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mcp/harbor
Windsurf

PayStage for Windsurf

xyz.paystage/mcp

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

client:Windsurf transport:stdio runtime:npm

Install PayStage in Windsurf

~/.codeium/windsurf/mcp_config.json · windows: %USERPROFILE%\.codeium\windsurf\mcp_config.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>"
      }
    }
  }
}

Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs

PayStage in other clients

PayStage MCP server