# Aj Geddes Useful AI Prompts API Changelog Versioning

> API Changelog & Versioning

- Skill: `tomevault-io/aj-geddes-useful-ai-prompts-api-changelog-versioning` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add tomevault-io/aj-geddes-useful-ai-prompts-api-changelog-versioning`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/aj-geddes-useful-ai-prompts-api-changelog-versioning/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Integrations & APIs
- Author: tomevault-io (https://skillmd.com/u/tomevault-io)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/tomevault-io/aj-geddes-useful-ai-prompts-api-changelog-versioning

---


# API Changelog & Versioning

## Table of Contents

- [Overview](#overview)
- [When to Use](#when-to-use)
- [Quick Start](#quick-start)
- [Reference Guides](#reference-guides)
- [Best Practices](#best-practices)

## Overview

Create comprehensive API changelogs that document changes, deprecations, breaking changes, and provide migration guides for API consumers.

## When to Use

- API version changelogs
- Breaking changes documentation
- Migration guides between versions
- Deprecation notices
- API upgrade guides
- Backward compatibility notes
- Version comparison

## Quick Start

- Version comparison

````markdown
# API Changelog

## Version 3.0.0 - 2025-01-15

### 🚨 Breaking Changes

#### Authentication Method Changed

**Previous (v2):**

```http
GET /api/users
Authorization: Token abc123
```

## Reference Guides

Detailed implementations in the `references/` directory:

| Guide | Contents |
|---|---|
| [🚨 Breaking Changes](references/breaking-changes.md) | 🚨 Breaking Changes |
| [✨ New Features](references/new-features.md) | ✨ New Features |
| [🔧 Improvements](references/improvements.md) | 🔧 Improvements |
| [🔒 Security](references/security.md) | 🔒 Security, 🗑️ Deprecated, 📊 Version Support Policy |
| [Step 1: Update Base URL](references/step-1-update-base-url.md) | Step 1: Update Base URL, Step 2: Migrate Authentication, Step 3: Update Response Parsing, Step 4: Update Error Handling (+2 more) |

## Best Practices

### ✅ DO

- Clearly mark breaking changes
- Provide migration guides with code examples
- Include before/after comparisons
- Document deprecation timelines
- Show impact on existing implementations
- Provide SDKs for major versions
- Use semantic versioning
- Give advance notice (3-6 months)
- Maintain backward compatibility when possible
- Document version support policy

### ❌ DON'T

- Make breaking changes without notice
- Remove endpoints without deprecation period
- Skip migration examples
- Forget to version your API
- Change behavior without documentation
- Rush deprecations

---
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<!-- tomevault:4.0:skill_md:2026-04-11 -->