Remote MCP

Remote MCP for payments

zahls.ch exposes the REST API as MCP tools. Connect Cursor, Claude or agent frameworks — create payment links, trigger invoices, check status. No custom backend in between.

How to connect MCP Sign up free

Connected in minutes

One endpoint and two headers. Get your API key and instance name in the dashboard under API and integrations.

API and integrations

Endpoint: https://www.zahls.ch/mcp
Headers: X-API-KEY, X-Instance

Example (Cursor / MCP JSON)

{
  "mcpServers": {
    "zahls-ch": {
      "url": "https://www.zahls.ch/mcp",
      "headers": {
        "X-API-KEY": "DEIN_API_SCHLUESSEL",
        "X-Instance": "deine-instanz"
      }
    }
  }
}

Replace the placeholders, reload the client — done.

What the tools can do

Payment links

Create, share and manage links — one-off or for subscriptions.

Invoices & donations

Create formal invoices and donation forms straight from the agent.

Status & refunds

Query transactions and initiate refunds.

Works with your client

Any client with remote MCP (HTTP) and custom request headers.

Cursor

Project or user MCP config — tools show up in the tool list.

Open guide

Claude

Remote MCP clients with custom headers use the same endpoint.

Open guide

OpenClaw

Open-source agent gateway: register zahls.ch as an MCP server.

OpenClaw integration

Hermes

Hermes Agent with a native MCP client — tools as first-class capabilities.

Hermes integration

Typical use cases

Create and send a payment link in a support chat

Generate an invoice or donation link for a campaign

Check payment status before the agent starts the next action

Create a subscription or prepare a refund

MCP + webhooks

MCP fits synchronous actions (create, query). For async events when a payment arrives, still set up webhooks — they complement each other.

Webhooks in help

Use it safely

Use a dedicated API key for the MCP client — rotate if needed
Never put keys in prompts or public repos
Constrain critical actions (high amounts, refunds) in the prompt

Ready for your first MCP call?

Create an account, generate an API key, connect your client — no setup fees.