Grok Build Skills: How to Install and Use SKILL.md with xAI's Agent

Grok Build is xAI's entry into the coding agent market. It joins Claude Code, Codex, Cursor, Kiro, and about 20 other tools that now support the SKILL.md open standard for agent skills.

The short version: Grok Build reads SKILL.md files the same way Claude Code and Codex do. Drop a skill into the right directory and Grok Build picks it up on the next session. The skill format is portable across agents.

Quick Answer: Grok Build supports SKILL.md skills. Install them in your project's .grok/skills/ directory or globally in ~/.grok/skills/. The same skills that work in Claude Code and Codex work in Grok Build.

Setting up skills in Grok Build

Grok Build looks for skills in two locations:

Project-level skills go in your repository root:

your-project/.grok/skills/skill-name/SKILL.md

Global skills available across all projects:

~/.grok/skills/skill-name/SKILL.md

Each skill lives in its own folder containing a SKILL.md file and optionally supporting files like scripts, templates, or reference docs.

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Browse all Grok Build skills

Installing skills from Agensi

The fastest way to get started:

1. Browse skills at agensi.io/skills
2. Download the SKILL.md file
3. Create a folder in your skills directory: ~/.grok/skills/code-reviewer/
4. Drop the SKILL.md file in that folder
5. Start a new Grok Build session

Grok Build loads skills at session start. If you add a skill mid-session, start a new one to pick it up.

Best skills for Grok Build

Grok Build benefits from the same skills as other terminal-based agents. The best starting point:

Code Reviewer for automated PR analysis. Testing skills for your framework (Jest, Pytest, Vitest). Git Commit Writer for consistent conventional commits. Security audit skills for catching vulnerabilities before they ship.

Since Grok Build is newer, its default behaviors are less refined than Claude Code's. Skills help fill the gaps by providing the procedural knowledge that more mature agents have built into their harness.

How Grok Build compares for skills

Claude Code has the deepest skill integration with hooks, agent teams, and dynamic workflows. Codex has skills, plugins, and subagents. Grok Build's skill support is simpler but functional. It reads the SKILL.md, applies the instructions, and follows the procedures.

The advantage of the SKILL.md open standard is that you don't have to choose. The same skill file works in all of them. Install once, use everywhere.

Browse all Grok Build compatible skills at agensi.io/skills.

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Related: Every AI Agent That Supports SKILL.md in 2026 and Best Claude Code Skills 2026.