Winter0x MCP Server

by winter0xio.github.winter0x/lighter-mcpv0.1.1

Read Lighter perpetual markets and place guarded orders, including the H100 compute-price market.

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Maintained45d ago

Install Winter0x MCP server

claude mcp add winter0x-winter0x -e LIGHTER_API_KEY_PRIVATE_KEY='<lighter-api-key-private-key>' -e LIGHTER_READ_ONLY_TOKEN='<lighter-read-only-token>' -- npx -y lighter-mcp

{
  "mcpServers": {
    "winter0x-winter0x": {
      "command": "npx",
      "args": [
        "-y",
        "lighter-mcp"
      ],
      "env": {
        "LIGHTER_API_KEY_PRIVATE_KEY": "<lighter-api-key-private-key>",
        "LIGHTER_READ_ONLY_TOKEN": "<lighter-read-only-token>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "winter0x-winter0x": {
      "command": "npx",
      "args": [
        "-y",
        "lighter-mcp"
      ],
      "env": {
        "LIGHTER_API_KEY_PRIVATE_KEY": "<lighter-api-key-private-key>",
        "LIGHTER_READ_ONLY_TOKEN": "<lighter-read-only-token>"
      }
    }
  }
}

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

{
  "servers": {
    "winter0x-winter0x": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "lighter-mcp"
      ],
      "env": {
        "LIGHTER_API_KEY_PRIVATE_KEY": "<lighter-api-key-private-key>",
        "LIGHTER_READ_ONLY_TOKEN": "<lighter-read-only-token>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "winter0x-winter0x": {
      "command": "npx",
      "args": [
        "-y",
        "lighter-mcp"
      ],
      "env": {
        "LIGHTER_API_KEY_PRIVATE_KEY": "<lighter-api-key-private-key>",
        "LIGHTER_READ_ONLY_TOKEN": "<lighter-read-only-token>"
      }
    }
  }
}

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

Configuration

Variable	Required	Secret	Description
LIGHTER_NETWORK	—	—	Deployment to read: mainnet, testnet, or robinhood. Defaults to mainnet.
LIGHTER_ACCOUNT_INDEX	—	—	Sub-account the agent trades from. Read-only tools work without it.
LIGHTER_API_KEY_INDEX	—	—	API key slot bound to the sub-account, 0 to 254.
LIGHTER_API_KEY_PRIVATE_KEY	—	yes	API key private key. Full write authority over the account it is bound to, so use a dedicated sub-account.
LIGHTER_MAX_NOTIONAL_USD	—	—	Per-order notional ceiling in USD. Required before any order can be signed.
LIGHTER_CHAIN_ID	—	—	Layer-2 chain id bound into every signature. Mainnet uses 304 and testnet 300, so this is only needed on a deployment that publishes none.
LIGHTER_READ_ONLY_TOKEN	—	yes	Read-only token for account observation without a signing key.

Freshness

Maintained — last maintenance signal 45d ago. The newest of the signals below sets the band.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-08-26 · 45d ago · official registry · v0.1.1

FAQ

›How do I install the Winter0x MCP server in Claude Code?

Run: claude mcp add winter0x-winter0x -e LIGHTER_API_KEY_PRIVATE_KEY='<lighter-api-key-private-key>' -e LIGHTER_READ_ONLY_TOKEN='<lighter-read-only-token>' -- npx -y lighter-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Winter0x require an API key?

Yes. It expects LIGHTER_API_KEY_PRIVATE_KEY, LIGHTER_READ_ONLY_TOKEN, of which 2 are secrets.

›Can I use Winter0x as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Winter0x in the official MCP registry?

Yes, as io.github.winter0x/lighter-mcp.