MCP Connection Guide

Connect AI assistants to your merchant account via the Model Context Protocol

MCP (Model Context Protocol) exposes the same operations as the REST API as tools for AI assistants. Connect once with your API token and the assistant discovers all 27 tools automatically.

MCP endpoint

https://admin.onepay.tabsystems.tech/mcp

1. Create a token

Create an API token on the API Tokens page (Profile → API Tokens)

A token inherits the role of the user who created it and can be revoked or given an expiry on the profile page — revocation takes effect immediately for both REST and MCP.

2. Configure your client

claude mcp add payment-system https://admin.onepay.tabsystems.tech/mcp \
  --transport http \
  --header "Authorization: Bearer psk_your_token_here"

{
  "mcpServers": {
    "payment-system": {
      "url": "https://admin.onepay.tabsystems.tech/mcp",
      "headers": {
        "Authorization": "Bearer psk_your_token_here"
      }
    }
  }
}

https://admin.onepay.tabsystems.tech/mcp

Available tools

Invoices

create_invoice
get_invoice
list_invoices
update_invoice_status
delete_invoice
create_payment_link
send_invoice

Customers

create_customer
get_customer
list_customers
update_customer
delete_customer

Items

create_item
list_items
update_item
delete_item

Users

create_user
list_users
update_user
delete_user

Merchant

get_merchant

Webhook

get_webhook
set_webhook
send_test_webhook
list_webhook_deliveries
rotate_webhook_secret
delete_webhook