Agent skill

migration-validator

Validate functional equivalence after migration with side-by-side comparison and behavioral verification

Stars 514
Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/a5c-ai/babysitter/tree/main/library/specializations/code-migration-modernization/skills/migration-validator

SKILL.md

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

json
{
  "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

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