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Add Service

An MCP tool from the Hetzner Cloud API server, hosted on mcp.hjlabs.in.

Add Service Adds a service to a Load Balancer. #### Operation specific errors | Status | Code | Description | | --- | --- | --- | | 412 | source_port_already_used | The source port you are trying to add is… [POST /load_balancers/{id}/actions/add_service]

Name on the gateway: hetzner_api__add_load_balancer_service · may change things.

Parameters

NameTypeDescription
id requiredintegerID of the Load Balancer.
protocol requiredtcp | http | httpsProtocol of the Load Balancer.
listen_port requiredintegerPort the Load Balancer listens on.
destination_port requiredintegerPort the Load Balancer will balance to.
proxyprotocol requiredbooleanIs Proxyprotocol enabled or not.
health_check requiredobjectService health check.
httpobjectConfiguration option for protocols http and https.

How to call it

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments
{
  "name": "hetzner_api__add_load_balancer_service",
  "arguments": {
    "id": 0,
    "protocol": "…",
    "listen_port": 0,
    "destination_port": 0,
    "proxyprotocol": true,
    "health_check": "…"
  }
}

Or connect the Hetzner Cloud API server directly, which lists 178 tools including this one:

Run in your terminal
claude mcp add --transport http hj-hetzner-api https://mcp.hjlabs.in/mcp/hetzner-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Try asking

Use the add service tool with id set to ….

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