Can AI actually reproduce bugs from vague customer reports?

Yes. FixFirstly's reproduction agent reads the customer's own words, uses a map of your app's pages and UI (built once during onboarding), and navigates like a real user would. When the report is too vague to reproduce, it tells you exactly what extra information it needs — so you know whether to email the customer back or move on.

How does it compare to Jam.dev?

Jam is a browser extension your users install to capture repro steps at the moment of the bug. FixFirstly is the opposite — it works after the fact. You paste the bug report (or sync it from Gmail), and the agent tries to reproduce it on demand. Use Jam when you control what your users install. Use FixFirstly when you only have the text of a support email.

What happens when the agent can't reproduce the bug?

The agent returns an 'inconclusive' verdict and explains exactly what it tried, what it observed, and what context it was missing. You get the full trace plus a session replay — no lost work, just a clear answer about what to investigate next.

Do I need to give it test credentials?

Yes — you provide a test account email and password during setup. Credentials are encrypted at rest and only used inside a sandboxed cloud browser. You can rotate or revoke them any time.

What browsers does the agent use?

Google Chrome running in a cloud sandbox (via Browserbase). Every session produces a shareable replay link you can send to a teammate or attach to a bug ticket.

Can I trust it with my production app?

The agent has built-in guardrails: it refuses actions that match logout, delete-account, cancel-subscription, or billing patterns. It only navigates within your app's host. Most founders use it against a staging environment or a dedicated test account on production.

Early access — free for founding members

Auto-reproduce customer bugs before you start fixing

Stop asking “can you send me more details?” Give FixFirstly the bug report and an AI agent opens your app, follows the customer's steps, and tells you exactly what's broken — with a session replay you can share.

Free for early adopters. No credit card required.

app.fixfirstly.com / reproduce

Reproducing: Invite member fails silently

00:24

Logged in as test user

Navigated to /settings/team

Clicked “Invite member” button

Typed email, clicked Send

Submit fired — no network request observed

ReproducedVerified bug · 24s

How it works

From a one-line bug report to a verified reproduction

Customer submits a bug report

Via Gmail, CSV upload, the public API, or pasted straight into FixFirstly. The agent reads the raw customer language — no templating required.

AI classifies and clusters it

The message is classified (bug, feature, support) and grouped with semantically similar reports. You see the full cluster and how many users are affected.

You click Reproduce

The agent opens a real Chrome browser in the cloud, logs in with your test account, and navigates toward the feature the customer described.

You get a verdict plus repro steps

Reproduced, not reproduced, or inconclusive — with the exact steps taken, observations at each step, and a session replay link you can share with anyone.

What it does

Built for solo founders, not QA teams

Reads the customer's own words

No bug-report template, no back-and-forth. The agent takes the raw email or support message and plans a test from it.

Opens a real browser, not a mock

Runs a Chrome session in the cloud. Interacts with your actual app — logs in, clicks, types, submits forms. No fragile selectors.

Finishes in under a minute

Typical reproduction runs complete in 30–90 seconds. Budget-capped at 3 minutes so it can't get stuck.

Returns minimum repro steps

Not a 400-action transcript. The agent distills what it did into the minimum sequence needed to trigger the bug.

Shareable session replay

Every run produces a replay link. Drop it in a Linear ticket, Slack, or an email back to the customer.

Built-in safety guardrails

Refuses actions matching logout, delete-account, cancel-subscription, or billing patterns. Stays within your app's host.

FAQ

Questions founders ask us

Stop guessing which bug is real.

Connect Gmail, paste a staging URL, and watch the agent reproduce a bug — as soon as we open access.

Free during early access. No credit card.