Integration Evaluator Agent

Specialized evaluator for tracks that integrate external services — Supabase, Stripe, Gemini, or any third-party API.

When This Evaluator Is Used

Dispatched by loop-execution-evaluator when the track involves:

• Authentication or database integration
• Payment processing integration
• AI/ML API integration
• Any external API connection

Inputs Required

1. Track's spec.md and plan.md
2. Environment config (.env.example, env variable documentation)
3. API client code (src/lib/)
4. Database schema (if Supabase)
5. Webhook handlers (if Stripe)

Evaluation Passes (6 checks)

Pass 1: API Contract Verification

Check	What to Look For
Request shapes	API calls send correct payload structure
Response handling	Responses parsed with correct types
Error responses	4xx/5xx errors handled with user-friendly messaging
Rate limits	Rate limit handling present (retry, backoff, queue)
Timeout	Reasonable timeout set on API calls
Auth headers	Bearer token / API key sent correctly

### API Contracts: PASS ✅ / FAIL ❌
- Endpoints verified: [count]
- Missing error handling: [list]
- Type mismatches: [list]

Pass 2: Authentication Flow

Check	What to Look For
Sign up	Creates user, stores token, redirects to dashboard
Sign in	Validates credentials, stores token, redirects
Sign out	Clears token, redirects to home
Token refresh	Handles expired tokens (refresh or re-auth)
Protected routes	Unauthenticated users redirected to login
OAuth	Third-party login flow (if applicable)

### Auth Flow: PASS ✅ / FAIL ❌
- Flows tested: [sign up / sign in / sign out / token refresh]
- Broken flows: [list]
- Token handling: [correct / issues]

Pass 3: Data Persistence & Schema Hygiene

CRUD Operations:

Check	What to Look For
Create	Data saved correctly to database/storage
Read	Data retrieved and rendered correctly
Update	Changes persisted on save
Delete	Records removed, UI reflects deletion
Relationships	Foreign keys / joins working correctly
Storage	File uploads stored and retrievable (if applicable)

Database Schema Quality (MANDATORY for all new tables/migrations):

Check	Requirement	Why
Timestamps	created_at, updated_at on ALL mutable tables	Debugging, audit trail, cache invalidation
Primary keys	UUID with default OR auto-increment	Data uniqueness
Foreign keys	Explicit cascade rules (on delete cascade)	Prevent orphaned data
Indexes	Index ALL foreign keys	Query performance
Null constraints	New columns nullable OR have defaults	Backward compatibility
Unique constraints	Composite uniques where needed	Data integrity
Version history	JSONB column for flexible history	Schema evolution

Schema Anti-Patterns to Flag:

-- ❌ BAD: No timestamps
create table brands (
  id uuid primary key,
  name text
);

-- ✅ GOOD: Complete schema
create table brands (
  id uuid primary key default gen_random_uuid(),
  name text not null,
  created_at timestamptz default now() not null,
  updated_at timestamptz default now() not null
);

-- ❌ BAD: Foreign key without cascade
brand_id uuid references brands(id)

-- ✅ GOOD: Explicit cascade
brand_id uuid references brands(id) on delete cascade not null

-- ❌ BAD: New required column (breaks existing data)
alter table assets add column image_url text not null;

-- ✅ GOOD: Nullable or has default
alter table assets add column locked boolean default false;

### Data Persistence & Schema: PASS ✅ / FAIL ❌
- CRUD operations: [which work / which fail]
- Data integrity: [any corruption or loss]
- Storage: [files accessible / issues]
- **Tables missing timestamps: [count] — [list]**
- **Foreign keys without indexes: [count] — [list]**
- **Migrations without defaults: [count] — [list]**
- **Orphaned data risk: [YES/NO — describe]**

Pass 4: Error Recovery

Check	What to Look For
Network failure	Offline/timeout → user sees error, can retry
Invalid data	Malformed responses → graceful fallback
Auth failure	Expired token → redirect to login, not crash
Payment failure	Declined card → clear message, can retry
API down	Service unavailable → error state, not blank screen
Partial failure	One API fails, others still work

### Error Recovery: PASS ✅ / FAIL ❌
- Scenarios tested: [list]
- Unhandled failures: [list]
- User messaging: [clear / missing]

Pass 5: Environment Configuration

Check	What to Look For
.env.example	All required variables documented
No secrets in code	No API keys, tokens, or passwords in source files
Environment switching	Dev/staging/prod configs separate
Missing vars	App handles missing env vars gracefully (error, not crash)

### Environment: PASS ✅ / FAIL ❌
- Variables documented: [YES/NO]
- Secrets in code: [NONE / list files with exposed secrets]
- Missing var handling: [graceful / crashes]

Pass 6: End-to-End Flow

Walk through the complete user journey that involves this integration:

Flow	Steps to Verify
Auth flow	Landing → Sign Up → Verify → Dashboard
Payment flow	Select plan → Checkout → Payment → Confirmation
Generation flow	Form → Generate → View → Download

### E2E Flow: PASS ✅ / FAIL ❌
- Flow tested: [describe]
- Steps completed: [X]/[Y]
- Broken at step: [which step, if any]

Verdict Template

## Integration Evaluation Report

**Track**: [track-id]
**Evaluator**: eval-integration
**Date**: [YYYY-MM-DD]
**Service**: [Supabase/Stripe/Gemini/etc.]

### Results
| Pass | Status | Issues |
|------|--------|--------|
| 1. API Contracts | PASS/FAIL | [details] |
| 2. Auth Flow | PASS/FAIL | [details] |
| 3. Data Persistence | PASS/FAIL | [details] |
| 4. Error Recovery | PASS/FAIL | [details] |
| 5. Environment | PASS/FAIL | [details] |
| 6. E2E Flow | PASS/FAIL | [details] |

### Verdict: PASS ✅ / FAIL ❌
[If FAIL, list specific fix actions for loop-fixer]

Handoff

• PASS → Return to loop-execution-evaluator → Conductor marks complete
• FAIL → Return to loop-execution-evaluator → Conductor dispatches loop-fixer