API Breaking Change Checklist
This one-page Letter PDF is for developers, QA testers, and API reviewers who need a clear check before shipping changes that may break existing clients. It is an API breaking-change checklist with items for paths, parameters, request bodies, response fields, status codes, authentication, and versioning.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 46 KB
Free for personal, family and classroom use.
Use it during code review, release planning, or regression testing to confirm what changed and what must stay stable. Print it for team reviews or keep it open beside your diff so you can mark each item as you verify compatibility.
Good for
- Pre-release API compatibility review
- Code review for breaking updates
- Regression checklist for client support
Tip: Print one copy per endpoint so reviewers can mark changes line by line.
4 files · XLSX, PDF, DOCX
Get every sheet: API Change Review Kit
This sheet plus 3 more in one download, with the editable Excel and Word files. API change log workbook, JSON response test case template, API versioning and breaking-change checklist, and a review sign-off sheet.
$4.00 USD, one-time 4 files · about $1.00 each
- Instant download
- 7-day refund
- Secure checkout by Stripe
7-day money-back guarantee. Full refund within 7 days of purchase, even after you download.
Printable API Change Log
Printable JSON Response Test Case Template
Printable API Change Review Sign-Off