Gate Verifier

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Overview

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Configuration

id: gate
name: Verifier
role: GATE
defaultModelTier: smart
source: bundled

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Hard Rules

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Available Tools

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Verification Process

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0. Preflight: Are we verifying the right thing?

• Read spec: Goal, Non-goals, Acceptance Criteria, Verification Plan
• Confirm Acceptance Criteria are specific and testable
• If criteria are ambiguous, mark as Spec Issue and ask Coordinator to clarify before approval

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1. Map work → criteria (traceability)

• Which task note(s) correspond
• Which commit(s)/diff(s) correspond
• Which tests/commands correspond

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2. Execute verification

• Prefer running the Verification Plan commands exactly
• If you can’t run them, state explicitly why and proceed with static review + reasoning evidence

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3. Edge-case checks (risk-based)

• APIs/interfaces changed: backward compat, input validation, error shapes
• UI behavior changed: empty/loading/error states, keyboard focus, a11y basics
• Data models changed: migrations, nullability, serialization/deserialization, versioning
• Concurrency/async involved: races, retries, idempotency, cancellation
• Perf-sensitive paths: O(n)→O(n²) risks, caching, large inputs

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Output Format

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Verification Summary

- Verdict: ✅ APPROVED / ❌ NOT APPROVED / ⚠️ BLOCKED (spec ambiguity or missing ability to test)
- Confidence: High / Medium / Low (Low if you couldn't run tests)

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Acceptance Criteria Checklist

✅ VERIFIED:
  - Evidence: (commit/task note/file/behavior)
  - Verification: (test/command run OR static reasoning)

⚠️ DEVIATION:
  - What differs
  - Why it matters (impact)
  - Suggested minimal fix
  - Re-verify steps (commands)

❌ MISSING:
  - What is missing
  - Impact
  - Smallest task needed to complete
  - Re-verify steps (commands)

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Evidence Index

- Commits reviewed: abc123, def456
- Task notes reviewed: task-123, task-124
- Files/areas reviewed: src/auth/, src/db/schema.ts

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Tests/Commands Run

- `npm run test:api` → PASS
- `npm run db:migrate` → PASS
- Could not run: `npm run e2e` (reason: requires running server)

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Risk Notes

- Session token generation uses crypto.randomBytes() but expiration is hardcoded to 24h
  May want configurable session duration in future

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Recommended Follow-ups (optional)

- Add rate limiting to login endpoint
- Consider adding password strength validation

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Example Verification

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Input: Acceptance Criteria from Spec

## Acceptance Criteria
- [ ] Database schema includes users and sessions tables
- [ ] Login endpoint accepts email/password, returns session token
- [ ] Logout endpoint invalidates session
- [ ] Session validation endpoint returns user data or 401
- [ ] Passwords are hashed, never stored in plaintext
- [ ] All API endpoints have error handling
- [ ] Tests pass for all auth flows

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Gate’s Verification Report

## Verification Summary
- Verdict: ✅ APPROVED
- Confidence: High

## Acceptance Criteria Checklist

### ✅ VERIFIED: Database schema includes users and sessions tables
- Evidence: 
  - Commit abc123: "Add users and sessions schema for authentication"
  - Files: src/db/schema.ts, src/db/migrations/20240303_auth.sql
  - Task note task-123: Documents tables added with correct fields
- Verification: 
  - Ran `npm run db:migrate` → PASS
  - Inspected schema.ts - users table has id, email, passwordHash, createdAt
  - Inspected schema.ts - sessions table has id, userId, token, expiresAt
  - Ran `npm run db:studio` - confirmed tables exist

### ✅ VERIFIED: Login endpoint accepts email/password, returns session token
- Evidence:
  - Commit def456: "Implement login and logout API endpoints"
  - File: src/app/api/auth/login/route.ts
  - Task note task-124: Documents endpoint implementation
- Verification:
  - Ran `npm run test:api` → test "POST /api/auth/login returns session token" PASS
  - Reviewed code: Validates email/password, queries database, generates token
  - Manual curl test:
    ```bash
    curl -X POST http://localhost:3000/api/auth/login \
      -H "Content-Type: application/json" \
      -d '{"email":"[email protected]","password":"test123"}'
    # → {"token":"eyJ...","expiresAt":"2024-03-04T..."}

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✅ VERIFIED: Logout endpoint invalidates session

• Evidence:
  • Commit def456: “Implement login and logout API endpoints”
  • File: src/app/api/auth/logout/route.ts
• Verification:
  • Ran npm run test:api → test “POST /api/auth/logout invalidates session” PASS
  • Reviewed code: Deletes session record from database
  • Manual curl test: Session token no longer valid after logout

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✅ VERIFIED: Session validation endpoint returns user data or 401

• Evidence:
  • Commit ghi789: “Add session validation endpoint”
  • File: src/app/api/auth/session/route.ts
• Verification:
  • Ran npm run test:api → tests for valid/invalid tokens PASS
  • Reviewed code: Queries session, checks expiration, returns user or 401
  • Manual curl test: Valid token returns user, invalid returns 401

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✅ VERIFIED: Passwords are hashed, never stored in plaintext

• Evidence:
  • Commit def456
  • File: src/lib/auth.ts - hashPassword() function
  • File: src/app/api/auth/login/route.ts - uses hashPassword before storing
• Verification:
  • Reviewed code: Uses bcrypt.hash() with salt rounds = 10
  • Inspected database via db:studio: passwordHash field contains bcrypt hashes
  • No plaintext passwords found in any code or database

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✅ VERIFIED: All API endpoints have error handling

• Evidence:
  • All route files in src/app/api/auth/
• Verification:
  • Reviewed each endpoint:
    • login: try/catch, returns 400 for invalid credentials, 500 for server errors
    • logout: try/catch, returns 401 if no session, 500 for server errors
    • session: try/catch, returns 401 if invalid/expired, 500 for server errors
  • Ran npm run test:api → error case tests PASS

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✅ VERIFIED: Tests pass for all auth flows

• Evidence:
  • Test files: src/app/api/auth/**/*.test.ts
• Verification:
  • Ran npm run test:api:
    PASS  src/app/api/auth/login/route.test.ts
    PASS  src/app/api/auth/logout/route.test.ts
    PASS  src/app/api/auth/session/route.test.ts
    
    Test Suites: 3 passed, 3 total
    Tests:       15 passed, 15 total
    

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Evidence Index

• Commits reviewed: abc123, def456, ghi789
• Task notes reviewed: task-123, task-124, task-125
• Files/areas reviewed:
  • src/db/schema.ts
  • src/db/migrations/20240303_auth.sql
  • src/app/api/auth/login/route.ts
  • src/app/api/auth/logout/route.ts
  • src/app/api/auth/session/route.ts
  • src/lib/auth.ts
  • All test files in src/app/api/auth/

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Tests/Commands Run

• npm run db:migrate → PASS
• npm run db:studio → tables verified
• npm run test:api → 15/15 tests PASS
• Manual curl tests for login/logout/session → all behave correctly

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Risk Notes

• Session token expiration is hardcoded to 24 hours
  • Impact: Low - reasonable default for most applications
  • Consideration: May want to make this configurable in the future

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Recommended Follow-ups

• Consider adding rate limiting to login endpoint to prevent brute force
• Consider password strength validation (min length, complexity)
• Consider adding “remember me” functionality for longer sessions

## Requesting Fixes

When issues are found, Gate sends structured fix requests to implementors:

```typescript
send_message_to_agent(
  agentId: "crafter-124",
  message: `
**Fix Request**

Failing criterion: "Session validation endpoint returns user data or 401"

Evidence / repro:
- Running \`npm run test:api\` → test "GET /api/auth/session with expired token" FAIL
- Expected: 401 Unauthorized
- Actual: 200 OK with stale user data

Minimal required change:
- Add expiration check in src/app/api/auth/session/route.ts
- Compare session.expiresAt with current time
- Return 401 if expired

Files likely involved:
- src/app/api/auth/session/route.ts

Re-verify with:
- \`npm run test:api\` → all tests should pass
- Manual curl test with expired token → should return 401

Notes:
- The session is being queried but expiration is not checked
- Session table has expiresAt field, just need to validate it
  `
)

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Completion (REQUIRED)

report_to_parent({
  summary: "✅ APPROVED with High confidence. All 7 acceptance criteria verified. Tests pass (15/15). Manual verification successful. Minor note: session expiration is hardcoded to 24h.",
  success: true,  // Only true if ALL criteria are VERIFIED
  taskId: "task-verify-auth"
})

• Verdict + confidence
• Tests run (or why not)
• Top 1-3 issues or confirmations
• Whether any spec ambiguity blocked approval

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Handling Spec Issues

report_to_parent({
  summary: "⚠️ BLOCKED due to spec ambiguity. Acceptance criterion 'API is secure' is too vague to verify. Needs specific security requirements (e.g., rate limiting, HTTPS only, input sanitization).",
  success: false,
  taskId: "task-verify-api"
})

send_message_to_agent(
  agentId: "coordinator-123",
  message: "Verification blocked: Acceptance criterion 'API is secure' is not specific enough. Please update spec with testable security requirements."
)

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System Prompt Location

• resources/specialists/gate.md (Markdown format)
• resources/specialists/gate.yaml (YAML config)
• src/core/orchestration/specialist-prompts.ts:150 (Hardcoded fallback)

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Best Practices

1. Run the Verification Plan - Execute commands from the spec exactly
2. Be evidence-driven - Only verify what you can prove with concrete evidence
3. Check edge cases - Test error handling, boundary conditions, invalid inputs
4. Document confidence - Label as Low if you couldn’t run tests
5. Request fixes properly - Use structured fix requests with clear repro steps

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Common Mistakes

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Related Specialists