Agent Zero is one of the most popular open-source AI agent frameworks, with a rapidly growing community building autonomous coding and research agents. Agent Zero supports the SKILL.md format, which means you can install the same skills that work across Claude Code, Cursor, Codex CLI, and 20+ other agents. Here's how to set it up. > Quick Answer: Agent Zero reads SKILL.md files from its skills directory (typically `skills/` in your Agent Zero project folder). Drop a skill folder containing a SKILL.md file into the directory and Agent Zero loads it on the next run. The same skills that work in Claude Code and Cursor work in Agent Zero without modification.
What is Agent Zero?
Agent Zero is an open-source framework for building autonomous AI agents. Unlike Claude Code or Cursor which are commercial products with built-in editors, Agent Zero is a framework you run locally that gives an LLM the ability to execute code, browse the web, manage files, and chain tasks together autonomously. It's popular with developers who want full control over their agent's behavior and architecture. The framework supports multiple LLM backends (OpenAI, Anthropic, local models) and has a modular architecture where capabilities are added through extensions and skills. SKILL.md support was added as part of this extensibility model.Where do SKILL.md files go in Agent Zero?
Agent Zero looks for skills in the `skills/` directory within your project folder. Each skill lives in its own subfolder with a SKILL.md file at the root. ``` agent-zero/ ├── skills/ │ ├── code-reviewer/ │ │ ├── SKILL.md │ │ └── references/ │ │ └── patterns.md │ └── test-generator/ │ └── SKILL.md ├── main.py └── config.yaml ``` If the `skills/` directory doesn't exist, create it. Agent Zero scans it on startup and loads every valid SKILL.md it finds.How do I install a skill?
Download the skill from Agensi or GitHub. Extract the zip into your Agent Zero `skills/` directory. Verify the folder structure is correct: SKILL.md should be at the root of the skill folder, not nested inside an extra directory. ```bash cd your-agent-zero-project/skillsDownload and extract
unzip code-reviewer.zipVerify
ls code-reviewer/SKILL.md ``` Restart Agent Zero or reload the agent to pick up the new skill. Agent Zero reads skill descriptions and activates the matching skill based on what you ask it to do.How does Agent Zero pick which skill to use?
Agent Zero reads the `description` field in each skill's YAML frontmatter. When you give the agent a task, it matches your request against all available skill descriptions and loads the most relevant one. For example, if you have a skill with: ```yaml --- name: code-reviewer description: Use when the user asks to review code, find bugs, or check for security issues. --- ``` And you ask Agent Zero "review this file for security issues," it loads the code-reviewer skill and follows its instructions. Writing clear, trigger-based descriptions with multiple phrasings helps Agent Zero pick the right skill consistently. For guidance on this, read How to Write a SKILL.md Description That Triggers.Do skills from other agents work in Agent Zero?
Yes. The SKILL.md format is agent-agnostic by design. A skill built for Claude Code works in Agent Zero without modification because the instructions are plain English markdown. The agent reads the instructions and follows them regardless of which LLM backend is powering it. Some agent-specific metadata fields in the YAML frontmatter (like Claude Code's `context: fork` or Cursor's `globs`) are ignored by Agent Zero, but the core instructions and any supporting files (references, scripts, examples) work as expected.Agent Zero vs Claude Code for SKILL.md skills
The main difference is the execution environment. Claude Code runs in a sandboxed terminal with built-in safety constraints. Agent Zero runs locally with whatever permissions you give it, which means it can execute more powerful workflows but also requires more care about which skills you install. This makes security scanning more important for Agent Zero skills. A skill with a hidden command that deletes files is dangerous in any agent, but especially dangerous in Agent Zero where there may be fewer guardrails. Only install skills from trusted sources that have been reviewed. Every skill on the Agensi marketplace passes an 8-point security scan that checks for prompt injection, data exfiltration, dangerous commands, and other threats. This is particularly valuable for Agent Zero users who want skills they can trust.What types of skills work best with Agent Zero?
Agent Zero's strength is autonomous multi-step workflows. Skills that break complex tasks into structured steps work particularly well because they give the agent a clear plan to follow. Research and analysis skills that instruct the agent to gather information from multiple sources, synthesize findings, and produce structured reports leverage Agent Zero's web browsing and file management capabilities. DevOps and automation skills that chain multiple commands together (check environment, validate config, run tests, deploy) work well because Agent Zero can execute the full pipeline autonomously. Code generation skills that follow a specific methodology (read requirements, plan architecture, implement, test, refactor) give Agent Zero a structured workflow to follow instead of generating code in one shot. For a full list of agents that support SKILL.md, read Every AI Agent That Supports SKILL.md in 2026. --- *Browse skills for Agent Zero and every other agent at agensi.io/skills.*Frequently Asked Questions
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