API Changelog & Versioning

Document API changes with clear migration paths and deprecation timelines.

Changelog Structure

API Changelog

v3.0.0 (2025-01-15) - Breaking Changes

Breaking Changes

• Response format now follows JSON:API specification
• Authentication switched from API tokens to JWT Bearer

Migration Steps

1. Update base URL to /api/v3
2. Replace Authorization: Token xxx with Authorization: Bearer xxx
3. Update response parsing for new envelope format

v2.5.0 (2024-12-01) - Features

New Features

• Webhook support for order events
• Batch operations endpoint
• Field filtering via ?fields= parameter

Improvements

• 56% faster response times on /products
• Enhanced error messages with field-specific suggestions

Deprecation Schedule

Version Status Support Until

v3.x Current Full support

v2.x Maintenance 2025-06-01

v1.x EOL Unsupported

Version Support Policy

• Current: Full support, new features

• Maintenance: Bug fixes and security only

• EOL: No support, remove from docs

Migration Guide Template

Migrating from v2 to v3

Before (v2)

{ "user_name": "john" }

After (v3)

{ "data": { "type": "user", "attributes": { "name": "john" } } }

Steps

- Update SDK to v3.x

- Modify response handlers

- Test in staging environment

- Update production

## Best Practices

- Provide 3-6 months deprecation notice
- Include before/after code examples
- Mark breaking changes prominently
- Maintain backward compatibility when feasible
- Version via URL path (`/api/v1/`) for clarity