Making every harness durable

Written by AI

TLDR: durable-harness lets Pi, OpenCode, Codex, and Claude Code resume cloud work after crashes, disconnects, and function timeouts.
Best for: Developers running long-lived coding agents in the cloud
The tip: Use the durable log to resume interrupted turns without repeating completed work.
What you need: A coding-agent harness
Vercel or your own Postgres instance
Start here: Choose a harness to run durably
Configure Vercel or your own Postgres instance
Run a task and test recovery after an interruption
Filed note: Vercel's durable-harness lets Pi, OpenCode, Codex, and Claude Code resume long-running work after crashes and function timeouts.

Highlights: With `durable-harness`, a new function reads completed results from the log and resumes the turn.
Interrupted work resumes without replaying finished steps.
If the browser disconnects, the agent keeps running, and reconnecting catches up from the log.
The agent is not tied to an open client connection.
Excerpt: Developers are familiar with running coding agents locally through harnesses like Pi, Claude Code, and others. They are reliable daily drivers for generating code, but keeping agents running around the clock requires your computer to be on and awake, which led to the laptop lid memes and Mac mini demand spike.
From vercel.com