are on.

Scope

Capture has no switch, so scope is what keeps it honest. Three limits, all enforced by Chrome rather than by this code:

1. host_permissions is deliberately narrow — the firm sites plus localhost for the dashboard. The extension is technically incapable of reading any other site, so an accidental capture of your bank or mail tab cannot happen however the logic here is changed.
2. Only the tab you are on. pickTab() asks for the active tab of the last-focused window and a host_permissions match. A firm tab sitting in the background is not captured, and neither is anything else. Switch away and capture simply stops until you switch back.
3. One content script, same hosts. captcha-hook.js runs at document_start on the firm sites only. It wraps turnstile.render / grecaptcha.render / hcaptcha.render and remembers what the page passed them — the sitekey, and above all the callback a solved token has to be handed to, which a programmatically rendered widget puts nowhere else. It reads nothing else and sends nothing anywhere; the remembered arguments stay in the page's own world until a solveCaptcha step comes to collect them.

To automate a different broker, add its pattern to host_permissions in manifest.json and reload the extension — that alone scopes capture to it. Avoid going back to <all_urls>: it would put every tab you visit in reach, and limit 1 is the only thing standing between this and scraping your whole browser. A new firm needs its host in both lists — host_permissions and the content_scripts matches — or captchas on that site will have no callback to fire.

Notes

• The extension never captures the dashboard's own pages — otherwise it would just mirror its own output back.
• chrome://, about: and Web Store pages cannot be scripted by any extension; they're skipped.
• MV3 service workers are torn down when idle. Each poll makes an extension API call, which keeps the worker alive; a 30-second alarm revives it if Chrome kills it anyway. So worst-case cadence is 30s, normal cadence is the poll interval.