Set your Pioneer API key as an environment variable
export PIONEER_API_KEY="<Your Pioneer API key>"
In the terminal point Hermes to Pioneer by pasting the following:
hermes config set model.provider customhermes config set model.default claude-opus-4-8hermes config set model.base_url https://api.pioneer.ai/v1hermes config set model.key_env PIONEER_API_KEY
Start Hermes
hermes
Switch between Pioneer models with /model command.