Before you begin
Install Hermes Agent CLI, create a key on the API Keys page, and choose a model on the Models page.1
Set your API key
Add your key to
~/.hermes/.env:Hermes API key configuration
Hermes API key configuration
~/.hermes/.env
2
Configure LithosAI
The configuration uses
To add another model or tier, copy the entry under
deepseek-ai/DeepSeek-V4.1-Flash as an example.Merge into ~/.hermes/config.yaml, keeping existing providers. Set
context_length to match your model, with a minimum of
64,000 tokens.Hermes configuration
Hermes configuration
~/.hermes/config.yaml
providers.lithosai.models.
Use its ID from the model catalog as the new key,
and set context_length to match the model. Reopen Hermes to load the changes.3
Start a conversation
Run
hermes to start a conversation.Model and reasoning effort
- Model and tier: Use
/modelto switch in the current conversation. - Reasoning effort: Use
/reasoningto select low, high, or max. The default is high.