Backend API

Q: What is a Claude Code skill and how does the Backend API skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Backend API is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Security · Sub-category: web-security · Last updated: 2026-08-02

Design and implement RESTful API endpoints with proper HTTP methods, status codes, and consistent naming conventions. Use this skill when creating or modifying API routes, endpoints, or server-side request handlers. When working on files in src/pages/api/, files containing API route definitions, files implementing REST endpoints, files handling HTTP requests and responses, server middleware for API requests, API authentication and authorization logic, and files defining API versioning strategies. When designing URL structures for resources, implementing query parameter handling for filtering/sorting/pagination, setting up rate limiting for API endpoints, or configuring CORS and API security headers.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

This Skill provides Claude Code with specific guidance on how to adhere to coding standards as they relate to how it should handle backend API.

What this skill does

Backend API is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/backend-api-spaceplushy-portfolio-3/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Backend API Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 174,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/backend-api-spaceplushy-portfolio-3
curl -L https://claudskills.com/skills/backend-api-spaceplushy-portfolio-3/SKILL.md \
  -o ~/.claude/skills/backend-api-spaceplushy-portfolio-3/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/backend-api-spaceplushy-portfolio-3/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/backend-api-spaceplushy-portfolio-3/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\backend-api-spaceplushy-portfolio-3\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

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.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Backend API Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/backend-api-spaceplushy-portfolio-3/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Backend API skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Backend API skill?

Use Backend API when your Claude Code task falls under the Security category — specifically in the web security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Backend API" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the Backend API skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Backend API is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/api/backend-api-spaceplushy-portfolio-3/SKILL.md
License: MIT
Author: majiayu000
Website: https://majiayu000.github.io/claude-skill-registry/

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

majiayu000. (2026). Backend API [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/backend-api-spaceplushy-portfolio-3/

BibTeX

@misc{backend-api-spaceplushy-portfolio-3-2026,
  author    = {majiayu000},
  title     = {Backend API [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/backend-api-spaceplushy-portfolio-3/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/backend-api-spaceplushy-portfolio-3.svg)](https://claudskills.com/skills/backend-api-spaceplushy-portfolio-3/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-08-02 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (filesystem), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
⚠ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/backend-api-spaceplushy-portfolio-3/#security)

More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills

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

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