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Case Study

Keysolved

The vehicle key reference, built for working locksmiths

Built for Alex Welsh
21 days
Co-founded, revenue share
Next.js 16
React 19
TypeScript
PostgreSQL
Drizzle ORM
Clerk
Stripe
Anthropic Claude
Keysolved screenshot

21 days

Kickoff call to live product

7+

Countries with paying subscribers

$19/mo

Standard subscription

"For years I have wanted to do this and now it’s a reality so thank you. I’m really looking forward to promoting it and you have my word that I’ll be making this my main priority."
A

Alex Welsh

Co-founder, Keysolved · Founder, The Locksmith Mentor

01THE PROBLEM

You get the call. All keys lost.

You check your memory, the scribbles in your notebook, then a manufacturer PDF that’s three firmware versions out of date. The Facebook groups have an answer from 2019. The forum thread you half-remember is locked. The tool manufacturer says “supported” but won’t tell you the firmware version or the adapter you need. And this is all before you’ve quoted the job or even left site.

Auto locksmiths work from vans. They turn up to stranded customers with 20 minutes to fix it. The information they need — transponder family, programming method, tool compatibility, OBD port location, security code workflow — is scattered across the open web, and one wrong assumption kills the job. The field experience is locked inside individual heads.

02THE SOLUTION

Keysolved is the single reference, on a phone, on the job. Search by make / model / year, or paste in a UK reg and DVLA returns the vehicle in under a second. The vehicle page tells you the transponder chip, the programming method (OBD / EEPROM / on-board / bench), the skill level, the security code workflow, which Autel / Xhorse / OBDSTAR / Lonsdor tools actually work, the firmware quirks that don’t show up in tool docs, the OBD port location with an illustration, and the field tips from working locksmiths. Mobile-first. PWA. Works offline because vans don’t always have signal.

03KEY FEATURES

UK Reg Lookup via DVLA

Type the plate, get the vehicle. DVLA MOT History API behind the scenes via OAuth2. Registrations and IPs are HMAC-hashed before persisting — plain SHA-256 isn’t enough because the UK plate space is finite and brute-forceable. Free for subscribers, instant, private.

Vehicle-by-Vehicle Key Spec

Every catalogued vehicle gets a structured page: transponder family, blade profile, Lishi pick, programming methods, skill level, security code source, OEM part numbers, cloning support. Not a forum post. Not a screenshot. Editorially vetted before it goes live.

Tool Compatibility Matrix

Tested coverage for Autel, Xhorse, OBDSTAR and Lonsdor with the firmware caveats and adapter requirements called out. You know what works before you start the job.

Community Field Tips

The quirks you’d otherwise find in a 2019 Facebook thread — gotchas, “this worked for me” notes, warnings — from working locksmiths, voted and verified before they’re surfaced.

AI OBD Port Illustrations + Weekly Newsletter

OBD port locations rendered as schematics by OpenAI image models, stored on Vercel Blob, admin-reviewed before publication. A weekly newsletter drafted by Claude from the week’s catalogue updates, curated by hand, pushed via Loops.

MCP Server for Locksmith Agents

Keysolved exposes a Model Context Protocol endpoint at /api/mcp, authenticated via Clerk OAuth + JWT (RFC 9728), so subscribers can plug Keysolved into Claude, Cursor, or their own tooling and query vehicle data directly from an LLM. The first locksmith-facing MCP server I’m aware of.

04GALLERY
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05THE RESULTS

Paying subscribers across 7+ countries — UK, US, France, Spain, Denmark, Mexico, Cameroon — in the weeks after launch via Alex’s locksmith audience. Two tiers active: $19/mo standard and a permanently-locked $9/mo founding cohort capped at 100. Weekly Claude-drafted newsletter live. The catalogue is growing daily — new vehicle requests from real subscribers go straight into the queue. Same product the locksmith trade had been waiting years for, shipped in three weeks from a kickoff call to a live, billing product.

06THE BUILD STORY

Alex Welsh runs The Locksmith Mentor — a YouTube channel and education business for auto locksmiths. He had an idea he’d been carrying for years: every locksmith he taught was working from the same scattered, unreliable sources, and nobody had built the reference they actually needed. He had the audience and the domain knowledge. He didn’t have the build.

We had a call on the 8th of April. The next day I sent over a plain-English product spec, a Heads of Terms, and started on the frontend prototype before the ink was dry.

We argued the name for 48 hours. I’d called the prototype “KeyBase”. Alex pitched “Keyamigo”. Then on the same morning we both independently arrived at Keysolved. He emailed: “You already got it, could be a sign.” It was.

Three weeks later we were live. Alex announced it to his email list, signups started landing the same day, and the first honest customer feedback arrived a day after that — exactly the loop we wanted. The product isn’t the moment of launch. It’s the year that follows it. We’re a few months in and the catalogue grows every week.

07BUILD TIMELINE
Week 1

Frontend on Mocks

Next.js 16 + App Router, mobile-first UI, MSW-mocked API, full UX before any backend; brand and naming locked with Alex

Week 2

Real Backend

Clerk auth, Neon + Drizzle, Stripe billing with founding tier, webhook idempotency, vehicle catalogue seed

Week 3

Launch

DVLA integration, PWA offline, MCP server with JWT, AI OBD illustrations, Loops integration, launch via Alex’s audience

Ongoing

Catalogue + Community

Weekly Claude-drafted newsletter, subscriber-requested vehicle additions, community tips, MCP coverage

08INTEGRATIONS
Clerk
Neon
Stripe
Upstash
Loops
Sentry
DVLA
Anthropic
Vercel Blob
MCP
09STAY UPDATED

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