API Compatibility Analyzer Skill

Analyzes API changes between versions to detect breaking changes, assess consumer impact, and suggest migration strategies.

Purpose

Enable API versioning management for:

• Breaking change detection
• Deprecation analysis
• Version comparison
• Consumer impact assessment
• Migration path suggestion

Capabilities

1. Breaking Change Detection

• Detect removed endpoints
• Identify removed fields
• Find type changes
• Flag required field additions

2. Deprecation Analysis

• Track deprecated endpoints
• Monitor deprecation timelines
• Identify usage of deprecated APIs
• Plan sunset schedules

3. Version Comparison

• Compare OpenAPI specs
• Generate detailed diffs
• Categorize changes
• Document migrations

4. Consumer Impact Assessment

• Map affected consumers
• Estimate migration effort
• Identify high-impact changes
• Prioritize notifications

5. Migration Path Suggestion

• Recommend upgrade steps
• Suggest compatibility layers
• Propose versioning strategies
• Design adapter patterns

6. Compatibility Layer Design

• Design facade endpoints
• Plan response translation
• Handle version negotiation
• Implement fallbacks

Tool Integrations

Tool	Purpose	Integration Method
OpenAPI-diff	Spec comparison	CLI
Optic	API change detection	CLI
Akita	Traffic-based detection	API
swagger-diff	Swagger comparison	CLI
Spectral	API linting	CLI

Output Schema

{
  "analysisId": "string",
  "timestamp": "ISO8601",
  "versions": {
    "base": "string",
    "target": "string"
  },
  "changes": {
    "breaking": [
      {
        "type": "string",
        "path": "string",
        "description": "string",
        "migration": "string"
      }
    ],
    "nonBreaking": [],
    "deprecations": []
  },
  "impact": {
    "consumers": [],
    "severity": "string",
    "migrationEffort": "string"
  },
  "recommendations": []
}

Integration with Migration Processes

• api-modernization: Compatibility verification
• framework-upgrade: API impact analysis

Related Skills

• api-inventory-scanner: Endpoint discovery
• openapi-generator: Spec generation

Related Agents

• api-modernization-architect: Versioning strategy