---
milestone: v1.1
audited: 2026-01-21T21:30:00Z
status: passed
scores:
  requirements: 16/16
  phases: 5/5
  integration: 18/18
  flows: 4/4
gaps:
  requirements: []
  integration: []
  flows: []
tech_debt: []
---

# Milestone Audit: v1.1 SDK & Docs

**Audited:** 2026-01-21T21:30:00Z
**Status:** PASSED
**Milestone Goal:** SDK supports x402 v2 format with type-safe discrimination; merchants have refund documentation

## Executive Summary

All requirements satisfied. All phases verified. Cross-phase integration complete. No gaps or tech debt.

## Requirements Coverage

**Score:** 16/16 requirements satisfied

### SDK Types (Phases 12-14)

| Requirement | Phase | Status | Evidence |
|-------------|-------|--------|----------|
| SDK-01: PaymentPayloadV1 with literal `x402Version: 1` | 12 | ✓ SATISFIED | types.ts:17-34 |
| SDK-02: PaymentPayloadV2 with literal `x402Version: 2` and `accepted` | 12 | ✓ SATISFIED | types.ts:36-56 |
| SDK-03: Union type `PaymentPayload` | 12 | ✓ SATISFIED | types.ts:58 |
| SDK-04: Type guard `isPaymentPayloadV1()` | 13 | ✓ SATISFIED | utils.ts:44 |
| SDK-05: Type guard `isPaymentPayloadV2()` | 13 | ✓ SATISFIED | utils.ts:60 |
| SDK-06: Helper `getSchemeNetwork()` | 13 | ✓ SATISFIED | utils.ts:100 |
| SDK-07: All types exported from package index | 14 | ✓ SATISFIED | index.ts:5-20, 44-54 |
| SDK-08: `assertNever` utility | 13 | ✓ SATISFIED | utils.ts:133 |
| SDK-09: PaymentRequirementsV1/V2 types with union | 12 | ✓ SATISFIED | types.ts:84, 113, 134 |
| SDK-10: `verify()` handles v1 and v2 | 14 | ✓ SATISFIED | client.ts:48-73 |
| SDK-11: `settle()` handles v1 and v2 | 14 | ✓ SATISFIED | client.ts:80-105 |
| SDK-12: Request body construction correct | 14 | ✓ SATISFIED | client.ts uses getVersionSafe |

### Refund Documentation (Phase 15)

| Requirement | Phase | Status | Evidence |
|-------------|-------|--------|----------|
| DOCS-01: MDX page at `/docs/sdk/refunds/` | 15 | ✓ SATISFIED | page.mdx (331 lines) |
| DOCS-02: Sidebar navigation entry | 15 | ✓ SATISFIED | Sidebar.tsx:27 |
| DOCS-03: `reportFailure` examples | 15 | ✓ SATISFIED | 19 references, 3 examples |
| DOCS-04: `withRefundProtection` examples | 15 | ✓ SATISFIED | 11 references, full flow example |

### Bug Fix (Phase 16)

| Requirement | Phase | Status | Evidence |
|-------------|-------|--------|----------|
| FIX-01: Create missing facilitator markers | 16 | ✓ SATISFIED | backfillFacilitatorMarkers() |
| FIX-02: Auto-create on new facilitators | 16 | ✓ SATISFIED | ensureFacilitatorMarker() in creation paths |

## Phase Verification Summary

| Phase | Score | Status | Gaps | Tech Debt |
|-------|-------|--------|------|-----------|
| 12 - SDK Type Definitions | 5/5 | ✓ PASSED | 0 | 0 |
| 13 - SDK Type Guards & Utilities | 5/5 | ✓ PASSED | 0 | 0 |
| 14 - SDK Method Updates | 7/7 | ✓ PASSED | 0 | 0 |
| 15 - Refund Documentation | 4/4 | ✓ PASSED | 0 | 0 |
| 16 - Whitelabel Volume Tracking | 4/4 | ✓ PASSED | 0 | 0 |

**Total:** 25/25 must-haves verified across 5 phases

## Cross-Phase Integration

**Score:** 18/18 exports properly wired

### Dependency Chain

```
Phase 12 (types.ts)
    ↓ imports types
Phase 13 (utils.ts)
    ↓ imports utilities
Phase 14 (client.ts, index.ts)
    ↓ exports all
@openfacilitator/sdk package
```

### Wiring Verification

| From | To | Via | Status |
|------|----|----|--------|
| types.ts | utils.ts | import types | ✓ CONNECTED |
| utils.ts | client.ts | import getVersionSafe | ✓ CONNECTED |
| types.ts | index.ts | re-export types | ✓ CONNECTED |
| utils.ts | index.ts | re-export utilities | ✓ CONNECTED |
| client.ts | index.ts | re-export SDK client | ✓ CONNECTED |

### Orphaned Exports

None detected. All Phase 12-16 exports are properly imported and used.

### Missing Connections

None detected. All expected cross-phase dependencies are satisfied.

## E2E Flow Verification

**Score:** 4/4 flows complete

| Flow | Status | Verification |
|------|--------|--------------|
| SDK: User imports types + guards + methods | ✓ COMPLETE | All exports in index.ts, build succeeds |
| SDK: verify/settle validates x402 version | ✓ COMPLETE | getVersionSafe called at method entry |
| Docs: User navigates to /docs/sdk/refunds | ✓ COMPLETE | Sidebar entry + MDX page + build output |
| Rewards: Facilitator owner sees volume | ✓ COMPLETE | Marker creation + aggregation + API endpoint |

## Build Verification

| Package | Status | Output |
|---------|--------|--------|
| @openfacilitator/sdk | ✓ SUCCESS | 30.14 KB CJS, 27.72 KB ESM |
| dashboard | ✓ SUCCESS | 27 static pages |
| @openfacilitator/server | ✓ SUCCESS | tsc completed |

## Anti-Patterns Scan

No anti-patterns detected across all phases:
- ✓ No TODO/FIXME/placeholder comments
- ✓ No empty return statements
- ✓ No console.log-only implementations
- ✓ No stub patterns detected

## Tech Debt

None accumulated. All implementations are complete and production-ready.

## Gaps

### Critical Blockers

None.

### Non-Critical Gaps

None.

## Conclusion

**Milestone v1.1 SDK & Docs is ready to ship.**

All 16 requirements satisfied. All 5 phases verified. Cross-phase integration complete. No gaps or tech debt.

Key accomplishments:
1. SDK now supports x402 v2 format with full TypeScript type narrowing
2. Type guards enable runtime version discrimination
3. verify() and settle() handle both v1 and v2 payloads
4. Comprehensive refund documentation for merchants
5. Whitelabel facilitator volume tracking fixed

---

*Audited: 2026-01-21T21:30:00Z*
*Auditor: Claude (gsd-audit-milestone)*
