MCP server for SignalK marine data integration
Signalk mcp server lets Claude, Cursor and other MCP clients work with Signalk directly. MCP server for SignalK marine data integration.
A Model Context Protocol (MCP) server that provides AI agents with efficient access to SignalK marine data using code execution in V8 isolates. This approach reduces token usage by 90-96% compared to traditional MCP tools.
Once connected, the assistant can call these 5 tools directly:
Installation — The Installation tool exposed by this serverPrerequisites — The Prerequisites tool exposed by this serverSetup — The Setup tool exposed by this serverTesting — The Testing tool exposed by this serverSecurity — The Security tool exposed by this serverThe server is distributed via npm as signalk-mcp-server, so most clients can run it without a manual build step. Add it to your MCP client's configuration and restart the client to pick it up — the copy-paste configs for Claude Desktop, Claude Code and Cursor are on this page.
The server reads 4 environment variables: SIGNALK_HOST, SIGNALK_PORT, SIGNALK_TLS, EXECUTION_MODE. Keep credentials in your client's env block or a secrets manager rather than committing them.
Developer-tool servers are usually the first ones people connect, because they turn "help me with this code" into an assistant that can actually read the repo and act on it. Signalk sits in that group, and the shape of its toolset — Installation, Prerequisites, Setup among others — tells you what it is really for. Worth comparing against the other developer tools servers in this directory before you commit to one, since several overlap in scope but differ sharply in setup cost and permissions.
| Tool | What it does |
|---|---|
| Installation | The Installation tool exposed by this server. |
| Prerequisites | The Prerequisites tool exposed by this server. |
| Setup | The Setup tool exposed by this server. |
| Testing | The Testing tool exposed by this server. |
| Security | The Security tool exposed by this server. |
{
"mcpServers": {
"signalk": {
"env": {
"EXECUTION_MODE": "tools"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| SIGNALK_HOST | Endpoint or connection string the server talks to. | Optional |
| SIGNALK_PORT | Configuration value read at startup. | Optional |
| SIGNALK_TLS | Configuration value read at startup. | Optional |
| EXECUTION_MODE | Configuration value read at startup. | Optional |
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