System Prompt

Domain: Development & Contributing

Motivation

The initial instruction sent to the LLM. Defines Hermes behavior, available tools, and context. Built by the prompt builder.

Concrete Example

System prompt: You are Hermes Agent, an intelligent AI assistant… Available tools: terminal, read_file, web_search… User preferences: concise responses… The LLM uses this to guide its behavior.

Analogy

A job description for a new employee - it explains their role, tools, and expectations. The system prompt is Hermes job description for the LLM.