---
phase: 01-provider-infrastructure
plan: 02
subsystem: api
tags: [providers, abstraction, typescript, interfaces]

# Dependency graph
requires:
  - phase: 01-01
    provides: ProviderType, ProviderConfig, ProviderSettings types
provides:
  - ProviderModel interface for normalized model metadata
  - ModelCapability union type for model capabilities
  - GenerationInput/GenerationOutput interfaces for unified I/O
  - ProviderInterface contract for provider implementations
  - Provider registry with register/get functions
affects: [02-model-discovery, multi-provider generation]

# Tech tracking
tech-stack:
  added: []
  patterns: [provider abstraction pattern, self-registering modules]

key-files:
  created:
    - src/lib/providers/types.ts
    - src/lib/providers/index.ts
  modified: []

key-decisions:
  - "Provider registry uses self-registration pattern via registerProvider()"
  - "Gemini remains special-cased in /api/generate for now, not yet migrated"

patterns-established:
  - "Provider types in src/lib/providers/types.ts"
  - "Provider registry in src/lib/providers/index.ts"
  - "Providers self-register when their modules are imported"

issues-created: []

# Metrics
duration: 2min
completed: 2026-01-09
---

# Phase 01-02: Provider Abstraction Summary

**Provider abstraction interfaces and registry for unified access to Gemini, Replicate, and fal.ai**

## Performance

- **Duration:** 2 min
- **Started:** 2026-01-09T02:35:42Z
- **Completed:** 2026-01-09T02:38:05Z
- **Tasks:** 2
- **Files created:** 2

## Accomplishments
- Created provider abstraction interfaces defining how providers expose model discovery and generation
- Established ProviderInterface contract that all providers will implement
- Built provider registry with self-registration pattern for dynamic provider discovery
- Phase 1 complete - ready for Phase 2: Model Discovery

## Task Commits

Each task was committed atomically:

1. **Task 1: Create provider abstraction interfaces** - `8b49db4` (feat)
2. **Task 2: Create provider registry and factory** - `c8618ab` (feat)

## Files Created/Modified
- `src/lib/providers/types.ts` - Provider abstraction interfaces (ProviderModel, ProviderInterface, GenerationInput/Output, ModelCapability)
- `src/lib/providers/index.ts` - Provider registry with registerProvider(), getProvider(), getConfiguredProviders(), getAllProviders()

## Decisions Made
- Used self-registration pattern where provider modules call registerProvider() on import
- Gemini provider remains special-cased in /api/generate route; may migrate in future phase
- Types exported from both files for convenient imports via "@/lib/providers"

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
- `npm run lint` has pre-existing configuration issue (missing eslint.config.js for ESLint v9). This is not related to this plan's changes. Build passes successfully.

## Next Phase Readiness
- Provider abstraction layer complete with all interfaces defined
- Registry ready to accept provider registrations from Phase 2
- Phase 1 (Provider Infrastructure) complete
- Ready for Phase 2: Model Discovery (Replicate and fal.ai implementations)

---
*Phase: 01-provider-infrastructure*
*Completed: 2026-01-09*