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Hermes

Adapter for Nous Research's Hermes agent CLI.

Install​

amux install hermes

Supported on macOS, Linux and Windows.

Auth​

Hermes is multi-provider; the adapter accepts any of:

  • OPENROUTER_API_KEY
  • ANTHROPIC_API_KEY
  • OPENAI_API_KEY
  • NOUS_API_KEY
  • GOOGLE_API_KEY
  • GITHUB_TOKEN

Config file (YAML): ~/.hermes/cli-config.yaml.

Minimal run​

amux run hermes --prompt "Summarize the latest commits"

Notable flags​

  • --model <id> — default hermes-3-llama-3.1-405b.
  • --prompt <text> — forwarded prompt.
  • --auto-approve — emitted when approvalMode: 'yolo'.

Session files​

  • Location: ~/.hermes/sessions/*.jsonl
  • JSONL; standard parser.

Plugins​

Plugin support: no. Use MCP servers for extensibility.

MCP Servers​

amux mcp install hermes <mcp-server>
amux mcp list hermes

Registry: https://modelcontextprotocol.io

Capabilities​

Tool calling with parallel calls, tool-call streaming, text streaming, 128k context.

Known limitations​

  • No thinking / reasoning streaming.
  • No JSON mode or structured output.
  • No image or file input.
  • Config is YAML and global-only.
  • Plugin install/list/uninstall via amux plugin is not supported.