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title: "PTC-Runner Blog"
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# PTC-Runner Blog

- **[Why I Built a Lisp for AI Agents](./why-i-built-a-lisp-for-ai-agents.html)**
  *PTC-Lisp: a sandboxed language for programmatic tool calling on the BEAM* — March 2026

- **[Stop Feeding Data to Your LLM. Let It Write Programs Instead.](./stop-feeding-data-to-your-llm.html)**
  *Introducing ptc_runner: an Elixir library for Programmatic Tool Calling* — March 2026
