CEL - Code Elastic Layer

The foundation enterprises build on to enter the agentic age, on their terms.

Not rented. Not locked. Yours to extend, automate, and own - forever.

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Celerp trial balance - balanced double-entry accounting
Real double-entry accounting - trial balance, P&L and balance sheet built in
Celerp role-based permission matrix
Role-based permissions with a granular per-action matrix
Celerp REST API documentation (OpenAPI 3.1)
A full REST API (OpenAPI 3.1) for automation and integration

A shift is happening.

Leadership wants a timeline for AI agents. Your integration vendor just sent a quote that made someone wince. And somewhere, a competitor is already automating what your team still does by hand.

The problem isn't AI. It's the ERP sitting between you and it. The systems that were supposed to run your business are now blocking your future. Vendor lock-in, perpetual fees, and closed APIs aren't just expensive - they're a strategic liability.

Agentic ERP

The ERP your AI agents can actually run.

CEL was designed from day one for the agentic age. Clean REST API. No middleware. No consultant. Any agent - Claude, GPT-4, custom - drives it directly.

  • Full REST API - every operation available programmatically
  • Works with Claude, GPT-4, or any agent that calls HTTP
  • Automate reordering, reconciliation, reporting end-to-end
  • No middleware layer - agent talks directly to the API
Explore the API
AI Agent - Procurement Automation
Run end-of-month reorder check across all warehouses
Scanning 1,284 SKUs across 6 locations for reorder triggers...
23 items below threshold. Cheapest supplier selected for each.
Creating 8 purchase orders totaling $47,320. Reviewing margins...
8 POs created. Journal entries recorded. Suppliers notified.
Next reorder check scheduled: Nov 1. Estimated savings vs manual: 14 hours.

Why enterprises are leaving SAP and Dynamics.

🤖

AI is blocked

Connecting an agent to SAP requires a six-figure middleware project - if it's possible at all. Competitors who can automate operations will outrun you.

🔒

Vendor lock-in

Your processes, your data, your customizations - all encoded in a format only the vendor can read. Switching costs are designed to keep you captive forever.

💸

Perpetual ransom

$50k to implement. Then maintenance fees. Then upgrade fees. Then consultant fees when you need a new field. You never stop paying.

😱

Staff abandon it

The system is so unintuitive that staff default to spreadsheets. The ERP becomes a compliance artifact, not an operating tool. Your data is never actually right.

What 'Code Elastic Layer' means in practice.

CEL is not just a cheaper ERP. It's an elastic foundation - one that stretches to fit your business, your agents, and your future.

Any agent, any workflow

Clean REST endpoints for every operation: purchasing, inventory, invoicing, reconciliation. Whatever calls HTTP can drive CEL. No connectors. No adapters.

🧩

Extend the core

Source-available under BUSL 1.1. Read the code, audit it, fork it, add modules. When your business outgrows standard workflows, you extend - not replace.

🏭

Runs anywhere, your way

Self-host on-premise, on a private cloud, or on a VPS you control. Your data never touches our servers unless you choose. Data sovereignty is the default, not a premium tier.

📦

Open data, always

Standard Postgres. Export everything as CSV or JSON. Integrate with anything that speaks HTTP. No proprietary lock-in at the data layer.

The CEL model

You control the system. The system serves you.

📄

Source available - fork it, run it forever

Published under BUSL 1.1. Read the code, audit it, deploy it. No black boxes. No trust-us-it's-secure.

👥

Staff actually use it

Intuitive enough that your team uses it correctly from day one. When staff use the system, records are right. When records are right, everything downstream works.

What the next 5 years cost you - 50 users

SAP Business One $350,000+
Implementation + licenses + annual maintenance + customizations
Microsoft Business Central $180,000+
$70/user/mo + implementation + partner fees
CEL Free
Software is free. No implementation fees. No per-user costs.

Ready to build on CEL?

Download and deploy yourself

Run it on your infrastructure today. No sales call. No implementation consultant required. No account needed.

Download CEL

Team - $99/mo

Deploy Celerp across your whole team from a shared database. Unlimited users, never per seat.

Start free trial

Talk to us about enterprise deployment

Deploying across multiple sites, need custom modules, or want help migrating from SAP? Let's talk.

Talk to us about enterprise deployment