Agents that crawl, test, and fix your UX.

Crawls every flow as synthetic users, ships fixes as PRs, keeps your coding agents grounded in how the product actually works.

Buildbox syncs with your analytics stack to run usability tests across every user flow, ships fixes without engineering overhead, and turns every finding into living product context that keeps your coding agents grounded in how your product actually works.

Sign up for our waitlist
3 PRs shipped last night
62% drop-off
crawl #847
app.buildbox.dev/flows/checkout
Flows
Checkout
Onboarding
Settings
Billing
Reports
Last crawl
Friction map
Checkout · happy path
12 nodes · 3 frictions · last crawl 4h ago
3 issues
Land
→
Cart
→
Add payment
→
Confirm
62% drop
Postal-code regex rejects valid Canadian formats. Fix proposed: relaxed pattern + inline validation. PR #482
Shipped
Cart abandonment fix merged 2h ago. Drop-off down 18% in synthetic re-test. PR #481
Connects with
How it works

Crawl your product, test every flow with synthetic users, and ship the fix as a PR.

crawling /checkout · 12 nodes
01 / Crawl

Map every user flow as a new user

Given a URL and test login, our agent clicks through every screen and builds a map of how your product actually works

P1P2P3failed at /payment62%completed in 3 stepspassfailed at /payment58%
02 / Test

Find where users get stuck or confused

A swarm of testing agents runs each flow as custom personas calibrated against your live analytics data

PR #482 · postal.tsopen−/^[A-Z]\d[A-Z] \d[A-Z]\d$/+/^[A-Z]\d[A-Z]\s?\d[A-Z]\d$/i+// allow lowercase + space+4−2· synthetic re-test passes
03 / Fix

Ship UX changes as instant PRs

For each high-friction flow, Buildbox generates 2–3 variants, tests them synthetically, and ships the winner

cursorclaudePRODUCT MAP · v.247
04 / Map

A product brain for your coding agents

Every crawl, finding, and fix updates your product brain, giving your coding agents more context

Some of our findings

Real findings for real fixes.

Every Buildbox crawl produces a ranked list of UX bugs that cite the exact funnel step, the persona that hit it, and a proposed code change.

POSTAL CODEM5V 3A8!Invalid postal codevalid CA format
CHECKOUT · friction
"Postal-code regex silently rejects valid Canadian formats."
62% drop-off · PR #482 · open
app · /dashboard"is it broken?"P2 · Day 1
ONBOARDING · shipped
"Empty-state on Day 1 dashboard implies the product is broken, not new."
−24% Day-1 churn · PR #479 · merged
7 days left in trialUpgrade →app.com/billing← dead link404page not found
SETTINGS · friction
"Two paths to billing, one routes to a 404 from the trial banner."
11% bounce · PR #486 · open
The artifact

A living map of how your product actually works.

Every flow, job to be done, and friction point updates on every crawl and exports as portable context that Cursor and Claude Code consume directly.

Landing pageSign upBrowse demoCreate workspaceTry templateFirst page createdShare with teamIntegrate SlackActivated
WorkingFrictionMapped
Exports as a .zip for Cursor + Claude Code
Join the waitlist

Find the friction. Ship the fix.

Join our waitlist to get product updates and early access.