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Guillermo Rauch@rauchg
Harness durability in fx.sh . The same 𝚌𝚛𝚎𝚊𝚝𝚎𝙵𝚡𝙰𝚐𝚎𝚗𝚝() is now *durable* on your laptop or in the cloud, via files, Postgres, or Vercel Workflows. Node.js or Bun. Agents need long-running compute. But they also need to tolerate restarts, redeploys, timeouts, crashes… Concretely, if a user sends a prompt and then throws their phone into a black hole, we ensure that turn runs to completion. If the process crashes mid-tool-call, it resumes from there. To this end, 𝚕𝚒𝚋𝚏𝚡 introduces a simple durability adapter API. On Vercel, it leverages all the infra we built for durable workflows and queues, giving you reliability with 1LOC. This is a critical aspect of production-grade agents (and something all @eve agents also get out of the box). Next, we'll show you how we bring the same durability to Pi, OpenCode, and even your own custom harnesses. Pranit @fazxes fx v0.0.14 libfx is now durable out of the box. Same API on local, Vercel and DIY. - Sessions survive crashes, redeploys & timeouts - Power cloud agents with ChatGPT & Grok subscriptions - Custom providers & local model support in libfx - Run multiple libfx agents in one app - More control over each libfx session - TypeScript types for libfx's public APIs - Ported to Zig 0.17 - Multiple bug fixes & security improvements fx.sh/changelog#v0.0… 🔗 View on Twitter 🔗 View Quoted Tweet
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2111215808781394329
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---
tweet_id: "2111215808781394329"
author: "rauchg"
published_at: "2026-10-16T22:00:47+00:00"
source_url: "https://x.com/rauchg/status/2111215808781394329"
---

Harness durability in [fx.sh](http://fx.sh).  
  
The same 𝚌𝚛𝚎𝚊𝚝𝚎𝙵𝚡𝙰𝚐𝚎𝚗𝚝() is now \*durable\* on your laptop or in the cloud, via files, Postgres, or Vercel Workflows. Node.js or Bun.  
  
Agents need long-running compute. But they also need to tolerate restarts, redeploys, timeouts, crashes…  
  
Concretely, if a user sends a prompt and then throws their phone into a black hole, we ensure that turn runs to completion. If the process crashes mid-tool-call, it resumes from there.  
  
To this end, 𝚕𝚒𝚋𝚏𝚡 introduces a simple durability adapter API. On Vercel, it leverages all the infra we built for durable workflows and queues, giving you reliability with 1LOC.  
  
This is a critical aspect of production-grade agents (and something all [@eve](https://x.com/eve) agents also get out of the box). Next, we'll show you how we bring the same durability to Pi, OpenCode, and even your own custom harnesses.

![Pranit](https://pbs.twimg.com/profile_images/2086719570862034944/4TvSh04K_normal.jpg)

Pranit@fazxes

fx v0.0.14  
  
libfx is now durable out of the box. Same API on local, Vercel and DIY.  
  
- Sessions survive crashes, redeploys & timeouts  
- Power cloud agents with ChatGPT & Grok subscriptions  
- Custom providers & local model support in libfx  
- Run multiple libfx agents in one app  
- More control over each libfx session  
- TypeScript types for libfx's public APIs  
- Ported to Zig 0.17  
- Multiple bug fixes & security improvements  
  
[fx.sh/changelog#v0.0…](https://fx.sh/changelog#v0.0.14)

[🔗 View on Twitter](https://x.com/fazxes/status/2111203466882245119/video/1)

[🔗 View Quoted Tweet](https://x.com/fazxes/status/2111203466882245119)

## 视频地址

- [视频 1](https://video.twimg.com/amplify_video/2111202364048728064/vid/avc1/1920x1080/iDnPSLkyb98aTrix.mp4?tag=29)