vynst (inwendo ERP) connector for Claude and other AI assistants
vynst (inwendo ERP) is software for managing clubs and associations: members, fees, courses, bookings, events, invoices and communication. With this connector an AI assistant can read this data with your account and, where you allow it, propose or make changes.
Requirements
- An account at a vynst (inwendo ERP) installation (e.g.
club.vynst.de). - The installation has the MCP server and the OAuth login for MCP clients enabled
(Settings → MCP server, switch
mcp_oauth_discovery_enabled). An administrator of the installation does this once.
Connect
- Claude (claude.ai, desktop, mobile): Settings → Connectors → pick vynst (inwendo ERP) from the directory,
or “Add custom connector” with the URL
https://mcp.vynst.de/mcpLeave client ID and secret empty. - Claude Code:
claude mcp add --transport http vynst https://mcp.vynst.de/mcp - ChatGPT, Mistral Le Chat, VS Code, Cursor: add an MCP server with the same URL.
- When you connect, the login opens: enter the address of your vynst (inwendo ERP) installation, sign in with your account there and confirm the access.
Several installations? Connect more in the portal; tools then ask for the host.
What the assistant can do
Which tools appear depends on your permissions and the installation's settings. Examples:
| Area | Examples |
|---|---|
| Members & contacts | search people and family accounts, view memberships and contracts |
| Courses & events | dates, participants, sign-ups, free places |
| Bookings | occupancy of halls and courts, own bookings |
| Finance | invoices, open items, fees (depending on permissions) |
| Tickets & communication | create and handle requests, propose notifications |
| Reports | member numbers, trends, key figures |
| My area (members) | own data, invoices, bookings and sign-ups |
Example prompts: “How many active members does our tennis department have?”, “Which courses next week still have free places?”, “Show me the open invoices of the Muster family.”
Security and privacy
- The assistant never sees or does more than your vynst (inwendo ERP) account. You sign in at your own installation; the connector receives a token with your permissions there.
- Tools that change data are marked as such. By default, changes to other people's data are only created as a proposal that an authorized person approves in vynst (inwendo ERP).
- Every tool call is logged in the installation (audit log with configurable retention).
- Tokens are stored encrypted. To disconnect, remove the installation in the portal or disconnect the connector in your AI assistant; in vynst (inwendo ERP) the access can be revoked under OAuth clients.
- Data is hosted in Germany. See the privacy policy.
Help
“Login for AI assistants is not enabled on this installation yet”: ask the administrators of your installation to enable the switch. Questions and support: hello@inwendo.de.