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RASON

Build, solve, and analyze RASON optimization, simulation, data science, and decision models

build.protocol_tooling.mcp

Install RASON in your MCP client

RASON is a Model Context Protocol server. Add it to your MCP client config once, restart, and the server's tools become available to your AI assistant. The same JSON snippet below works across all four major clients — only the config file path differs.

  1. Locate your client's MCP config file.
    • Cursor: ~/.cursor/mcp.json
    • Claude Desktop (macOS): ~/Library/Application Support/Claude/claude_desktop_config.json
    • Claude Desktop (Windows): %APPDATA%\Claude\claude_desktop_config.json
    • VS Code: Settings → Extensions → MCP
    • Windsurf: Settings → MCP Servers
  2. Add RASON to the mcpServers map — paste the snippet below into your config file. If you already have other MCP servers, merge the entry into the existing mcpServers object.
  3. Restart your client so it picks up the new server.
  4. Verify — ask the assistant to list available tools; RASON's tools should appear.
{
  "mcpServers": {
    "rason": {
      "command": "npx",
      "args": [
        "-y",
        "@frontlinesystems/rason-mcp-server"
      ],
      "env": {
        "RASON_BEARER_TOKEN": "<your-rason-bearer-token>",
        "RASON_SERVER_URL": "<your-rason-server-url>",
        "RASON_RESULT_ARRAY_LIMIT": "<your-rason-result-array-limit>",
        "RASON_RESULT_SIZE_LIMIT": "<your-rason-result-size-limit>",
        "RASON_REQUEST_TIMEOUT": "<your-rason-request-timeout>"
      }
    }
  }
}

Install RASON in Cursor

Open ~/.cursor/mcp.json in your editor, paste the snippet above into mcpServers, save, and restart Cursor. RASON will show up in the assistant's tool list on next launch.

Install RASON in Claude Desktop (macOS)

Open ~/Library/Application Support/Claude/claude_desktop_config.json in your editor, paste the snippet above into mcpServers, save, and restart Claude Desktop (macOS). RASON will show up in the assistant's tool list on next launch.

Install RASON in Claude Desktop (Windows)

Open %APPDATA%\Claude\claude_desktop_config.json in your editor, paste the snippet above into mcpServers, save, and restart Claude Desktop (Windows). RASON will show up in the assistant's tool list on next launch.

Install RASON in VS Code

Open Settings → Extensions → MCP in your editor, paste the snippet above into mcpServers, save, and restart VS Code. RASON will show up in the assistant's tool list on next launch.

npm package: @frontlinesystems/rason-mcp-server

Required environment variables

RASON needs the following environment variables set before it can run. Add them to the env block of your mcpServers entry, or export them in your shell before launching the client.

  • RASON_BEARER_TOKEN
  • RASON_SERVER_URL
  • RASON_RESULT_ARRAY_LIMIT
  • RASON_RESULT_SIZE_LIMIT
  • RASON_REQUEST_TIMEOUT

Transport

RASON supports the following MCP transports. Most AI clients use stdio by default for locally-installed servers.

stdio

Other Model Context Protocol servers in the same space as RASON. Each one adds different capabilities to your AI assistant — pick based on the data sources or workflows you need.

Browse the full MCP server directory or use Stork's one-line install to let your agent pick the right server automatically.