API Spectral

Quality score: 70/100 · Category: Security · Sub-category: web-security

API specification linting and security validation using Stoplight's Spectral with support for OpenAPI, AsyncAPI, and Arazzo specifications. Validates API definitions against security best practices, OWASP API Security Top 10, and custom organizational standards. Use when: (1) Validating OpenAPI/AsyncAPI specifications for security issues and design flaws, (2) Enforcing API design standards and governance policies across API portfolios, (3) Creating custom security rules for API specifications in CI/CD pipelines, (4) Detecting authentication, authorization, and data exposure issues in API definitions, (5) Ensuring API specifications comply with organizational security standards and regulatory requirements.

What this skill does

API Spectral is a production-ready Claude Code skill (quality score 70/100) in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/api-spectral/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when: (1) Validating OpenAPI/AsyncAPI specifications for security issues and design flaws, (2) Enforcing API design standards and governance policies across API portfolios, (3) Creating custom security rules for API specifications in CI/CD pipelines, (4) Detecting authentication, authorization, and data exposure issues in API definitions, (5) Ensuring API specifications comply with organizational security standards and regulatory requirements.

Who uses this skill

The API Spectral skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/api-spectral
curl -L https://claudskills.com/skills/api-spectral/SKILL.md \
  -o ~/.claude/skills/api-spectral/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/api-spectral/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/api-spectral/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\api-spectral\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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Part of ClaudSkills — the open registry for Claude Code skills. · What's New · Install guide · About · llms.txt

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