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mcp/harbor
Grok

thirdtrail for Grok

io.github.thirdtrail/thirdtrail

Elevation-corrected sun, moon, twilight, solar and tide data for any point on Earth

client:Grok transport:streamable-http

Install thirdtrail in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "thirdtrail": {
      "type": "http",
      "url": "https://thirdtrail.life/mcp"
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

thirdtrail in other clients

thirdtrail MCP server