Lws MCP Server

lws-mcp

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An MCP server for the LWS Client API. Manage your domains, DNS zones, hosting and account from Claude, Cursor or any MCP client:

"Add the CNAME records Stripe gave me to example.fr, then tell me when they are live."

It covers the whole LWS Client API (29 endpoints), plus a propagation check that compares your LWS zone, its nameservers and three public resolvers.

Community project, not affiliated with or endorsed by LWS.

Tools

¹ Paid: off unless LWS_ENABLE_PURCHASES=true. ² Only in test mode.

DNS record names can be written in full (_dmarc.example.fr): they are shortened to what the LWS zone expects (_dmarc, @).

Safety

An assistant with access to your DNS can take a site or a mailbox down, and one with access to purchases can spend money. So:

• Purchases are off by default. buy_hosting and renew_hosting only exist when LWS_ENABLE_PURCHASES=true.
• Read-only mode. LWS_READ_ONLY=true removes every tool that changes something.
• Hints for your client. Every tool declares whether it reads, writes or destroys (tool annotations), so clients can ask before running it.
• Test environment. LWS_TEST_MODE=true sends every request to the LWS sandbox.
• Your key stays local. It goes only to api.lws.net, and is never logged or returned to the model.

Requirements

• An LWS account and its API key: LWS Panel → your account number (LWS-XXXXXX, top right) → Api LWS → Clé API en mode PRODUCTION → voir. LWS guide.
• The public IP address of the machine running the server, allowed on the same Api LWS page. Otherwise every call fails with bad source <your IP>.
• uv (it fetches Python and the server for you).

Installation

Every client runs the same command, uvx lws-mcp, with LWS_LOGIN and LWS_API_KEY in its environment (see Configuration for the optional settings).

The buttons leave LWS_LOGIN and LWS_API_KEY empty: fill them in after installing.

claude mcp add lws \
  -e LWS_LOGIN=123456 \
  -e LWS_API_KEY=your-api-key \
  -- uvx lws-mcp

codex mcp add lws \
  --env LWS_LOGIN=123456 \
  --env LWS_API_KEY=your-api-key \
  -- uvx lws-mcp

Or in ~/.codex/config.toml:

[mcp_servers.lws]
command = "uvx"
args = ["lws-mcp"]
env = { LWS_LOGIN = "123456", LWS_API_KEY = "your-api-key" }

Use the button above, or add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (one project):

{
  "mcpServers": {
    "lws": {
      "command": "uvx",
      "args": [
        "lws-mcp"
      ],
      "env": {
        "LWS_LOGIN": "123456",
        "LWS_API_KEY": "your-api-key"
      }
    }
  }
}

code --add-mcp '{"name":"lws","command":"uvx","args":["lws-mcp"],"env":{"LWS_LOGIN":"123456","LWS_API_KEY":"your-api-key"}}'

Or in .vscode/mcp.json:

{
  "servers": {
    "lws": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "lws-mcp"
      ],
      "env": {
        "LWS_LOGIN": "123456",
        "LWS_API_KEY": "your-api-key"
      }
    }
  }
}

Add this block to the client's MCP file:

{
  "mcpServers": {
    "lws": {
      "command": "uvx",
      "args": [
        "lws-mcp"
      ],
      "env": {
        "LWS_LOGIN": "123456",
        "LWS_API_KEY": "your-api-key"
      }
    }
  }
}

Configuration

Good to know

• Deferred actions. Nameserver changes, transfer protection, auth codes, purchases and renewals are processed in the background. Follow them with list_pending_requests.
• Propagation. A DNS change can take from minutes to a few hours to be seen everywhere: each resolver keeps the old answer until its TTL runs out. check_dns_propagation compares what is saved in the LWS zone, what the domain's nameservers answer (no cache) and what Cloudflare, Google and Quad9 answer, then says how long a stale answer can last. Some networks block direct DNS queries to nameservers; the resolvers are asked over HTTPS, so that part always works.
• Record ids change. LWS replaces a record under a new id when it is updated. add_dns_record and update_dns_record return the current id.
• Rate limit. LWS refuses bursts of requests (about fifteen in a row) with Invalid input (rate limit): wait a minute and retry.
• Allowed TTLs. 900, 1800, 3600, 7200, 21600, 43200 or 86400 seconds.

Development

git clone https://github.com/NKSTUD/lws-mcp && cd lws-mcp
uv sync
uv run pytest
uv run ruff check . && uv run ruff format --check .

Try it against your account with the MCP Inspector, credentials in a local .env (see .env.example):

npx @modelcontextprotocol/inspector uv run --env-file .env lws-mcp

See CONTRIBUTING.md to add a tool or fix a bug.

License

MIT