Jet Browser Verifier runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 12 Oct 2026.
Verify an isolated WPE WebKit runtime with native-input, DOM, PNG, and cleanup evidence.
What the code does
We read the source, 5 d ago · rules 995398eba69f
Things with no honest explanation: a promise that contradicts the code, code that runs at install time while hiding what it does, data leaving the machine.
exec runuser -u browser -- /usr/local/bin/masaka-wpe-spike
this.driverURL=driverURL;this.captureURL=captureURL;this.documentStateDuringNavigation=false;this.child=child||spawn(process.env.JET_WPE_BINARY||'/usr/local/bin/jet-wpe',[],{stdio:['pipe','pipe','pipe'],env:{PATH:process.env.PATH,HOME:process.env.HOME,WPE_WEBDRIVER_URL:driv…
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
if(req.headers.origin||!/^127\.0\.0\.1:\d+$/.test(req.headers.host||'')||!/^\/session(?:\/[a-zA-Z0-9-]+(?:\/(?:timeouts|url|actions|screenshot|title|cookie|execute\/sync|element\/active|element\/[a-zA-Z0-9-]+\/value))?)?$/.test(req.url)||!['GET','POST','DELETE'].includes(req.met…
assert subprocess.check_output(['runuser', '-u', 'worker', '--', 'cat', str(download)]) == content.encode()
const asyncLocal=(page,script,args)=>page.evaluate(({script,args})=>new Promise(resolve=>new Function(script)(...args,resolve)),{script,args});
child=spawn(process.env.CLOUDFLARED_BINARY||'/usr/local/bin/cloudflared',['tunnel','--no-autoupdate','--url','http://127.0.0.1:8787'],{stdio:['ignore','ignore','pipe']});
USER root
"value": "type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock"
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found things in this code
Code changes quietly between releases, and nobody reads the diff of a dependency. We do, on every release — watch Jet Browser Verifier and you get told the day something new turns up.
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Jet Browser Verifier — questions
Answers built from our own checks of this server.