Agent Foundry: A Platform for Building and Running Agent Systems

Takeaways

• Agent Foundry grew out of Archipelago, his software engineering system, which is not yet fully autonomous; he pulled the shared machinery out into its own platform.
• You compose structural primitives (loops, sequences, retry) and behavioral primitives, and any slot that takes one primitive takes any other; the primitives wrap LangGraph.
• Agents are Claude Code running headless in containers and share Markdown files in a workspace. Clarification requests rise to the orchestration layer; the responder provider connects the running instance to the outside world over standard I/O.
• Every run writes an artifacts folder, including a lifecycle JSON of agent, function and inference calls with timing, plus each agent's reasoning log, to learn from.
• Archetype, which he plans to open source first, pairs Pydantic with Markdown to validate agent output and put the structure into the instructions. One of his biggest challenges is time.