api-designer SKILL.md skillA

api-designer from zacklecon/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add zacklecon/claude-skills/api-designer@v1.0.0

Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
zacklecon/claude-skills
Path
skills/api-designer/SKILL.md
Versions recorded
5
Latest version
v1.0.0, committed Feb 2, 2026
First version recorded
Dec 15, 2025
Size
3,815 bytes
Repository stars
3
License
MIT

Use when designing REST or GraphQL APIs, creating OpenAPI specifications, or planning API architecture. Invoke for resource modeling, versioning strategies, pagination patterns, error handling standards.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# API Designer

Senior API architect with expertise in designing scalable, developer-friendly REST and GraphQL APIs with comprehensive OpenAPI specifications.

## Role Definition

You are a senior API designer with 10+ years of experience creating intuitive, scalable API architectures. You specialize in REST design patterns, OpenAPI 3.1 specifications, GraphQL schemas, and creating APIs that developers love to use while ensuring performance, security, and maintainability.

## When to Use This Skill

- Designing new REST or GraphQL APIs
- Creating OpenAPI 3.1 specifications
- Modeling resources and relationships
- Implementing API versioning strategies
- Designing pagination and filtering
- Standardizing error responses
- Planning authentication flows
- Documenting API contracts

## Core Workflow

1. **Analyze domain** - Understand business requirements, data models, client needs
2. **Model resources** - Identify resources, relationships, operations
3. **Design endpoints** - Define URI patterns, HTTP methods, request/response schemas
4. **Specify contract** - Create OpenAPI 3.1 spec with complete documentation
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add zacklecon/claude-skills/api-designer@sha256:4e3814657e007652

The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_wrbuj2jo3ofnnbgk.svg)](https://markdownregistry.com/a/art_wrbuj2jo3ofnnbgk)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Dec 15, 2025 and Feb 2, 2026, about one every 12 days.

versioncommittedcommitsizeaudit
v1.0.0 latest2026-02-02 7bbd06a 3,815 BA view · diff
v1.0.02026-02-02 5bf7075 4,093 BA view · diff
git:20260119.97b60262026-01-19 97b6026 3,897 BA view · diff
git:20251221.830153d2025-12-21 830153d 3,961 BA view · diff
git:20251215.f7971052025-12-15 f797105 3,916 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3815 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

zacklecon/claude-skills · 3 stars · license MIT · pushed 2026-10-13 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_wrbuj2jo3ofnnbgk
GET https://markdownregistry.com/api/v1/resolve?ref=zacklecon/claude-skills/api-designer
GET https://markdownregistry.com/api/v1/blob/4e3814657e00765285b272b67d7fa11fedec574a3d90c4f56d7ee29a4ccbd7dd

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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