# Vercel releases durable-harness to keep coding agents running after crashes

> Vercel open‑sources durable-harness, a package that logs model and tool calls so sessions with Pi, OpenCode, Claude Code and Codex can resume after crashes or redeploys.

Oossa · 2026-10-21 · https://oossa.com/en/vercel-releases-durable-harness-to-keep-coding-agents-running-after-crashes

Vercel has made an open‑source package called durable-harness. The tool records every call to an AI model or external tool. If a session using Pi, OpenCode, Claude Code or Codex crashes, times out, or is redeployed on Vercel, Postgres, or a local laptop, the session can pick up where it left off. The package is available now on Vercel’s public repository.

## The facts

- Durable-harness logs all model and tool calls for crash‑proof sessions
- Supports Pi, OpenCode, Claude Code, and Codex agents

## Why it matters

Developers can avoid losing work when their AI‑assisted coding environment crashes, saving time and reducing frustration.

## Sources & references

1. [Vercel Open-Sources durable-harness for Crash-Proof Coding Agents](https://www.marktechpost.com/2026/10/21/vercel-durable-harness-crash-proof-coding-agents/) – MarkTechPost, 2026-10-21

Last updated: 2026-10-21