Code breaks, fix it faster

Application monitoring software considered “not bad” by millions of developers.

Get startedSee how in sandbox
Errors
// checkout.js:6559
return new Error('process $code');
const u = getUser();
Replays
⚡ Seer
ReferenceError
Reasoning
Root cause
User submits form
Components

Developer first. Actually helpful.

Error Monitoring

See the exact line, request and release that broke — with full stack traces.

Session Replay

Watch a video-like reproduction of what the user did before the crash.

Seer ⚡

AI root-cause analysis suggests the fix and opens the PR. Lime is the AI accent.

Controls

White pills, purple chrome

Get started Get demo Sandbox Sign in Disabled violet chip Seer / AI
Search issues… Violet focus ring

Primary buttons are white pills (#fff bg, #1f1633 text), radius 8px, Rubik 14/700 at +0.2px tracking. The demo button is a pink outline; focus rings are violet #7553ff.

Typography

Dammit Sans display, Rubik everywhere else

Display · Dammit Sans · 88/106 · 700Code breaks, fix it
Section · Rubik · 34 · 700Developer first.
Body / subhead · Rubik · 20-24 · 400Not bad, by millions of developers.
Button / nav · Rubik · 14 · 700 · +0.2pxGet Started · Pricing
Code · IBM Plex Mono · 13 · 400return new Error(msg)
Palette

Deep purple, one violet, pink & lime accents

Surfaces
bg-deep#150f23
bg#1f1633
surface#2d2340
surf-violet#422082
purple-mid#4e2a9a
Text
white#ffffff
text-70255/.7
muted#d4d4d4
Accents
violet#7553ff
indigo#6a5fc1
pink#fd44b0
lime#c2ef4e
Code syntax (GitHub-dark)
code-fg#e1e4e8
red#f97583
blue#9ecbff
purple#b392f0
green#85e89d
comment#6a737d
Depth & motion

Radii, glow & the hero gradient

8px button
12px card
18px panel
full pill
card shadow
0 20px 50px -20px /.6
hero gradient
120deg red→magenta→violet
warm gradient
#fa7faa→#ffb287

Motion: hover micro-transitions on color/opacity/transform; product cards & mascots animate on scroll. Background is a grainy noise texture over deep purple.