Project 3: AI Action SDK OpenAPI Action Bridge
Convert stable business APIs into safe, agent-usable Alexa+ actions.
Quick Reference
| Attribute | Value |
|---|---|
| Difficulty | Level 3 (Advanced) |
| Time Estimate | 1-2 weeks |
| Main Programming Language | TypeScript |
| Alternative Programming Languages | Python, Go |
| Key Topics | OpenAPI contracts, idempotency, action safety |
1. Learning Objectives
- Publish versioned action contracts from API schemas.
- Implement idempotent commit behavior for retries.
- Define clear error taxonomy and remediation prompts.
2. All Theory Needed (Per-Concept Breakdown)
Concept A: Tool Contract Integrity
- Fundamentals: actions must expose explicit preconditions and typed parameters.
- How it works: validate request shape before business logic.
- Failure modes: hidden required fields, brittle enums, ambiguous errors.
Concept B: Idempotent Transactions
- Use deterministic idempotency keys for high-risk actions.
- Return prior success result for replayed commits.
3. Architecture and Build Plan
- Draft OpenAPI for top three transactional endpoints.
- Map endpoints to action metadata (risk, confirmation required).
- Build contract tests and replay simulations.
4. Validation and Testing
- Lint and compatibility checks pass.
- Replay does not duplicate side effects.
- Error classes map to user-friendly responses.
5. Troubleshooting
- Symptom: duplicate records after timeout retries.
- Fix: enforce idempotency key storage and replay lookup.
6. Deliverables
- Versioned action catalog.
- Contract test suite output.
- Error-to-prompt mapping document.
7. Stretch Goals
- Add schema governance with breaking-change approval gate.