Handing off an unfinished Codex session to Grok Build

Melvin Vivas · X post · 2026-08-16 · Open on X

Topics: AI Dev Tools & Productivity, Prompt & Context Engineering · Level: intermediate

Summary

The creator explains his workaround after hitting Codex limits. He asked Grok Build to load the unfinished Codex session and complete the task, moving work from one coding agent to another.

Key points

• When one coding agent hits its usage limit partway through a task, another agent can pick up the work.
• Grok Build was asked to load the existing Codex session and finish the job.
• Keeping session and context files means a task isn't stuck with a single tool.

Resources mentioned

• Grok Build · tool · x.ai · free
  xAI's agentic coding CLI; data sharing is on by default and can be turned off with /privacy.
  Also in: Setting up Grok Bot for coding with Grok Build and Cursor CLI (Melvin Vivas on X · notes), Reusable GPU devbox: PyTorch/CUDA plus six coding agents (Melvin Vivas on X · notes), Grok Build finishes a task Codex left hanging (Melvin Vivas on X · notes), Grok Build praised as a smooth, fast CLI coding tool (Melvin Vivas on X · notes) and 10 more
• OpenAI Codex · tool · openai.com · paid
  OpenAI's coding agent. In the diagram it writes code, fixes review findings and drives the build loop. The creator also used it to make this video.
  Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Sign in with ChatGPT: Setting Usage Limits for Each App (Melvin Vivas on X · notes), Codex Cloud Environments Must Be Saved & Published Before Use (Melvin Vivas on X · notes) and 240 more

Try this

• If a coding agent stops partway through, point a second agent at its saved session so it can finish the task.