Pi Durable: Crash Recovery for Always-On Agents with Local Models
ORIGINAL / Pi Durable EXPLAINED: Build Always-On Agents with Local Models
This content introduces Pi Durable as a building block in the Pi ecosystem for always-on agent applications, enabling recovery after interruptions via checkpoints, conversations, and storage, and demonstrates a local llama.cpp demo with Qwen3.5-0.8B.
01 ABSTRACT
Pi Durable is a building block for always-on agent applications, not a new coding-agent CLI, using checkpoints, conversations, and storage to support recovery after interruptions. The demo runs Qwen3.5-0.8B locally with llama.cpp and includes a second script that resumes interrupted work from SQLite. The author notes the APIs are experimental, and tool replay safety and host process restart remain application responsibilities.
02 KEY FINDINGS
- Pi Durable provides checkpoint, conversation, and storage mechanisms for crash recovery of always-on agents.
- The content distinguishes harness versus application responsibilities in the Pi ecosystem and outlines six steps to initialize a harness.
- The local-model demo uses llama.cpp with Qwen3.5-0.8B and includes a second script that resumes interrupted work from SQLite.
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