How to use Athanor in Gemini CLI

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

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

Steps

1. In a terminal, run:

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

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

2. Trust the folder you run gemini in: Gemini CLI asks the first time you start it there, or run /trust. Gemini CLI does not load MCP servers in a folder it does not trust.

3. Start gemini again in a trusted folder. Run /mcp to see athanor and its tools.

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

Or edit the configuration file

Add this to ~/.gemini/settings.json:

{
  "mcpServers": {
    "athanor": {
      "httpUrl": "https://mcp-athanor.arbastro.com/mcp"
    }
  }
}

Setup taken from Gemini CLI's MCP documentation.

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