Developer Tools & Fine-Tuning

The model is only half the equation — the AI developer tools around it decide how much leverage you actually get. This hub covers the terminal agents, CLI workflows, and integrations that turn a language model into a working engineer: installation, configuration, customization, and the errors in between.
Choose your terminal agent
The terminal is where AI coding agents live now. OpenCode vs Claude Code compares the multi-provider open-source option against Anthropic’s native ecosystem, and Gemini CLI vs Claude Code weighs Google’s generous free tier against Claude’s agentic depth. Start with installing the Claude CLI on macOS, Linux, or Windows if you are new to the stack.
Master the configuration layer
Default setups waste most of what these tools can do. Our Claude Code skills guide covers CLAUDE.md memory files, hooks, and persistent context, while the claude mcp list command guide shows how to wire in MCP servers for databases and external tools.
When things break
API errors are part of life with any hosted agent. The Claude Code API error 500 troubleshooting guide separates server-side failures from local misconfigurations so you know when to fix and when to wait.