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Cline XOOMAR market data fails_to_deliver

How to: Cline XOOMAR market data fails_to_deliver

client:Cline transport:streamable-http tool:fails_to_deliver

Add XOOMAR market data to Cline

  1. 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": {
    "xoomar-mcp": {
      "url": "https://xoomar.com/mcp"
    }
  }
}
  1. 02

    Save the file and restart Cline.

  2. 03

    Ask for something fails_to_deliver does. Cline lists the server's tools on connect and calls fails_to_deliver itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that XOOMAR market data'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

XOOMAR market data will not start until these are set, so fails_to_deliver never becomes available.

  • XOOMAR_API_KEY
  • XOOMAR_MAX_ROWS

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.