Limestone, Ashlar and Keystone stack into one system that runs your operation — with Plumb keeping every agent true and Lantern putting it all in front of leadership.
Every engagement starts with the foundation. Before any tool is built, every source flows into one continuously updated database that you own.
Indiana limestone is the stone under buildings meant to last. The Limestone Foundation is the same idea for your operation: ERP, CRM, accounting, email, field apps and the spreadsheets on individual desktops — ingested, cleaned and structured into one secure record. It takes a month or two at the start, with no visible application to show for it. It is also the most important thing we build.
Scheduled pipelines and live webhooks keep it current. No one uploads files by hand.
Built in accounts you control. The database and everything in it is yours.
Each team, role and user sees only the data they should.
Duplicates resolved, records matched, every field traceable to its source.
Your context lives in your database, not inside one AI vendor's account.
Sensitive categories are kept out by design — enforced in the architecture, not by a reminder.
Ashlar is stone cut and squared to fit one exact place in a wall. Each Ashlar tool is built for one department — and fits the rest of the structure.
Collections, scheduling, purchasing, estimating, inventory, customer service: each tool lives inside the daily work of the team that uses it. Review queues instead of inboxes. Drafted letters instead of blank pages. One-click reports instead of re-keyed spreadsheets. Because every tool shares the Limestone Foundation, the output of one becomes the input of the next.
Your team uses tools, not chat windows. The AI works behind the button.
Every consequential output waits for a person to approve it.
Pricing, terms and policies live in a governed rule book. The AI never invents them.
Phone-first views for crews, estimators and inspectors.
Every tool ships with the metric it is supposed to move.
Every tool lands in a single application — not a pile of logins.
The keystone locks every stone in the arch. Keystone coordinates agents across functions and closes the loop — so every real-world result sharpens the next decision.
Building tools is table stakes. The value compounds when they work together: an order, a variance or a late payment becomes a signal that flows across departments, gets priced against everything it touches, and lands in front of the right person with a recommendation and the math shown.
Demand, supply, scheduling, collections and service agents that read from one foundation.
Cost, contribution, cash, inventory and customer impact weighed on one screen.
A person approves every consequential action — and the outcome feeds back.
Each recommendation carries its sources and its reasoning.
A mason's plumb line checks whether a wall is true. Plumb does the same for every AI agent we deploy.
Every agent has a record: what it does, which version is live, how it scores against its test suite, what it costs to run and every action it has taken. Prompt changes are scored before they publish and can be rolled back in a click. For public-sector and regulated work, every query is logged and access is role-based.
Every agent, its owner, its expected cadence and its health in one place.
Changes are evaluated against real cases before they reach production.
Every prompt and rule change is versioned and reversible.
Append-only record of who — or what — did what, and when.
Model usage and cost per agent, visible to you.
Monitoring, checklist verification, or independent human review — by risk.
On a domed building, the lantern is the windowed cap that lets the light in. Lantern puts the whole operation on one screen.
Goals, measures, financials and exceptions — populated from live data before anyone walks into the room. Leadership sees the business daily instead of at month-end, and the meeting is spent deciding instead of reconciling.
Orders, cash, capacity and service levels as they stand today.
What changed, what is at risk and what is waiting on you.
Every objective tied to the number that proves it.
Every tile traces back to the transactions behind it.