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AI Coding Agents for Solo Founders

Compare the best AI coding agents and harnesses: terminal CLIs, IDE extensions, desktop apps, and cloud async agents. Find the right coding assistant with BYOK, MCP support, and agent skills compatibility.

Terminal CLIIDE ExtensionDesktop AppMCP SupportAgent SkillsBYOK
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AI Coding Agents
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Support MCP Servers
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Antigravity CLI
Google's terminal agent: the TUI surface of Antigravity, and the successor to Gemini CLI for consumer plans.

Antigravity CLI (command agy) is the terminal user interface of Google Antigravity. It shares the agent harness and settings with the Antigravity 2.0 desktop app, edits files and runs commands with your permission, supports subagents, MCP, skills, plugins and hooks, and works over SSH and headless. Since June 18, 2026 it replaces Gemini CLI for free, Google AI Pro and Ultra users, with a one-time import of Gemini CLI extensions and settings.

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What is an AI Coding Agent?

AI coding agents (also called AI coding harnesses) are tools that use large language models to help you write, debug, and maintain code. They range from terminal CLI tools to full desktop applications, and can work with your codebase, run commands, and integrate with your development workflow.

Key Features to Compare

  • Surface: CLI, IDE extension, desktop app, web, or cloud async agent
  • BYOK (Bring Your Own Key): Use your own API keys for model providers
  • MCP Support: Works with Model Context Protocol servers for extended capabilities
  • Agent Skills: Supports custom skills and plugins
  • Model Support: Which LLMs and providers are supported
  • Open Source: Whether the tool is open source and self-hostable

Popular Choices for Solo Founders

Claude Code integrates deeply with Anthropic's Claude models and runs in terminal, VS Code, JetBrains, desktop, and browser. Cursor is a VS Code fork with native AI features and multi-model support. Aider is a powerful CLI tool that works with any editor and supports many providers.

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