The Harness is the brake. Five Claude Code skills that make Claude refuse to ship the five mistakes that silently destroy what you built. The skills are free. This is the hosted layer.
The 5 skills are free and MIT licensed. Pro adds monthly incident rules sent to your inbox and priority support, with the hosted dashboard + integrations shipping Q3.
None of these people were careless. They were shipping with AI, at speed, with no gate between the agent and production.
"It deleted our entire production database."
A founder, July 2025, after an AI agent ran database commands during a code freeze.
The agent then misreported the test results. Recovery and trust, both gone.
"160+ hours of near-launch work, destroyed."
A developer, on an AI coding tool that auto-cleaned a worktree without committing.
Three hundred files across components, routes, and migrations. Not user error.
"My computer was left like a fresh install."
A user, after an AI agent's "cleanup" task ran wider than the repo.
Other apps, personal documents, years of professional files. Deleted.
"You don't learn the key leaked until the bill lands."
A developer, after an AI-built app shipped an API key in the browser bundle.
Thirteen hours. A five-figure bill. No alarm, no test failure, nothing.
A skill is a file Claude Code reads and acts on. Install these five and they fire automatically before risky work. They are not monitoring. Monitoring tells you after. The Harness stops it before.
Catches capture forms that silently 404 because a fetch resolves to the wrong host when a page is proxied. The leak you never see until the leads stop.
Born from five silent capture failures in one day.
Aborts a deploy when your local folder has fewer files than the live site, before it overwrites everything else and deletes it.
Born from a 5-file deploy that nuked a 67-file site. 51 pages, gone.
Refuses to call an email funnel "live" until a real test submission proves a subscriber actually lands with the right tags and sequence.
Born from a multi-site capture break that every green deploy hid.
Finds prices leaking into places they should never appear: navigation, banners, cold outreach, social bios.
Born from a rate that leaked into a cold message and broke the framework.
Stops two agents or two people from deploying to the same site and clobbering each other's work.
Born from five collision deploys to one site inside a single hour.
The repo is open source and MIT licensed. Pro is the hosted layer for people who ship often enough to want more than the local files.
Free. Forever. MIT licensed.
Everything free, plus the human + content layer.
Already own a Closer Method product? Pro is free for your first year. Check your inbox after launch.
The full hosted layer. Cancel anytime. The way to start if you want to feel it first.
Start monthlyThe full hosted layer, a year at a time. For people who ship every week and know it.
Start annualPay once, keep Pro forever. Fifty seats. The link closes itself when they are gone.
Claim a founding seat"I patched one file, deployed from a folder that held five, and overwrote a site that had sixty-seven. Fifty-one pages went to 404 in one push. The Harness is every brake I wished I'd had."
Elisabeth Hitz has closed over 1.2M dollars in B2B sales at Deel, Criteo, and Bloomberg, and now builds AI tools full time. Every skill in The Harness exists because something broke. Each one is the gate that would have caught it.
The Harness is built on the same principle as the rest of the Closer Method: the system is the moat. Speed without a brake is just a faster way to crash.
No. The five skills and three workflows are free and MIT licensed. Install them in 30 seconds and they work forever. Pro adds a monthly incident rule emailed to your inbox plus priority support. The hosted dashboard, Slack and Discord webhook, and builder community ship in Q3 and current Pro members get them free when they land.
Claude Code. The skills drop into your skills directory and Claude picks them up automatically. They ship with placeholders, so they work for any stack: your sites, your paths, your email tool.
It slows down exactly one thing: the deploy that would have hurt you. Everything else is untouched. A brake is not the opposite of speed. It is what lets you go fast safely.
No. Every existing Closer Method customer gets Pro free for the first year. You will get an email after launch with access.
Fifty seats. Pay $497 once and keep Pro for life. When the fiftieth seat sells, the link closes on its own. After that it is monthly or annual only.
Monthly and annual, anytime. Founding is a one-time purchase, so there is nothing to cancel.
Not the one explaining to customers why the data is gone. The skills are free. The hosted layer is below.