We build it.
You own it outright.

Custom software, cloud infrastructure, and AI systems — delivered to your accounts, documented, and portable from day one. We can hand it off or stick around to run it.

About

Serious engineering. No lock-in.

Limestone Labs is a boutique technical consultancy. We work directly with founders and technical leaders — no agency layers, no project managers between you and the engineer writing the code.

Every deliverable is yours: source code in your repository, infrastructure in your cloud accounts, credentials you control. When a project wraps, you can hand it to an internal team, a different vendor, or anyone else — nothing is trapped with us.

Delivery model Your accounts, your repo
Source code Yours from commit one
After delivery Hand off or stay on — your call
Services

What we build

01

Custom Software

Web applications and internal tools built to specification. No page builders, no vendor CMS, no framework lock-in. Source code delivered to your repository with documentation you can actually hand to another developer.

02

Cloud Infrastructure

Infrastructure as code deployed to your cloud accounts from day one. Automated deployments, identity and access management, architecture documentation. You receive every key. Nothing lives in a vendor-managed black box.

03

AI Integration

Server-side AI features and workflow automation built to your operational requirements — model selection, prompt configuration, data handling. Runs on your infrastructure with your API keys. Switch models or providers without rewriting.

04

AI Agents

Autonomous agents that reason and act across your existing tooling. We design the orchestration layer — task routing, memory, tool definitions, guardrails — and deploy it to your accounts. The logic and configuration are yours to inspect and modify.

How It Works

Portable by design

Everything we produce is structured to leave with you — not to keep you coming back.

  1. 01

    Scope & agree

    We scope the project in writing — features, deliverables, and a fixed price. No hourly surprises. You know exactly what you're getting before work starts.

  2. 02

    Build in your accounts

    Code goes into your repository on the first commit. Infrastructure deploys to your cloud account from the first run. You have full visibility at every stage — nothing is staged in a Limestone Labs environment first.

  3. 03

    Deliver with documentation

    Projects close with architecture documentation, deployment runbooks, and a handoff session. Any competent developer can pick up the work. No tribal knowledge required.

  4. 04

    Optional: stay on

    After delivery, you can take it fully in-house, pass it to another team, or keep us on as a managed service. All three options are viable — and you can switch between them.

Managed Service

We can run it too — if you want us to.

For teams that would rather focus on their product than their infrastructure, we offer an optional ongoing arrangement. Monitoring, updates, incident response, and minor feature work — handled without you having to think about it.

This is not a lock-in play. Because everything was built to be portable, you can switch to in-house or a different provider at any time. We're running code you already own.

Infrastructure Monitoring, alerting, and patch cadence on your cloud resources
Application Dependency updates, security patches, and runtime version bumps
Incidents Triage and resolution with a documented post-mortem
Exit Cancel any time — code and access remain fully yours
From clients

What people say

"Another vendor quoted us $40k and three months. Limestone Labs was a fraction of the cost and wrapped it up in two weeks. Same outcome — dramatically different experience."

R. Smith Owner, multi-location retail

"They acted as a technical liaison between our investment team and the researchers behind a new product. They worked directly with the inventor to surface what we'd actually need to scale — that kind of translation is rare and genuinely valuable."

D. Jones Partner, venture capital

"They move fast and keep every stakeholder in the loop. I never had to chase an update or wonder what was happening. That alone made the engagement worth it."

S. Chen Founder

Work with us.

Tell us what you're building. We scope every engagement individually and respond within one business day.

Project Inquiry

A few details help us respond with useful next steps instead of a generic sales reply.