// QA that runs itself
Stop clicking through
your app before every release.
Describe a flow once. Traceback runs it on every deploy, catches what breaks, and proposes a fix when something breaks.
436 developers on the waitlist · Private beta · March 2025
“Make sure a new user can sign up and reach the dashboard.”
Button renders as <span> — check conditional render path.
Writing code stopped
being the hard part.
Copilot, Cursor, Claude Code — engineers using AI tools ship significantly more code than they did two years ago. The bottleneck shifted. Now the hard part is verifying that code actually works.
Describe it once.
Forget it forever.
Write what should work.
One sentence. No selectors, no framework to install, no scripts to write. Plain English is the entire test definition.
“Make sure a new user can sign up and reach the dashboard.”
A real browser tests it.
Chromium opens. The agent navigates, clicks, fills forms exactly like a user. Under 90 seconds per run.
Get the fix, not the error.
Not “element not found.” A plain-English description of what broke, why, and what to change. Push to GitHub or Linear in one click.
Button renders as <span>. Check conditional render path.
Already in your workflow.
Runs on every PR against your preview deploy. Results post as a status check. Merge is blocked if tests fail.
Push failure reports directly to Linear as tickets in one click. Pre-populated with context from the run.
Failure alerts fire immediately with what broke. Use @traceback in any channel to trigger runs naturally.
Sync run results and failure reports to your team's Notion workspace automatically.
Give your Claude Code agent a testing layer. It runs tests, reads reports, and fixes bugs autonomously.
Five tools — create_test, list_tests, run_test, get_report, debug_failure — for any MCP-compatible agent.
Two modes. Zero test code.
Autonomous Mode
Write a goal. We figure out the rest.
A browser agent navigates your app visually. No selectors, no scripts, no SDK. It finds what a real user would find: broken flows, missing elements, logic failures.
Deterministic Mode
Exact steps. Self-healing selectors.
Write each step in plain English. Traceback generates the Playwright. When your UI changes and a selector breaks, a vision model finds the element, repairs it, and continues. No false failures. No manual fixes.
The final output is the fix.
Not just pass/fail. A full breakdown pointing at the exact cause in your code.
The “Verify Email” button is not interactable on the desktop viewport. It renders as a <span> instead of a <button>, preventing click events from firing. Likely caused by a conditional render path in ConfirmEmail.tsx when the verification token is absent from state.
“I was spending 20 minutes manually testing checkout every time we shipped. Offloading that to an agent that just pings Slack when it fails has given me my sanity back.”
“Our old E2E tests were so brittle we eventually just stopped running them. The fact that Traceback can survive basic UI changes and fix its own selectors is exactly what we needed.”
“Getting a vague 'timeout' error from CI used to ruin my afternoon. Traceback actually points out the specific component that broke. It cuts my debugging time way down.”
Built for teams shipping fast.
No QA team. No problem.
Traceback becomes your QA function. Describe the flows that matter and they run on every deploy. You stop being the last line of defense.
Never break main again.
Traceback runs on every PR against your preview deployment. Results post as a status check. If checkout breaks, the merge is blocked.
Know before your users do.
Smoke tests run against production on a schedule. When a test fails, a Slack alert fires with what broke and a link to the full report.
AI agents that test their own work.
The agent calls Traceback's MCP server, reads the failure report, applies the fix before merging. No human in the loop.
Signup and checkout work. Every time.
Autonomous mode navigates these flows end-to-end with a real browser. Catches broken email verification, payment form errors, redirect loops.
Refactor confidently. Tests adapt.
Self-healing selectors adapt to UI changes automatically. You see what changed without a sea of red failures.
Start free. Test as you ship.
One credit = one agent action (click, fill, navigate). Overages at $0.05 / credit.
| Plan | Price | Credits / mo | Seats |
|---|---|---|---|
| Free | $0 | 100 | 1 |
| Starter | $29 / seat | 600 | max 2 |
| Promost popular | $99 / seat | 2,000 | max 3 |
| Team | $199 / seat | 4,000 | unlimited |
| Enterprise | Custom | Custom | unlimited |
One test run uses 8 to 25 credits. Most teams run hundreds of tests a month on Pro without thinking about cost.
Your next release
ships clean.
Or Traceback tells you exactly why it didn't.
Free to start · No credit card required · Beta now open