Migrate Callers Then Delete Legacy APIs
SkillAI & modelsApply when introducing a new internal API while old callers still exist. Migrate callers and delete the old API in the same wave instead of preserving compatibility layers.
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Then ask your AI: use the Migrate Callers Then Delete Legacy APIs skill
What this skill tells your AI
The instructions your AI receives, as published by michael-denyer/pstack-claude in plugins/pstack/skills/principle-migrate-callers-then-delete-legacy-apis/SKILL.md and read by ahel’s review.
When we decide a new API is the right design, migrate callers and remove the old API in the same refactor wave instead of preserving compatibility layers.
Rule:
- Do not keep legacy API paths only because internal callers still exist
- Inventory callers, migrate them, and delete the old API immediately
- Treat temporary adapters as exceptional and time-boxed, not default architecture
- Update tests to assert the new contract, and delete tests that only protect pre-refactor implementation details
When this applies:
- No external users depend on backward compatibility
- The project can absorb coordinated breaking changes
- The new API is part of a simplification or refactor initiative
Keeping both old and new APIs creates dual-path complexity, slows cleanup, and makes the codebase feel append-only.
Signals
- GitHub stars
- 341
- Forks
- 41
- Last commit
- Sep 2026
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principle-migrate-callers-then-delete-legacy-apis-mi-1ay2m4u- Source
- github.com/michael-denyer/pstack-claude