INDIVIDUAL MCP TOOL

fixsim_act_on_orders

Respond to orders the user's system sent into FIXSIM: acknowledge, fully or partially execute, reject, cancel remaining, expire, done-for-day, restate, or accept/reject a pending cancel/replace.

fixsim.comnone authenticationAvailability not checked

LIVE ENDPOINT

https://mcp.fixsim.com/mcp

No auth detected

Connect to this endpoint to inspect the live schema for fixsim_act_on_orders and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Potential side effects detected · medium confidence · heuristic, not a guarantee.

A tool name or description suggests code or command execution.

Parent server

fixsim.com

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.fixsim]
url = "https://mcp.fixsim.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "fixsim": {
      "type": "http",
      "url": "https://mcp.fixsim.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: fixsim
Remote MCP URL: https://mcp.fixsim.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "fixsim": {
      "url": "https://mcp.fixsim.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "fixsim": {
      "type": "http",
      "url": "https://mcp.fixsim.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "fixsim",
  "transport": "streamable-http",
  "url": "https://mcp.fixsim.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

fixsim_list_orders_out — Orders FIXSIM sent OUT on a session (created with fixsim_send_order).
sandbox_get_status — Is the user's FIX engine connected to the sandbox session?
fixsim_send_order — Have FIXSIM send a New Order Single (35=D) OUT on a session to the user's system, so they can test how their system handles inbound orders.
fixsim_list_orders_in — Orders the user's trading system sent INTO FIXSIM on a session (FIXSIM is the counterparty).
fixsim_list_executions_in — Execution reports the user's system sent INTO FIXSIM on a session (when FIXSIM is the order sender and the user's system is the executing side).
sandbox_set_autofill — Turn automatic fills on or off for a sandbox session.
fixsim_cancel_order_out — Have FIXSIM send an Order Cancel Request (35=F) for an order it previously sent out with fixsim_send_order.
fixsim_list_sessions — List the FIX sessions on an instance with their FIX version, CompIDs, acceptor/initiator role, host/port, enabled and logged-in state, and sequence numbers.