OpenCode: This CLI Tool Changed Coding Forever! (USE Any Models)

OpenCode: AI Coding Agent for the Terminal - Summary

Key Concepts:

• AI Coding Agent
• Terminal-based coding
• Model selection (Gemini, Grock, etc.)
• File creation and editing
• Code review
• API key integration
• Context management
• Database integration (SQLite)
• Error handling and debugging

Installation and Setup

• OpenCode is installed via a one-line command in the terminal.
• The presenter uses macOS and demonstrates the installation process.
• Before using OpenCode, API keys for desired models (e.g., Gemini, Grock) must be exported as environment variables.
  • export GEMINI_API_KEY=[your_gemini_api_key]
  • export GROCK_API_KEY=[your_grock_api_key]
• Gemini API keys can be generated at studio.google.com.
• Typing opencode in the terminal launches the OpenCode interface.

Interface and Basic Commands

• The interface is navigated using keyboard shortcuts.
• Ctrl + ? displays a popup with a list of available commands.
• Ctrl + U/D scrolls up/down.
• Enter sends a message/command.
• Ctrl + E opens the editor.
• Escape cancels an operation.
• Ctrl + F selects files to upload.
• Ctrl + O allows model selection.

Creating a Finance Tracker Application

• The presenter demonstrates creating a simple finance tracker application using Gemini 2.5 Pro.
• The initial prompt is: "create a finance tracker application with modern look in one file HTML, CSS and JavaScript."
• OpenCode prompts for approval before creating and modifying files.
• The application allows users to add income and expenses and displays the total balance.
• The presenter then asks OpenCode to save the data in a SQLite database.
• This involves creating a Node.js server and API endpoints.
• The commands npm install and npm start are used to run the server.

Debugging and Error Handling

• The initial implementation has an issue where the application tries to access data from a file path instead of the server.
• The presenter copies the error message from the browser console and asks OpenCode to "add the full path localhost to the endpoints."
• A CORS (Cross-Origin Resource Sharing) issue arises, which OpenCode attempts to fix.
• The presenter also asks OpenCode to change the port to 30002 to avoid conflicts.
• After debugging, the finance tracker application successfully stores and retrieves data from the SQLite database.

Model Selection and Integration

• The presenter demonstrates switching to the Grock model for faster inference.
• Ctrl + O is used to open the model selection menu.
• The presenter selects "Grock" as the model.
• The presenter uses Grock to explain the code in the HTML file.
• The command explain is used to get an explanation of the code.

Claudia: A UI for Claude Code

• The presenter mentions Claudia, a user interface for Claude Code, which is also open source and free to use.
• A tutorial for Claudia is available, and the link will be provided.

Conclusion

• OpenCode is a powerful AI coding agent that allows users to create, edit, and review code directly from the terminal.
• It supports multiple AI providers and models, including Gemini and Grock.
• The presenter encourages viewers to try OpenCode and provide feedback.