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1. Open the Add custom connector dialog ↗, prefilled. Or go to Customize → Connectors → + Add → Add custom connector.
2. Name it Real World MCP, paste this URL, pick No sign in, then Add.

https://www.realworldmcp.com/api/mcp

1. On ChatGPT on the web, open Plugins, click +, then Add custom MCP server.
2. Name it, paste this URL under Connection, and pick No authentication.
3. Accept the warning, click Create as a plugin, then install it.

https://www.realworldmcp.com/api/mcp

Run once in your terminal, then type /mcp in Claude Code to see the tools.

claude mcp add --transport http realworldmcp https://www.realworldmcp.com/api/mcp

Run this once, or add the two lines below to ~/.codex/config.toml.

codex mcp add realworldmcp --url https://www.realworldmcp.com/api/mcp

Gemini app: on gemini.google.com, Settings → Connected Apps, then under Custom apps paste this URL and click Next.

https://www.realworldmcp.com/api/mcp

Gemini CLI:

gemini mcp add --transport http --scope user realworldmcp https://www.realworldmcp.com/api/mcp

Add to Cursor opens Cursor with the server filled in. Or add this to ~/.cursor/mcp.json.

{
  "mcpServers": {
    "realworldmcp": {
      "url": "https://www.realworldmcp.com/api/mcp"
    }
  }
}

Run this once (macOS or Linux shell), or add the server to .vscode/mcp.json. Then use it from Copilot Chat in agent mode.

code --add-mcp '{"name":"realworldmcp","type":"http","url":"https://www.realworldmcp.com/api/mcp"}'

In Cascade's MCP menu, choose Open MCP config file and add this server. Then press refresh.

{
  "mcpServers": {
    "realworldmcp": {
      "serverUrl": "https://www.realworldmcp.com/api/mcp"
    }
  }
}

Any client that speaks Streamable HTTP MCP. No auth. Most take this JSON, or just the URL.

{
  "mcpServers": {
    "realworldmcp": {
      "url": "https://www.realworldmcp.com/api/mcp"
    }
  }
}