Make the brief testable.
Paste the requirements. Review and edit the proposed checks before anything runs.
Client requirement
“The homepage must fit a mobile screen without horizontal scrolling.”
Website delivery, with receipts
Send the site.
Show the proof.
Turn a client brief into approved checks, real browser evidence and a delivery report that speaks for your work.
Review the sample checks. Run a real browser audit. Download the report.
From the first brief to the final file
Close the loop.
Not another tab.
One clear thread connects what was requested, what was checked and what actually happened.
Let the browser verify it.
Approved assertions run in Playwright. Screenshots and observed results record what the site did.
Approved check
Mobile layout 390px
Compare page width with viewport widthDeliver the whole story.
Open a readable report with each result, its original requirement and its evidence in one place.
Website delivery reportRequirement · Observation · Evidence
A pass should mean something
The difference
is in the evidence.
A changed headline. Missing image text. A page wider than a phone. See what happens when an intentionally broken sample meets the same checks.
Some things need a person.
“Feels trustworthy” stays unverified until a human reviews it. It never becomes an automatic pass.
Forma StudioSynthetic sample website
Acceptance preview5 Passed
0 Failed
1 Manual review
- The agreed homepage headlineExact visible headingPassed
- A visible “Start a project” linkLink label onlyPassed
- Alternative text on content imagesPresence, not description qualityPassed
- A layout that fits a mobile screen390px viewportPassed
- The words “Independent by design.”Exact visible textPassed
- A welcoming, trustworthy feelingA person needs to decideReview
This preview illustrates saved sample outcomes. Open the workspace to approve checks and run a real browser audit.
Built in the open
Honest software.
Including the small print.
Briefstamp is a working MVP. The browser audit is real. Research results and infrastructure limits are visible, too.
Working
Real checks. Real reports.
Playwright execution, screenshots, result reports and GitHub Actions audits work today. Audit this real public landing page or compare the healthy and broken synthetic samples. Browser checks are read only, with page scripts disabled.
Open model, reviewed by you
AI that shows its work.
Open the sample and choose Generate with Gemma to request a fresh plan from Google's open-weight model. You review its checks before the browser runs. Saved Tinker experiments separately measure a token-cost and accuracy tradeoff.
How live Gemma worksHosted trial verified
Persistence, tested honestly.
The hosted demo saves audit results to a dedicated Tiger Data trial with verified TLS and session-scoped keyword retrieval. Access expires October 20. Sessions last up to 30 minutes; screenshots remain temporary files.
Read the evidenceBefore the handoff
Good questions.
Clear answers.
A little context before you open the workspace.
Can I test my client’s website?
In the public workspace, choose “Audit this live site” to check Briefstamp’s real landing page, which its owner has authorized, or use the synthetic samples. Private setup supports other authorized public websites. Scripts are disabled, so JavaScript-only flows are outside this audit. Only audit a site you own or have permission to test.
Will it submit forms or change my site?
No. Approved checks inspect visible text, headings, links, image alternative text and mobile overflow. Form submissions, purchases and destructive browser actions are outside the supported checks.
Does a passed report guarantee everything works?
A pass means the specific approved assertion ran and matched its expected result. It does not certify an entire website. Unsupported, blocked and subjective requirements remain clearly separate from passed checks.
Can I keep the delivery report?
Yes. Download the report with screenshot evidence from the workspace. Public demo sessions are temporary, so save your report before leaving.
What does it cost to try?
The public sample demo is free and requires no payment details. Commercial pricing has not launched. The current project uses confirmed free resources and a bounded research pilot.
Optional: public evidence agent
The main sample demo works without this step. Approve a sample audit, then consent to Gemma consulting Tiger history and SerpApi search. Of four retained public attempts, one completed, two returned Google HTTP 500, and one had a search timeout.
Shared allowance: 100 runs total, six/hour and one/session, ending October 20, 2026 at 00:00 UTC. Failed reservations stay spent. Open the optional evidence agent.
Make the next handoff a clear one
Good work deserves
a better handoff.
A live website or a safe sample. A real browser. Your approval.