Advertise
MCP.so
Sign In

Superargs MCP Server

@supercorp-ai

Repository

Basic information

Category

Other

License

MIT

Transports

stdio

Author

supercorp-ai

About Superargs MCP Server

Provide AI MCP server args during runtime.

Superargs MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "superargs": {
      "command": "npx",
      "args": [
        "-y",
        "superargs",
        "--stdio",
        "npx -y @modelcontextprotocol/server-postgres {{databaseUrl}}"
      ]
    }
  }
}

Superargs MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

Fetch the live tool list by running this server in a temporary sandbox using the button above.

Overview

What is Superargs?

Superargs is a middleware wrapper for MCP servers that allows setting up MCP server arguments during runtime instead of during initial setup. It acts as a proxy that forwards all MCP requests (tools, prompts, resources, messages, roots) to a child server and introduces an additional tool to manage those arguments. It is supported by Superinterface, Supermachine, and Supercorp.

How to use Superargs?

Run Superargs via npx with the --stdio flag and a shell command containing placeholders in the form {{argName}}. For example: npx -y superargs --stdio "npx -y @modelcontextprotocol/server-postgres {{databaseUrl}}". Optionally set a custom tool name with --update-args-tool-name. At start, if the underlying server can run without arguments, it will provide its tools plus an update_args tool; if it requires arguments to start, only the update_args tool is available until arguments are provided.

Key features of Superargs

  • Dynamic arg injection: replace placeholders with runtime values
  • Customizable tool name via --update-args-tool-name
  • Forwards all MCP requests to the child server
  • Sends change notifications when args are updated

Use cases of Superargs

  • Provide authentication tokens to a GitHub MCP server on the fly
  • Supply database connection strings to a PostgreSQL MCP server during a chat session
  • Let end users configure a SQLite database path without admin pre‑configuration
  • Securely pass CLI arguments to any stdio MCP server at runtime

Frequently asked questions

1

What does Superargs do?

Superargs lets you provide arguments (like tokens or file paths) to any MCP server during your interaction with an AI assistant, instead of during initial server setup.

2

How do I run Superargs?

Use the command `npx -y superargs --stdio "your_mcp_command_with_{{args}}"`. The `{{argName}}` placeholders are replaced at runtime using the `update_args` tool.

3

What happens if the MCP server requires arguments to start?

If the server requires arguments to start, it will not start until the arguments are set. Until then, only the `update_args` tool is available; all other MCP functions return empty results or error messages.

4

How are sensitive arguments handled?

Arguments are passed to the child MCP server in the command string; nothing is stored by Superargs. To prevent the LLM from seeing the arguments, make a direct call to the MCP server through your own code rather than letting the assistant call the tool.

5

Can I rename the update_args tool?

Yes, use the optional flag `--update-args-tool-name` to set a custom name. The default name is `update_args`.

Comments

More Other MCP servers

EverArt

modelcontextprotocol

Model Context Protocol Servers

88.1K

Soar Flight Booking MCP

Soar Flight Booking MCP is a remote MCP server available at https://mcp.soar.flights.

YOUB

Connect your AI assistant to your own YOUB endurance training account. Read recorded activities with full analysis, planned sessions, race goals, wellness (HRV, sleep, resting HR) and your athletic profile. Create or mov

Senso MCP for Joomla

sensomedia

Senso MCP turns a Joomla 5 or 6 site into a remote MCP server. It runs inside Joomla itself (no extra server, no Node.js bridge) and is secured with OAuth 2.1 and Joomla's own ACL. The free pack lets an AI assistant crea

Blender

ahujasid

Open-source MCP to use Blender with any LLM

23.6K
Advertise