xAI just added T3 Code to its growing list of third-party coding tools that accept SuperGrok and X Premium+ subscriptions directly. No API key required. You log in once via OAuth, and your existing subscription quota powers the agent.
What T3 Code actually is
T3 Code is a free, open-source desktop application that provides a unified interface for AI coding agents like Codex and Claude Code. It adds Git worktree integration, one-click pull request workflows, a diff viewer, and custom actions on top of a bring-your-own-key model. The project was built by Theo and the T3 team, and it is a minimal web GUI for coding agents, currently supporting Codex, Claude, Cursor, and OpenCode.
The core idea is to solve a real friction point: developers working with multiple AI agents constantly context-switch between tools, losing thread history and project state. T3 Code sits in the middle of that fragmentation, letting you swap the underlying model from a single dropdown while keeping everything else intact.
The OAuth trick that makes this work
The integration uses the same OAuth flow xAI has been rolling out across its partner ecosystem. Hermes Agent supports xAI Grok through a browser-based OAuth login flow against accounts.x.ai
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