ENTERPRISE RESOURCE PLANNING · EST. 2026

Command your business empire.

Single source of truth data management to capture and connect your mission-critical business operations. Built AI-native. Self-customizable interfaces for every employee.

Just your data.Forget nothing.

One platform.
Two entry points.

Run your finances on the ERP, or query the audit-ready knowledge library that comes built in. One stack. One schema. AI as a first-class primitive.

01 · ERP

Modern ERP

Manage every integration from one console. We're building a new kind of software — Dynamic Software Interfaces that give each role its own tailored interface, while the underlying data keeps the consistency, integrity, and privacy expected from a legacy ERP.

Native integrations across your stack
Single integration management console
Custom fields on any record
Direct messaging across the team
Responsive US-based customer service

Explore the ERP

02 · LIBRARY

Embedded Library

A RAG-powered knowledge layer that indexes every transaction, record, and internal document — with saved searches, scheduled reports, and built-in analytics on any slice. Exposed as an MCP server your AI agents can query directly.

Every invoice, ticket, and doc embedded
Saved searches and scheduled reports
Built-in analytics on any data slice
Semantic search over your company data
MCP server endpoint for agents

Explore the Library

Intuitive by default.
Auditable by design.

An interface anyone can use, a library that helps you customize without engineers, and a memory that never overwrites itself.

Castle operates around the workflows your team already runs — not the database schema underneath. Spotlight search across every record, inline edits, keyboard shortcuts, and live updates make routine work direct and immediate.

Custom fields on any customer, a new dashboard, a tweaked invoice template — the embedded knowledge library is pre-loaded with your data, your fixes, and our docs. Most one-off customizations resolve through a question, not a ticket.

Castle never silently overwrites. Every record edit, transaction, and customization is captured with who, when, and why — so a bad import is reversible, a dispute is settled with receipts, and the auditor walks out with a clean trail.

When something genuinely breaks — or when you would rather a Castle operator make the change for you — a real person joins your session within the hour, 24/7. No tickets, no tier-1 maze, no chatbot.

The first step toward AI operations.

Castle consolidates and standardizes your operations into a single source of truth. Once your data is accurate and organized, AI becomes your engineering and optimization engine — and a named operator stays on the hook for the outcome.

AI-native knowledge

Every ticket, transaction, and decision is cataloged in a searchable RAG library — unique to your company.

Data integrity first

Strict audit trails. Every change is logged. No silent overwrites. Your books stay trustworthy.

Flagship dashboards

Real-time financial dashboards and mobile-first notifications for the metrics that actually matter.

Live in-browser support

Chat and video support built into the app. No tickets lost in email threads.

Order-to-cash, automated

Bank reconciliation, receivables tracking, and invoice matching without the spreadsheet gymnastics.

Own your data

Escape ERPs that shackle your data. Export, extend, and automate on top of a modern schema.