VS Code

FIXSIM for VS Code

io.github.gammathreetrading/fixsim

Test FIX from Claude, ChatGPT, or Cursor: free sandbox FIX sessions or your own FIXSIM instances.

client:VS Code transport:streamable-http tools:21

Install FIXSIM in VS Code

.vscode/mcp.json

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

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs

What VS Code can do once it is connected

FIXSIM in other clients

FIXSIM MCP server