Pi Durable

Earendil has introduced a new package called Pi Durable, designed for long-running, durable, and adaptable agents that can run anywhere. Pi Durable is a framework for building agentic applications, including coding agents, without disrupting the existing Pi coding agent. It shares code and principles with Pi, such as minimalism and malleability.

Pi Durable allows for infinitely long conversations, survival of catastrophic failures, and multiple humans steering the same agents. A harness in Pi Durable is storage plus machinery for running conversations with large language models in parallel, providing tools and execution environments for those models. It supports memory, SQLite, and JSONL storage, with adapters for other backends.

Pi Durable ensures that agents can run for extended periods and survive process deaths, resuming from the last checkpoint. It also includes tools for creating subagents that continue from where they left off. The harness can run many conversations concurrently without one blocking another, with each conversation seeing the parent's history up to that point.