sandbox_create_session — FIXSIM MCP Tool
sandbox_create_session
(sandbox create session) is one of 21 tools on the
FIXSIM
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call sandbox_create_session from your client
- Claude Code FIXSIM sandbox_create_session run in your project directory
- Claude Desktop FIXSIM sandbox_create_session ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor FIXSIM sandbox_create_session ~/.cursor/mcp.json
- VS Code FIXSIM sandbox_create_session .vscode/mcp.json
- Zed FIXSIM sandbox_create_session ~/.config/zed/settings.json
- Windsurf FIXSIM sandbox_create_session ~/.codeium/windsurf/mcp_config.json
- Cline FIXSIM sandbox_create_session ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI FIXSIM sandbox_create_session ~/.gemini/settings.json
- Grok FIXSIM sandbox_create_session .mcp.json (in your project root)
- ChatGPT FIXSIM sandbox_create_session Settings → Connectors → Advanced → Developer mode
- Claude.ai FIXSIM sandbox_create_session Settings → Connectors → Add custom connector
- LangChain FIXSIM sandbox_create_session pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http fixsim https://mcp.fixsim.com/mcpOther tools on this server
- fixsim_list_orders_out
- sandbox_get_status
- fixsim_send_order
- fixsim_list_orders_in
- fixsim_list_executions_in
- fixsim_act_on_orders
- sandbox_set_autofill
- fixsim_cancel_order_out
- fixsim_list_sessions
- fixsim_list_executions_out
- fixsim_get_session
- sandbox_act_on_order
- fixsim_get_order_in
- sandbox_get_orders
- sandbox_get_messages
- sandbox_end_session
- fixsim_send_raw_fix
- fixsim_list_instances
- fixsim_list_securities
- sandbox_get_session
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.