Gateway MCP Server

by agonx402io.github.Agonx402/agon-gatewayv0.4.2

MCP server for Agon Gateway x402, Helius Wallet, and Tokens API market data.

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Install Gateway MCP server

claude mcp add gateway-agonx402 -- npx -y @agonx402/gateway-mcp

{
  "mcpServers": {
    "gateway-agonx402": {
      "command": "npx",
      "args": [
        "-y",
        "@agonx402/gateway-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "gateway-agonx402": {
      "command": "npx",
      "args": [
        "-y",
        "@agonx402/gateway-mcp"
      ]
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "gateway-agonx402": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@agonx402/gateway-mcp"
      ]
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "gateway-agonx402": {
      "command": "npx",
      "args": [
        "-y",
        "@agonx402/gateway-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
AGON_GATEWAY_BASE_URL	—	—	Optional Agon Gateway base URL. Defaults to https://gateway.agonx402.com.
AGON_SIGNER_COMMAND	—	—	Executed only by agon_gateway_auth_call after an HTTP 402: spawns once with the normalized auth-request JSON on stdin (same shape as agon_gateway_prepare_auth). Stdout must be JSON auth output (headers map, or SIWX address+signature). On Windows, npx/npm run under cmd.exe; treat AGON_SIGNER_COMMAND as untrusted if an attacker controls it.
AGON_WALLET_PROFILE	—	—	Optional Agon wallet profile hint passed to signer hooks.
AGON_PAYMENT_MAX_AMOUNT_USD	—	—	Optional x402 maximum USD amount per request.
AGON_PAYMENT_DAILY_LIMIT_USD	—	—	Optional x402 daily authorized spend limit in USD.