Gemini CLI - AI agent with GEMINI.md system prompt loading Context Engineering - System prompts

A terminal-based AI agent that automates context engineering by loading hierarchical GEMINI.md system prompts for project-aware development.

Gemini CLI transforms your terminal into a high-fidelity agentic environment by automating context engineering through a hierarchical loading system. It aggregates instructions from GEMINI.md files across multiple levels: starting with global defaults in ~/.gemini/GEMINI.md and layering in project-specific rules from your workspace. This architecture allows the agent to inherit your coding standards and architectural patterns without manual prompt repetition (saving both time and token overhead). With a 1M-token context window and native tool access for shell execution or file manipulation: you can manage complex refactors or repo-wide audits using the /memory show and /memory refresh commands to keep the AI perfectly aligned with your local environment.

https://github.com/google-gemini/gemini-cli