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mcp/harbor
Grok

signal for Grok

com.returnonsecurity/signal

Cybersecurity market intelligence: funding rounds, M&A, investors, valuations, corporate lineage.

client:Grok transport:streamable-http

Install signal in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "signal": {
      "type": "http",
      "url": "https://mcp.returnonsecurity.com/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

signal in other clients

signal MCP server