About
We build one thing: custody software for shops that hold Teslas.
Moon Sherpa Labs is the company. GuestLot is the product, and the name on the Tesla third-party app screen your customers approve. We are in Austin, Texas, and we make software for shops that have been holding other people’s cars for years without a single honest record of what happened while they did.
In one paragraph
What this company is.
Moon Sherpa Labs is a software company based in Austin, Texas. Its product, GuestLot, is time-boxed vehicle custody software for automotive shops that take temporary possession of customer Teslas: window tint, paint protection film, vinyl wrap, collision and body repair, and independent EV repair. A shop checks a vehicle in at the counter, the owner authorizes GuestLot as a Tesla third-party app for a window that ends at pickup, the shop receives lot activity as counts and timestamps, and at hand-back the shop revokes access and the owner receives a tokenized report.
GuestLot ships as three named surfaces: PorterKey, the staff counter app; AccessReceipt, the owner-facing report generated at hand-back; and BenchNote, the VIN decode and NHTSA recall intake module included with the Pro plan. Pricing is flat per location — $179 per month for Standard, $349 per month for Pro — and never per connected vehicle.
Why this exists
The gap was hiding in plain sight.
Go stand in a tint shop on a Saturday. There are three Teslas on the lot, two more in the bay, and the keys situation is: one owner left an NFC card in a drawer, one gave a phone key to a tech who has since gone to lunch, and one just left the car unlocked because that is how Teslas work now. Nobody is doing anything wrong. There is simply no record — of who drove it, when it left, or whether anything happened between drop-off and pickup.
That is fine right up until it is not. A car comes back with forty extra miles. A Supercharger session shows up on the owner’s statement. Someone finds a scuff and two people remember Tuesday differently. The shop is the bailee, so the shop is the one who has to explain, and it is explaining from memory.
Meanwhile the shop already pays for software. It has a CRM that quotes film and an invoicing tool and probably a review-request robot. None of them are responsible for the car. We built the missing piece and nothing else: a key with a clock on it, a record nobody can edit, and a receipt the owner opens from a text.
How we build
Honesty is the product, not the marketing.
These read like values statements. They are actually engineering rules, and they have each cost us a feature somebody wanted.
- Say the limit out loud. Tesla has no remote Service Mode command and an NFC key card cannot be wiped. That belongs on the page before the sale, not in a support ticket after it.
- Never print a number we did not receive. Missing readings say . A zero that means “we do not know” is a lie in a nice font.
- A closed record stays closed. Nobody edits a snapshot after hand-back — not the shop, not our support team, not us.
- The owner is a party to this, not a data source. They get a receipt, they can revoke at any time, and nothing continues after pickup.
- Ship the small honest thing. Awareness software, not a security SLA — and we would rather lose a deal than fix that sentence.
Not on the roadmap
What we do not build.
A short list we intend to keep short. Every item is a market we could enter and a reason we would stop being useful.
- Another owner telematics app. That market has good products in it already and we are not the owner.
- A quoting or scheduling CRM. Keep Urable or Tint Wiz. We sit next to your CRM on purpose.
- Security theater. No live map, no staff tracking, no dashboard that implies control we do not have.
- A data business. Owner data belongs to the visit it came from. We do not sell it or broker it.
- Per-vehicle pricing. It punishes the shops doing the most work — see pricing.
Keep reading
Contact
hello@guestlot.com. Tell us your shop, your city, and your volume.
How it works
The five steps, start to receipt.
Security and limits
The honesty thesis, applied line by line.
Pricing
$179 or $349 per location per month. Flat.
For Tesla owners
What we tell the person whose car it actually is.
Guides
Longer writing on key cards, Fleet API, and shop liability.
Built in Austin, for shops that already hold the cars.
If your shop sees Teslas every week, the trial is fourteen days and does not ask for a card.