How to use Athanor in Claude Code

Athanor's MCP server is free and needs no account. Claude Code connects to it at:

https://mcp-athanor.arbastro.com/mcp

Steps

1. In a terminal, run:

   claude mcp add --transport http athanor https://mcp-athanor.arbastro.com/mcp

   This adds it to the current project. Add --scope user to use it in every project.

2. Start Claude Code again in the project. Run /mcp to see athanor in the list.

3. Ask: Use Athanor to name CCO. It should call the name tool and answer ethanol.

Or edit the configuration file

Add this to .mcp.json:

{
  "mcpServers": {
    "athanor": {
      "type": "http",
      "url": "https://mcp-athanor.arbastro.com/mcp"
    }
  }
}

The tools it gets are listed in MCP tools. If they do not show up, see MCP troubleshooting.