migration-validator
Validate functional equivalence after migration with side-by-side comparison and behavioral verification
npx skills add a5c-ai/babysitter --skill migration-validator --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Migration Validator Skill Validates functional equivalence between source and target systems after migration through comprehensive comparison and behavioral verification. ## Purpose Enable migration validation for: - Side-by-side comparison - Output diffing - Behavioral verification - Data consistency checking - Acceptance criteria verification ## Capabilities ### 1. Side-by-Side Comparison - Run parallel requests - Compare responses - Track differences - Document discrepancies ### 2. Output Diffing - Compare API responses - Diff file outputs - Check data formats - Validate transformations ### 3. Behavioral Verification - Test user flows - Verify business logic - Check edge cases - Validate error handling ### 4. Data Consistency Checking - Compare data states - Verify calculations - Check relationships - Validate constraints ### 5. Integration Validation - Test external integrations - Verify API contracts - Check message flows - Validate events ### 6. Acceptance Criteria Verification - Check feature completeness - Verify requirements - Validate user stories - Document coverage ## Tool Integrations | Tool | Purpose | Integration Method | |------|---------|-------------------| | Di
- Purpose
- Capabilities
- 1. Side-by-Side Comparison
- 2. Output Diffing
- 3. Behavioral Verification
- 4. Data Consistency Checking
- 5. Integration Validation
- 6. Acceptance Criteria Verification
- Tool Integrations
- Output Schema
- Integration with Migration Processes
- Related Skills
- Related Agents
What does the migration-validator skill do?
Validate functional equivalence after migration with side-by-side comparison and behavioral verification
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill migration-validator --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.