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RASON

Official registry AI and agents

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

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @frontlinesystems/rason-mcp-server
Claude Code 
claude mcp add rason -e 'RASON_BEARER_TOKEN=<your rason_bearer_token>' -e 'RASON_SERVER_URL=https://rason.net' -e 'RASON_RESULT_ARRAY_LIMIT=25' -e 'RASON_RESULT_SIZE_LIMIT=50000' -e 'RASON_REQUEST_TIMEOUT=300000' -- npx -y @frontlinesystems/rason-mcp-server@2026.5.5
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "rason": {
            "command": "npx",
            "args": [
                "-y",
                "@frontlinesystems/rason-mcp-server@2026.5.5"
            ],
            "env": {
                "RASON_BEARER_TOKEN": "<your rason_bearer_token>",
                "RASON_SERVER_URL": "https://rason.net",
                "RASON_RESULT_ARRAY_LIMIT": "25",
                "RASON_RESULT_SIZE_LIMIT": "50000",
                "RASON_REQUEST_TIMEOUT": "300000"
            }
        }
    }
}

Environment variables

  • RASON_BEARER_TOKEN required secret RASON API bearer token. Required for model management, solving, and diagnostics. Obtain at https://rason.com/.
  • RASON_SERVER_URL Base URL of the RASON REST API. /api is appended automatically.
  • RASON_RESULT_ARRAY_LIMIT Maximum array/dataFrame rows before solver results are summarized.
  • RASON_RESULT_SIZE_LIMIT Maximum solve-result size (in characters) before truncation.
  • RASON_REQUEST_TIMEOUT HTTP request timeout in milliseconds.
MCPB package https://github.com/FrontlineSystems/rason-mcp-server/releases/download/v2026.5.5/rason-mcp-server.mcpb

Frequently asked questions

What is RASON?

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

How do I install RASON?

It runs on your machine. In Claude Code: claude mcp add rason -e 'RASON_BEARER_TOKEN=<your rason_bearer_token>' -e 'RASON_SERVER_URL=https://rason.net' -e 'RASON_RESULT_ARRAY_LIMIT=25' -e 'RASON_RESULT_SIZE_LIMIT=50000' -e 'RASON_REQUEST_TIMEOUT=300000' -- npx -y @frontlinesystems/rason-mcp-server@2026.5.5. For other clients, paste the JSON configuration from this page into their MCP settings.

Does RASON need an API key?

Yes. It expects RASON_BEARER_TOKEN, which you set in its configuration.

Who maintains RASON?

It is published by FrontlineSystems. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.