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mcp/harbor
Grok

Apollo Invoicing for Grok

io.github.404-studio/apollo-invoicing

Manage Apollo invoices and customers with entity-scoped OAuth and optional read/write access.

client:Grok transport:streamable-http

Install Apollo Invoicing in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "apollo-invoicing": {
      "type": "http",
      "url": "https://eu.spaceinvoices.com/mcp/r/wlr_156199db8087faa6901fdb63ed664604"
    }
  }
}

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

Apollo Invoicing in other clients

Apollo Invoicing MCP server