T3Code: a better interface for terminal coding agents

Melvin Vivas · X post · 2026-09-15 · Open on X

Topics: AI Dev Tools & Productivity · Level: beginner

Summary

The creator recommends installing T3Code if you use coding agents in the terminal. He says its interface is much nicer and that it works with Codex, Claude Code, Grok and OpenCode.

Key points

• T3Code is an interface for running coding agents, an alternative to using them straight in the terminal
• Works with Codex, Claude Code, Grok and OpenCode
• The creator says its user experience changed his mind about his terminal-based workflow

Resources mentioned

• T3 Code · tool · x.com · free
  An AI coding tool that you can now use by signing in with one or more ChatGPT accounts.
  Also in: T3 Code Adds Sign in with ChatGPT, With Support for Multiple Accounts (Melvin Vivas on X · notes), OpenAI DevDay recap: Dots, GPT-6.1 Sol, Codex Cloud, Agents API (Melvin Vivas on X · notes), T3 Code: An Agent App Praised for Its UX (Melvin Vivas on X · notes), T3 Code Opens Your Project in Any Installed IDE (Melvin Vivas on X · notes) and 2 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
• Claude Code · tool · code.claude.com · paid · recommended by both Bashiri Smith & Melvin Vivas
  Build agents and pipelines from the terminal; the guide's main agentic coding tool.
  Also in: Create Claude Code Plugins with /plugin-authoring (Melvin Vivas on X · notes), Claude Code mods: customize behavior and UI with plugins (Melvin Vivas on X · notes), AI Engineer Roadmap Overview: From ML Foundations to RAG, Agents & Ops (Bashiri Smith on Facebook · notes), SkillsBento: Free Plugin Marketplace for Codex and Claude Code (Melvin Vivas on X · notes) and 101 more
• Grok · tool · x.com · free
  xAI's AI assistant. Here it is used as a terminal coding agent that also runs with the 'agent' alias.
  Also in: OpenAI Dots: Agents Inside ChatGPT That Debug, Fix, and Open PRs (Melvin Vivas on X · notes), Grok Team Bots: Shared AI Teammates in Slack and Grok (Melvin Vivas on X · notes), Cue by Manus: A New Rival to the Grok Bot on X (Melvin Vivas on X · notes), How to Grow an X (Twitter) Account: 9 Practical Tips from Melvin Vivas (Melvin Vivas on X · notes) and 14 more
• OpenCode · tool · x.com · free
  Open-source terminal coding agent that can be configured with different model providers, including open models.
  Also in: OpenCode Go: Open Coding Models (DeepSeek, Qwen, Kimi, GLM) for $10/mo (Melvin Vivas on X · notes), Trying OpenCode Go After Upgrading OpenCode (Melvin Vivas on X · notes), Orchestrator + Subagents in opencode with Open Models (Melvin Vivas on X · notes), Try Muse Spark 1.3 for Free in OpenCode (Melvin Vivas on X · notes) and 10 more

Try this

• Install T3Code and use it with the coding agent you already use (Codex, Claude Code, Grok or OpenCode)