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
Diffy	Response comparison	API
Contract testing	API verification	CLI
Cypress	E2E validation	CLI
Playwright	Browser testing	CLI
Custom validators	Business rules	CLI

Output Schema

{
  "validationId": "string",
  "timestamp": "ISO8601",
  "source": {
    "environment": "string",
    "version": "string"
  },
  "target": {
    "environment": "string",
    "version": "string"
  },
  "results": {
    "total": "number",
    "passed": "number",
    "failed": "number",
    "skipped": "number"
  },
  "comparisons": [
    {
      "test": "string",
      "status": "passed|failed",
      "source": {},
      "target": {},
      "differences": []
    }
  ],
  "acceptance": {
    "criteria": [],
    "met": "boolean"
  }
}

Integration with Migration Processes

• migration-testing-strategy: Validation execution
• parallel-run-validation: Parallel comparison

Related Skills

• performance-baseline-capturer: Performance comparison
• data-migration-validator: Data validation

Related Agents

• parallel-run-validator: Parallel validation
• regression-detector: Regression detection