fx — topup MCP Tool
fx
(fx) is one of 9 tools on the
topup
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call fx from your client
- Claude Code topup fx run in your project directory
- Claude Desktop topup fx ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor topup fx ~/.cursor/mcp.json
- VS Code topup fx .vscode/mcp.json
- Zed topup fx ~/.config/zed/settings.json
- Windsurf topup fx ~/.codeium/windsurf/mcp_config.json
- Cline topup fx ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI topup fx ~/.gemini/settings.json
- Grok topup fx .mcp.json (in your project root)
- ChatGPT topup fx Settings → Connectors → Advanced → Developer mode
- Claude.ai topup fx Settings → Connectors → Add custom connector
- LangChain topup fx pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http topup https://iomarkets.app/mcpOther tools on this server
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.