AI-Native ERP · Platform

The first step toward
AI operations.

One stack. One schema. AI as a first-class primitive — and a named operator on the hook.

All your data that was previously monopolized by your legacy ERP can be liberated and ingested into Castle with our elite engineers

In 2026, the only thing special about NetSuite's Technology is their unique ability to lie and deceive their customers with Legal Finessing

Anti-Celigo · Native Integrations

Direct connections, no middleware.

Search any integration, click to add. Native Shopify connector live; Amazon and Extensiv next. Anything we don't yet support — we ship it.

Castle integrations dashboard — visual hub-and-spoke with search

AI-Native · Model Context Protocol

Your data, queryable by any AI client.

Castle exposes a Model Context Protocol server. Claude Desktop, Cursor, or any MCP-compatible client can query your live ERP data with one JSON config snippet.

Castle MCP server connection — secret key + JSON config for Claude / Cursor

Custom Components on Demand

Add Fields to Your Pages

Castle lets admins customize any record with custom fields, relate data across entities, and build workflows — all without writing code or hiring IT consultants.

Custom Fields on Any Record

Add text, dropdowns, dates, files, and more to any entity — customers, orders, products, you name it.

Relate Data Across Entities

Link records together the way your business actually works. No rigid database schemas.

Drag-and-Drop Interface

Intuitive UI that requires zero training. If you can use a spreadsheet, you can use Castle.

No IT Consultants Needed

Admins customize the system directly. No $300/hr consultants, no six-month implementations.

Capture All Sales

Throw every module in the trash. Just build on top of your custom data organization.

Order-to-Cash

Quotes, sales orders, fulfillment, invoices, and payments — the complete revenue cycle in one flow.

Bank Reconciliation

Automatically match transactions, flag discrepancies, and close your books faster.

Customer Management

Full customer profiles with order history, communications, credit terms, and custom fields.

Financial Reporting

P&L statements, balance sheets, general ledger reports — all audit-ready out of the box.

Inventory & Fulfillment

Multi-warehouse tracking, automated reorder points, and real-time fulfillment status from pick to ship to delivery.

Product Catalog (PIM)

Manage your products, variants, pricing tiers, and vendor relationships in one place.

Custom Integrations

Connect any third party with our in-house tooling

Shopify

E-commerce platform

Castle

Connecting Shopify...

🇺🇸

24/7 Support

Named-operator support is native to Castle. No support tiers, no ticket limits, no outsourced call centers. We receive awareness of your problems immediately.

Free Named-Operator Support

Included with every plan

American-Based

No outsourced call centers

Video Call Access

For complex issues and walkthroughs

Live Chat

Built right into the platform

When ERP isn't enough

Contract Marketplace.

Castle ensures enterprise data security and validity. Submit a problem, our engineers estimate, the King narrows down, you meet 1-3 finalists, and they submit binding agreements with strict completion metrics. $500 per engineer proposal. Pay the contract only upon completion.

Explore the marketplace

What goes to the Contract Marketplace?

Custom integrations with third-party systems
Data migration from legacy platforms
Custom reporting and analytics dashboards
Workflow automation beyond standard ERP
API development and system architecture

Castle remains the single source of truth. Knights build on top of it — never around it.

Knowledge Library

Castle audits and catalogs every change, transaction, ticket, into a searchable knowledge library for your business. Executive users will query historical data, past problems, and budget history using your customized context-driven AI agents. Your agent can serve as a system analyst who monitored your implementation start-to-finish.

Semantic search across all company data

Entity Extraction to Enable Q&A

Historical trend analysis and pattern detection

Budget history and financial decision context

Get started