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mcp/harbor
Grok

PostRelay for Grok

io.post-relay/postrelay

Let your AI post one approved creative to X, LinkedIn, Instagram, YouTube, TikTok and Facebook.

client:Grok transport:streamable-http

Install PostRelay in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "postrelay": {
      "type": "http",
      "url": "https://post-relay.io/api/public/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

PostRelay in other clients

PostRelay MCP server