Fillgate MCP Server

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add fillgate -- npx -y @fillgate/mcp

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

[mcp_servers.fillgate]
command = "npx"
args = ["-y", "@fillgate/mcp"]

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

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

This one needs environment variables set before it will start: DRY_RUN (true = never broadcast; every execute returns a preview), MAX_NOTIONAL_USD (Hard cap per prepared order, in USD), MAX_SLIPPAGE_BPS (Reject quotes above this slippage), RATE_LIMIT_PER_MIN (Max prepare/execute calls per user per minute), FILLGATE_VENUES (Comma-separated venues to enable (jupiter,polymarket,hyperliquid). Unset = auto-detect from the configured write paths; only fully configured venues register their tools.), JUP_REFERRAL_ACCOUNT (Jupiter Ultra referral account (from scripts/setup-jupiter-referral.ts). Unset = swaps route the referral fee to Fillgate's own default account; the Jupiter tools are always registered.), OPERATOR_SOLANA_SECRET_KEY (Operator Solana wallet, base58 or JSON array secret key; MCP-operator only, never a user's key), PM_BUILDER_CODE (Polymarket builder code (Settings -> Builders); unset = orders earn no builder fee), OPERATOR_EVM_PRIVATE_KEY (Operator EVM wallet for Polymarket + Hyperliquid; MCP-operator only, never a user's key), HL_BUILDER_ADDRESS (Hyperliquid builder address; unset = orders earn no builder fee), HL_TESTNET (true = Hyperliquid testnet (default until mainnet builder collateral is funded)). The author declared them in the registry entry; get the values from the project itself.