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mcp/harbor
Gemini CLI

PayStage for Gemini CLI

xyz.paystage/mcp

Umbrella MCP: payment preflight, auth watch, HIP-3 trade preflight, velocity checks

client:Gemini CLI transport:stdio runtime:npm

Install PayStage in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@paystage/mcp"
      ],
      "env": {
        "PAYSTAGE_POLICY_PATH": "<PAYSTAGE_POLICY_PATH>",
        "PAYSTAGE_RPC_URL": "<PAYSTAGE_RPC_URL>"
      }
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs

PayStage in other clients

PayStage MCP server