Cline Epsilon order_preflight

How to: Cline Epsilon order_preflight

client:Cline transport:streamable-http tool:order_preflight

Add Epsilon to Cline

01
Open ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "epsilon": {
      "url": "https://api.epsilon.exchange/mcp"
    }
  }
}

02
Save the file and restart Cline.
03
Ask for something order_preflight does. Cline lists the server's tools on connect and calls order_preflight itself — you do not invoke it by name.
04
If nothing happens, check the server is running and that Epsilon's identifier in your config matches the one above exactly.

Cline's MCP Servers pane edits this file for you if you would rather not find it. Cline docs

Set these first

Epsilon will not start until these are set, so order_preflight never becomes available.

EPSILON_API_KEY
EPSILON_WALLET_KEY
EPSILON_REFERRER

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.

Epsilon MCP server