ERP to MCP: Connect Your ERP to Claude and ChatGPT

TL;DR: AnythingMCP turns your ERP into MCP tools that Claude, ChatGPT and Copilot can call. Seventeen ERPs have a ready adapter, and SAP S/4HANA on-premise has two (install one, paste the credentials, done in about ten minutes); any other ERP connects through its REST API, its SOAP services or read-only through its SQL database. It runs self-hosted or on AnythingMCP Cloud, and every call is audited.

Which ERPs are supported

† Built from the vendor's published API documentation and not yet exercised against a live tenant. If you run one of these, tell us what you find.

Accounting and invoicing tools (Lexware Office, sevDesk, Exact Online, bexio, Fortnox, Moneybird…) are in the connector catalog too.

Step 1 — Run AnythingMCP

Use AnythingMCP Cloud if your ERP is reachable from the internet. If it sits on your own network (SAP Business One on a local server, S/4HANA on-premise, JTL-Wawi, Dynamics NAV), self-host AnythingMCP next to it:

mkdir anythingmcp && cd anythingmcp
curl -fsSLo docker-compose.yml \
  https://raw.githubusercontent.com/HelpCode-ai/anythingmcp/main/docker-compose.quickstart.yml
printf 'JWT_SECRET=%s\nENCRYPTION_KEY=%s\n' "$(openssl rand -hex 32)" "$(openssl rand -hex 32)" > .env
docker compose up -d   # → http://localhost:3000

For an internal hostname, add it to SSRF_ALLOWED_HOSTS; AnythingMCP refuses private addresses by default.

Step 2 — Install your ERP's connector

Click Install in the table above (Cloud), or open Connectors → Store on your own instance and pick your ERP. Enter the API credentials the setup guide lists; the import makes one test call and tells you whether the credentials work.

Create the credentials with an ERP user that sees only what the AI should see. The AI inherits exactly those rights, no more.

Step 3 — Decide what the AI may do

Most ERP adapters only read. The ones that can write (SAP Business One can create sales orders, Odoo and ERPNext can create and update records, Dynamics NAV can update OData pages) mark those tools as writing. Start with an MCP server whose role whitelists only the read tools; add write tools later, one by one.

Step 4 — Connect Claude, ChatGPT or Copilot

• Claude: Customize → Connectors → Add custom connector, paste the MCP server URL. Step by step: how to add a custom connector to Claude.
• ChatGPT: add the same public HTTPS URL as a custom MCP server under Plugins (+, Add custom MCP server).
• Claude Code, Cursor, VS Code / Copilot: add the URL with an X-API-Key header.

Your ERP isn't listed?

That is the normal case for custom, older or on-premises ERPs, and it is what AnythingMCP was built for at KOCH Freiburg, where it connects an on-premises ERP, a CRM, SOAP services and databases to AI assistants:

• The ERP has a REST API: import its OpenAPI spec and every endpoint becomes a tool. See OpenAPI to MCP.
• It has an OData API (SAP ECC and BW through SAP Gateway, Dynamics, many others): an OData connector reads $metadata directly, with labels, keys and units. See OData to MCP.
• It exposes SOAP web services (common for older .NET and Java ERPs): import the WSDL. See SOAP to MCP.
• Only the database is reachable: connect SQL Server, Oracle, SAP HANA, PostgreSQL or MySQL with a read-only database user. See database to MCP and SQL Server to Claude.

Example prompts

• "Which customer orders over 10,000 EUR are still open, and since when?"
• "Which items are below their reorder level in the main warehouse?"
• "List the invoices that are more than 30 days overdue, grouped by customer."
• "Which quotations did we send last month that the customer has not accepted?"
• "Compare this quarter's revenue with the same quarter last year."
• "Draft a sales order for customer 10023: 20 units of item A-4711." (write tool, needs an explicit role)

Security and governance

• Read-only first: roles decide which tools each MCP server exposes; clients never see the others.
• Least privilege at the source: the ERP user behind the credentials limits what any tool can reach.
• Response mapping strips fields such as bank details or salaries before they reach the model.
• Audit log: every call with input, output, duration and status, in your own database when self-hosted.
• SSO and SCIM (Entra ID, Okta, Google, Auth0) come with the self-hosted Business edition.

FAQ

How do I connect my ERP to Claude? Install the ERP's adapter in AnythingMCP, enter the API credentials, and add your MCP server URL to Claude as a custom connector. If there is no adapter, connect the ERP's REST API, SOAP services or database directly.

Can ChatGPT read my ERP data too? Yes. The same MCP server works in ChatGPT as a connector. ChatGPT connects from the internet, so the URL must be public HTTPS, for example on AnythingMCP Cloud.

Can the AI change data in my ERP? Only through tools that write, and only if you give a role access to them. Most ERP adapters only read.

Does my ERP data leave my network? Self-hosted, the credentials and the audit log stay on your server. Only the fields a tool returns go to the AI model you use, and response mapping lets you remove fields before they do.

What does it cost? Self-hosting is open source (AGPL-3.0, commercial use inside your company included) and free for up to 3 users. AnythingMCP Cloud starts with a 7-day free trial.

What if we need help connecting an ERP that is not in the list? Open an adapter request on GitHub, or contact helpcode.ai, the team behind AnythingMCP.

AnythingMCP vs a dedicated ERP MCP server vs a custom integration

Related

• E-commerce to MCP: the shops and marketplaces that feed your ERP
• SAP to Claude and weclapp to MCP
• SAP S/4HANA via HANA SQL and OData to MCP: the two routes to S/4HANA on-premise
• AnythingMCP on GitHub: the open-source code
• erp-mcp-server: every ERP connector in one repository, with a verification status per system
• Claude connectors