Introducing Custom Agents

The paradigm of software engineering is shifting from writing code to Agent Orchestration. The core idea is to maximize productivity by delegating complex projects to specialized agents.

Existing general-purpose coding assistants had limitations, including a lack of specialization that required explaining project-specific rules every time, and Context Window Bloat caused by loading all extensive guidelines.

Custom Agents address this through file-based configurations that define specific roles, tools, and constraints. This keeps the context clean, minimizes token costs, and provides predictable partners optimized for specific tasks.

The differences from existing features are as follows:

• Skills: Provide additional context and instructions to agents to enhance specialization.
• Dynamic Subagents: The main agent delegates tasks to prevent context pollution.
• Custom Agents: Allow complete customization of core parts of the agent loop, including models, permissions, and default tools.

This is now available in Antigravity 2.0 and the CLI. Custom Agents are written in Markdown file format with YAML front matter and stored in the project's .agents/agents/ directory, allowing immediate sharing of workflows with team members.