# enable New Possibilities: Building with the Claude Agent SDK

The Claude Agent SDK put something genuinely new on the table for builders: an agent loop that reads a real filesystem, runs real commands, and edits real files — not just a chat box. That's the enable, and it's a real one. This post is what you can actually build with it from a builder's seat, and what the repo the agent lands in has to look like for the loop to be worth running.

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*This is an excerpt. Read the full post at [otf-kit.dev/blog/claude-code-agent-sdk](https://otf-kit.dev/blog/claude-code-agent-sdk) — full-stack kits your AI coding agent can actually ship to production. [Browse the kits →](https://otf-kit.dev)*