Grok Build finishes a task Codex left hanging

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

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

Summary

After Codex ran out of limits, the creator asked Grok Build to load the Codex session and finish the job, and it worked. It shows that coding agents can pick up each other's work.

Key points

• Grok Build was able to read and continue an existing Codex session.
• This is a practical fallback when one agent's usage limit blocks your work.
• Context and session state can be moved between coding tools.

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), Handing off an unfinished Codex session to Grok Build (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

• Ask a second coding agent to load the previous agent's session and finish the task.