Swarm At

Swarm At is a remote MCP server reached over the older SSE transport, at https://api.swarm.at. Clients that support remote servers generally still accept SSE endpoints, though the protocol now favours Streamable HTTP.

No headers are declared in the registry entry. If the server needs you to sign in, a client that supports MCP authorization opens the service's own sign-in page when it first connects.

It can also run locally from a Python package published to PyPI: swarm-at-sdk version 0.7.1. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Python; clients usually start it with uvx (from uv) or after pip install - the usual command is uvx swarm-at-sdk. It reads these environment variables: SWARM_API_URL and SWARM_API_KEY (secret); set them in the client's configuration for this server.

In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):

{
  "mcpServers": {
    "swarm-at": {
      "command": "uvx",
      "args": [
        "swarm-at-sdk"
      ],
      "env": {
        "SWARM_API_URL": "<value>",
        "SWARM_API_KEY": "<secret>"
      }
    }
  }
}

Derived from the registry entry; the live check above only shows whether the endpoint answered. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect