Build Your Own Harness with the Agent SDK

The text discusses two skills, create-agent-tui and create-headless-agent, designed for building custom agent harnesses using the Agent SDK, which is compatible with any model on OpenRouter. The create-agent-tui skill scaffolds a terminal UI with customizable features, while create-headless-agent creates a headless agent for CLI tools and other backend applications, both generating complete TypeScript projects. These tools offer detailed customization options including tool display styles, input styles, loader animations, and ASCII banners, allowing users to tailor their projects to specific needs. The generated projects consist of two layers of code: an inner layer managed by the Agent SDK, which handles the agent loop and tool execution, and an outer layer generated by the skills that includes configuration and session management. The skills utilize established patterns from top production agent architectures and offer features like safe retries on transient API errors and structured output validation. These tools are particularly valuable for those seeking fine-grained control over their agents, integrating minimal harnesses into products, or enhancing their understanding of agent functionality and debugging.

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