Vercel Open-Sources durable-harness for Crash-Proof Coding Agents
Vercel has released durable-harness, an open-source package that keeps coding agent sessions alive through crashes and timeouts.

Proof1 independent outlet
Key points
- Vercel durable-harness wraps existing harnesses, including Pi, OpenCode, Claude Code and Codex, without changing them.
- Each session lives in a durable log.
- Runs on: Vercel Functions plus Vercel Queues, Node.js 22+ with Postgres, or laptop files.
- durable-harness is a set of adapters from Vercel that store a harness session in a Workflow SDK World.
Sources (1)
- [1]Vercel Open-Sources durable-harness for Crash-Proof Coding AgentsMarkTechPost · Oct 21, 10:15 PM
Vercel has released durable-harness, an open-source package that keeps coding agent sessions alive through crashes and timeouts.
Vercel durable-harness wraps existing harnesses, including Pi, OpenCode, Claude Code and Codex, without changing them.
Extractive summary: sentences quoted from the sources.
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