Best Free SKILL.md Skills for AI Coding Agents (2026)

Not every skill costs money. Many of the most useful SKILL.md skills are free — published by developers who want to share their workflows. Here are the best free skills available right now, all cross-compatible across Claude Code, OpenClaw, Codex CLI, Cursor, and other agents.

Quick Answer: The best free skills in 2026 include code-reviewer, git-commit-writer, env-doctor, readme-generator, and pr-description-writer. All are available on Agensi with security scanning included. Filter by "Free" to browse the full list.

What are the best free code review skills?

The code-reviewer skill is the most-installed free skill on Agensi. It provides structured severity-based code review: scans for bugs, security issues, performance problems, and style violations. Organizes output by file with clear severity ratings (critical, warning, suggestion).

The security-audit skill is also free. It focuses specifically on OWASP Top 10 vulnerabilities, hardcoded secrets, and authentication flaws.

What are the best free git automation skills?

Three free skills cover the most common git workflows:

git-commit-writer reads staged changes and writes conventional commit messages. Detects type (feat, fix, refactor), scope, and breaking changes. Handles multi-file commits.

pr-description-writer generates pull request descriptions from branch diffs. Covers what changed, why, and what to test.

changelog-generator transforms commit history into user-facing release notes grouped by change type.

What are the best free DevOps skills?

The env-doctor skill diagnoses why your project won't start. It checks runtime versions, dependencies, environment variables, database connections, and port conflicts. Free and works across all agents.

What are the best free documentation skills?

The readme-generator skill scans your project structure and generates a complete README with installation instructions, usage examples, configuration reference, and contributing guidelines. It reads your actual code to produce accurate documentation.

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Where do I find free skills?

Agensi marketplace. Filter by "Free" at agensi.io/skills. All free skills are security-scanned with Agensi's 8-point automated scanner.

GitHub. Search filename:SKILL.md to find community-published skills. These aren't security-scanned — review the SKILL.md content before installing.

Build your own. The best free skill is the one you write for your own workflow. It takes 15 minutes to document your conventions in a SKILL.md file. Read How to Create a SKILL.md from Scratch.

How do I install free skills?

Same process for free and paid skills:

# Download from Agensi, then unzip to your agent's directory:
unzip code-reviewer.zip -d ~/.claude/skills/     # Claude Code
unzip code-reviewer.zip -d ~/.openclaw/skills/   # OpenClaw
unzip code-reviewer.zip -d ~/.codex/skills/      # Codex CLI
unzip code-reviewer.zip -d .cursor/skills/        # Cursor

Start a new session. The skill activates automatically when your request matches its description.

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Browse free and paid skills for any AI coding agent on Agensi.