How is this different from the GitDealFlow Chrome Extension?

The Chrome Extension overlays signal on Crunchbase and Wellfound profiles. The bookmarklet works on github.com pages — the place where engineering momentum actually shows up first. Use both, or pick whichever matches where you scout deal flow today.

Does the bookmarklet send my browsing data anywhere?

No. The bookmarklet only reads the current github.com URL when you click it, then opens a popup window pointing at signals.gitdealflow.com with the org and repo as URL params. It does not run any background scripts, does not track navigation, and only executes when you click the bookmark.

Does it work in Firefox / Safari / Arc?

Yes. Bookmarklets are vanilla JavaScript saved as a bookmark, so they work in every modern browser — Chrome, Firefox, Safari, Edge, Brave, Arc, Opera, Comet, Vivaldi. No extension store review required.

What happens if the repo isn't tracked yet?

You'll see an Untracked card with a Predict button. Lock in a forward call — if the repo is later validated and raises in the next 6 months, you get credit on the Scout leaderboard.

One-drag install · zero extensions

See investor signal on every github.com page

Drag the orange button below to your bookmarks bar. Click it on any GitHub profile or repo. A live momentum + Scout Score card opens in a side window. Free, works in every browser, no extension store review.

Step 1 · Drag this button to your bookmarks bar

GitDealFlow Signal

Hold mouse down on the orange button → drag it up onto your bookmarks bar → release. That’s it.

Step 2 · Click it on any github.com page

→Visit any GitHub profile (e.g. github.com/anthropics) or repo page.
→Click the GitDealFlow Signal bookmark on your bar.
→A side window opens with momentum tier, commit velocity change, contributor growth, and a one-click Predict their next round button.

Can’t see your bookmarks bar?

Chrome / Edge / Brave / Comet: press ⌘ Shift B (Mac) or Ctrl Shift B (Win/Linux).
Firefox: right-click the toolbar → Bookmarks Toolbar → Always Show.
Safari: View menu → Show Favorites Bar.
Mobile / no bar: copy the source below and create a bookmark manually with this as the URL.

Bookmarklet source (copy if drag fails)

javascript:(function()%7Bvar%20u%3Dlocation%3Bif(u.hostname.indexOf('github.com')%3D%3D%3D-1)%7Bif(confirm('GitDealFlow%20Signal%20works%20on%20github.com%20pages.%5CnOpen%20the%20GitDealFlow%20homepage%20instead%3F'))%7Bwindow.open('https%3A%2F%2Fsignals.gitdealflow.com%3Futm_source%3Dbookmarklet%26utm_medium%3Doffsite'%2C'_blank')%3B%7Dreturn%3B%7Dvar%20p%3Du.pathname.split('%2F').filter(Boolean)%3Bif(p.length%3C1)%7Balert('Open%20a%20GitHub%20user%20or%20repo%20page%20first.')%3Breturn%3B%7Dvar%20o%3Dp%5B0%5D%2Cr%3Dp%5B1%5D%3Bvar%20t%3Dr%3F'https%3A%2F%2Fsignals.gitdealflow.com%2Fmomentum%2F'%2BencodeURIComponent(o)%2B'%2F'%2BencodeURIComponent(r)%2B'%3Futm_source%3Dbookmarklet%26utm_medium%3Dgithub_repo'%3A'https%3A%2F%2Fsignals.gitdealflow.com%2Freceipts%2F'%2BencodeURIComponent(o)%2B'%3Futm_source%3Dbookmarklet%26utm_medium%3Dgithub_profile'%3Bwindow.open(t%2C'gitdealflow'%2C'width%3D460%2Cheight%3D720%2Cresizable%3Dyes%2Cscrollbars%3Dyes')%3B%7D)()%3B

Got it installed?

Brag a little. Help us spread it.

The bookmarklet works for everyone, but only if they hear about it. One tweet helps a lot.

Tweet about it

Repo owners

Drop a Scout Score badge in your README →

Want it for Crunchbase + Wellfound too?

Get the Chrome Extension →

The bookmarklet is vanilla JavaScript. It only runs when you click it, only reads the github.com URL you’re currently on, and only opens a popup. No background scripts, no telemetry, no install state.

javascript:(function()%7Bvar%20u%3Dlocation%3Bif(u.hostname.indexOf('github.com')%3D%3D%3D-1)%7Bif(confirm('GitDealFlow%20Signal%20works%20on%20github.com%20pages.%5CnOpen%20the%20GitDealFlow%20homepage%20instead%3F'))%7Bwindow.open('https%3A%2F%2Fsignals.gitdealflow.com%3Futm_source%3Dbookmarklet%26utm_medium%3Doffsite'%2C'_blank')%3B%7Dreturn%3B%7Dvar%20p%3Du.pathname.split('%2F').filter(Boolean)%3Bif(p.length%3C1)%7Balert('Open%20a%20GitHub%20user%20or%20repo%20page%20first.')%3Breturn%3B%7Dvar%20o%3Dp%5B0%5D%2Cr%3Dp%5B1%5D%3Bvar%20t%3Dr%3F'https%3A%2F%2Fsignals.gitdealflow.com%2Fmomentum%2F'%2BencodeURIComponent(o)%2B'%2F'%2BencodeURIComponent(r)%2B'%3Futm_source%3Dbookmarklet%26utm_medium%3Dgithub_repo'%3A'https%3A%2F%2Fsignals.gitdealflow.com%2Freceipts%2F'%2BencodeURIComponent(o)%2B'%3Futm_source%3Dbookmarklet%26utm_medium%3Dgithub_profile'%3Bwindow.open(t%2C'gitdealflow'%2C'width%3D460%2Cheight%3D720%2Cresizable%3Dyes%2Cscrollbars%3Dyes')%3B%7D)()%3B