Automate your ERP without opening it to the internet.

Your ERP sits on the internal network for a reason. Trelium installs next to it, reads the POs, invoices, and order emails your team keys in today, and writes the results into the ERP, with a person approving anything that doesn't match.

Public internet
Your network

ERP

Mail server

File shares

Identity

Trelium
Self-hosted
Customer data stays inside your perimeter

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Why ERP automation ends up on-prem.

Most teams start looking at self-hosting for one of these three reasons. Usually it's all three.

  1. 1

    The ERP isn't on the internet

    Many ERPs, especially on-prem installs, only accept connections from inside the network. A cloud tool needs a tunnel or a firewall exception to reach them. Trelium doesn't, because it runs on the same network.

  2. 2

    The documents are sensitive

    Customer POs, contract pricing, and supplier invoices are exactly the data your security team doesn't want copied to another vendor's servers.

  3. 3

    ERP changes go through change control

    Nothing touches the ERP without review. On-prem upgrades follow your change calendar, so the agents don't change unless your team signs off.

Agents sit next to your ERP.

Trelium runs on the same network as the ERP. Connectors talk to it directly, and every write is recorded in an audit store you own.

1Connectors
Talk to your ERP, databases, mail server, and file shares over the internal network. None of them gets exposed to the internet.
2Agent runtime
Does the actual work, from reading a PO attachment to posting the sales order, on servers you operate.
3Data and audit store
Run history, source documents, and audit logs are written to your storage and kept as long as your retention policy says.
4Admin and identity
People sign in through your identity provider. Roles and approvals work the same way they do in Trelium Cloud.
Your network

Your systems

  • ERP
  • Order inbox
  • File shares
  • Identity provider
TreliumSelf-hosted on your servers
  1. 1Connectors
  2. 2Agent runtime
  3. 3Data and audit store
  4. 4Admin console
Model endpoint
Public internet. Your systems are never exposed to it.

What your ERP owner and auditors will ask about.

Agents write to the system of record, so the controls are built around who can change what, and proving it afterwards. Read the security overview.

  • Approvals

    Nothing posts without sign-off

    Require a person to approve an order, a change, or a bill before the agent writes it to the ERP.

  • Identity

    Segregation of duties

    Roles are separate, so the person who builds an agent doesn't have to be the person who approves what it posts.

  • Audit

    Every ERP write traced to its source

    Each entry is logged with the document that started it, the decision the agent made, and who approved it.

  • Data location

    Data stays in your perimeter

    Orders, pricing, and supplier records stay on infrastructure you control, next to the ERP.

  • Model training

    Never used to train AI

    Nothing processed through Trelium, including orders and pricing, is used to train, fine-tune, or improve any model.

For procurement and legal

SOC 2 Type II
Audit in progress
Vendor risk packet
Ready to share on request
DPA and MSA
Available for legal review

Three places to run it.

It usually comes down to one question: can this data leave your network? If not, self-host. If it can, Trelium Cloud means there is nothing to install.

Self-hosted

Your data center

Hardware you own

Best for
ERPs and file shares that live on your own hardware
Data location
Inside your network
Operated by
Your IT team, with our engineers
Upgrades
Scheduled with your change windows
Platform
Full platform, next to your ERP and file shares

Self-hosted

Your private cloud

Your cloud account

Best for
Teams that already run their workloads in a cloud account
Data location
Inside your network
Operated by
Your IT team, with our engineers
Upgrades
Scheduled with your change windows
Platform
Full platform, under your cloud security policies and logging

Managed

Trelium Cloud

Operated by Trelium

Best for
Data that is allowed to sit in a US or EU region
Data location
US or EU region
Operated by
Trelium
Upgrades
Rolled out automatically
Platform
Full platform. Move on-prem later without rebuilding agents

What your IT team will need.

This is the checklist our engineers go through with you during scoping, before anything gets installed.

Infrastructure
Servers in your data center or private cloud. How many depends on how many agents you plan to run, so we size it together.
Storage
Persistent storage for run history, source documents, and audit logs.
Network access
Internal routes from Trelium to each system an agent works in: your ERP, mail server, file shares, and anything else in scope.
Model access
A model endpoint your security team has approved. If you don't have one yet, we'll go through the options against your data policies.
Identity
A SAML identity provider, such as Okta, Google Workspace, or Microsoft Entra.
Your team
Someone from IT to own the install and upgrades, and one person who owns each workflow you automate.

Bring the network diagram to the call.

Thirty minutes with our engineers. We'll go through where Trelium sits in your network, what it connects to, and how model access works. Bring your IT and security leads.

Questions about on-prem ERP automation.

  • Trelium works with ERPs like SAP, Oracle, NetSuite, and Microsoft Dynamics. Where an ERP has an API, Trelium connects to it directly. Where it doesn't, a browser agent can work through the approved web interface instead.

  • Yes, that is how agents enter orders, update them, and create POs and bills. You decide whether a person has to approve each write before it happens.

  • The agent stops and sends it to a person instead of posting it. Nothing unusual runs through silently.

  • Yes. Building agents, running them, and approving their work are separate roles, so the same person doesn't have to do all three.

  • Yes. Every input, decision, and action is logged, so any entry can be traced back to the document that started it and the person who approved it.

  • No. Trelium runs inside the same network as the ERP, so agents reach it over internal routes and the ERP stays closed to the internet.

  • Not without your sign-off. On-prem upgrades are scheduled with your team on your change calendar, never pushed automatically.

  • No. Nothing processed through Trelium, including orders, pricing, and customer records, is used to train, fine-tune, or improve any AI model, by Trelium or any third party.