FIXSIM for Claude.ai
io.github.gammathreetrading/fixsim
Test FIX from Claude, ChatGPT, or Cursor: free sandbox FIX sessions or your own FIXSIM instances.
client:Claude.ai
transport:streamable-http
tools:21
Install FIXSIM in Claude.ai
Settings → Connectors → Add custom connector
https://mcp.fixsim.com/mcpClaude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs
What Claude.ai can do once it is connected
- 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_create_session
- sandbox_end_session
- fixsim_send_raw_fix
- fixsim_list_instances
- fixsim_list_securities
- sandbox_get_session