LUMBRIDGEApply — S01

Season 01 · Los Angeles / San Francisco · Applications open

Your idea isn't the moat. Execution is.

In the vibe-coding era, everyone has the idea — it was never what made a company. We back three things instead: an AI co-founder — a Lumbridge agent with its own Git, compute, and tokens — that makes execution a commodity, the velocity to close the build-learn loop faster than anyone, and founders who'll pivot to Sunday. Twelve months later: a Series A, or set free under MIT.

The factory builds itself. Now it builds with you.


The thesis

The idea was never the moat.

In the vibe-coding era, everyone has the idea, the demo, the landing page by Friday. That was never what made a company. We select — and build — for three things instead.

Pipeline

A factory that makes execution a commodity.

The Lumbridge software factory turns “can we build it” into a solved problem. What's left is the only question worth asking: what should we build next.

Velocity

How fast the loop turns.

Ship, learn, decide, ship again. We back the teams that close that loop faster than anyone else in the batch — because over a season, speed compounds into a category.

The Founders

Willing to pivot to Sunday.

We read the team, not the pitch. Taste, grit, and the ego-free nerve to throw out Friday's plan and ship a new one by Sunday. Ideas are disposable. Founders who pivot without flinching are not.


What you get

Three ways we put execution on your side.

So we don't just wire money and wish you luck. We hand you engineers — human and agent — and stay in the build until the company stands on its own.

Capital + LLC

We fund the season.

Money in the bank and your LLC stood up on day one — plus a founders package so you start as a real company, not a weekend project.

AI Co-Founder

An agent that executes.

A Lumbridge agent deployed as your technical co-founder — with its own Git, database, compute, and tokens. It runs the agentic SDLC around the clock, with Karti steering.

Fractional CTO

A CTO on your terms.

Architecture, technical hiring, the hard calls. A CTO's judgment on your cap table's terms — not a CTO's slice of equity.


The co-founder

Every company gets an agent co-founder.

Not a tool you operate — a co-founder that executes. We deploy a Lumbridge agent into your company and provision it a full AI-native workspace. It plans, writes, reviews, and ships around the clock. You point; it builds.

Git

Its own repos. Every change lands as a reviewed pull request.

Database

Provisioned and migrated — real state the agent owns and evolves.

Compute

On our neo-cloud. The agent never waits in a GPU queue.

Tokens

Frontier models, metered so thinking is never the bottleneck.

PlanBreak the idea into shippable work
BuildAgents write the code, in parallel
ReviewAdversarial checks before it merges
ShipDeploy, verify, then rebuild the factory

The forge floor

A desk in the room where it's built.

Three to five desks in Los Angeles and San Francisco. Show up and build next to the people building the factory.

Your desk

A dedicated seat on the forge floor — LA or SF. Not a hot desk. Yours for the season.

Gigabit + Starlink

Symmetric gigabit fiber with Starlink on automatic failover. The uplink never blinks.

Neo-cloud, on-prem

A Dell workstation wired into our own compute — frontier Blackwell-class silicon, in the building. No queue, no cold GPUs.

The fleet, on tap

The Lumbridge agent fleet runs beside you on the same floor — spin up engineering capacity the moment you need it.


The team

Small, senior, and ten minutes away.

Lumbridge is Karti and two stealth engineers — battle-tested, hardened, AI-native. No account managers, no junior bench. You're in our Slack from day one, and we hold the line on a real SLA.

3Engineers behind the whole firm — and the fleet they command
10minSlack SLA — a senior engineer answers, not a bot
24/7Agent fleet building beside them, around the clock

The season

One batch a year. Twelve months in the forge.

Raw idea to tempered company, followed the whole way. Every season ends one of two honest ways.

Month 0

Ore

Selection. One batch enters the forge. LLC, capital, and founders package land on day one.

Months 0–6

Forge

Build. The factory runs on your product while you find the true shape of the company.

Months 6–10

Temper

Traction. Users, revenue, and the story a Series A can actually believe.

Months 10–12

Ship

Raise or release. Close the Series A — or set the work free under MIT, or a license you choose.


The deal

You keep the majority. We earn the rest.

You bring the idea and the cap table. We bring an agent co-founder, the factory behind it, and the hours to push it to the moon. For that we take a real co-founder's stake — never control.

51–75%Founders — always the majority
25–49%Lumbridge

Where you land in the band depends on stage, capital in, and how much we build. We only win when you raise or exit — no fee, no salary, no board seat you didn't offer.

A co-founder's stake, because that's what the agent isYou keep control of your companyAligned to the outcome, not the hours

Season 01

Applications are open.

Tell us what you're building — but know we don't read for the idea. We read for how fast you move and how willing you are to be wrong by Sunday. If it's a fit, we'll talk within the week.

ApplyWe engage in a weekYour agent is deployedThe loop starts
What you want from us

We read every application ourselves. If it's a fit, you'll hear from an engineer within the week.