# Phase 2.3 Completion Verification

**Date**: 2026-02-03
**Purpose**: Verify all Phase 2.3 tasks completed via Phase 2.1/2.2 work

## Executive Summary

Phase 2.3 tasks were defined before implementing the comprehensive dual-schema verification system in Phases 2.1/2.2. This audit confirms all Phase 2.3 objectives have been met through that work.

**Status**: All 4 tasks COMPLETE

## Task 2.3.1: Plugin Manifest Verification

**Objective**: Verify plugin.json schema matches official Claude Code spec

### Verification Results

**Manual JSON Schema Created**: `schemas/plugin-manifest.schema.json`

- Source: <https://code.claude.com/docs/en/plugins-reference#plugin-manifest-schema>
- Draft: 2020-12
- Status: Created in Phase 2.1

**Zod Schema**: `PluginManifestSchema` in `src/validators/schemas.ts`

- Fixed in Phase 1 (Task 1.4)
- All fields match official spec
- Component paths verified: skills, agents, commands (string | array)
- Config paths verified: hooks, mcpServers, lspServers (string | object)

**Comparison Result** (Phase 2.2):

```text
✓ PluginManifestSchema: No drift detected
```

**Fields Verified** (15 total):

- [x] name (required, string, kebab-case)
- [x] version (optional, semver pattern)
- [x] description (optional, string)
- [x] author (optional, string | object)
- [x] homepage (optional, URI)
- [x] repository (optional, URI)
- [x] license (optional, string)
- [x] keywords (optional, array of strings)
- [x] commands (optional, string | array - paths to command files)
- [x] agents (optional, string | array - paths to agent files)
- [x] skills (optional, string | array - paths to skill directories)
- [x] hooks (optional, string | object - hooks.json path or inline)
- [x] mcpServers (optional, string | object - .mcp.json path or inline)
- [x] outputStyles (optional, string | array - output style paths)
- [x] lspServers (optional, string | object - .lsp.json path or inline)

**Validation Rules Updated**:

- plugin-missing-file.ts handles union types (string | array | object)
- Deprecated 2 rules for non-existent `dependencies` field

**Conclusion**: COMPLETE via Phase 2.1/2.2

---

## Task 2.3.2: Hook Events Verification

**Objective**: Verify hook event names match official Claude Code spec

### Verification Results

**Manual JSON Schema Created**: `schemas/hooks-config.schema.json`

- Source: <https://code.claude.com/docs/en/hooks>
- Event enum: 13 official events
- Status: Created in Phase 2.1

**Zod Constant**: `HookEvents` in `src/schemas/constants.ts`

```typescript
export const HookEvents = z.enum([
  'PreToolUse',
  'PostToolUse',
  'PostToolUseFailure',
  'PermissionRequest',
  'UserPromptSubmit',
  'Notification',
  'Stop',
  'SubagentStart',
  'SubagentStop',
  'PreCompact',
  'Setup',
  'SessionStart',
  'SessionEnd',
]);
```

**JSON Schema Enum** (from hooks-config.schema.json):

```json
{
  "event": {
    "enum": [
      "SessionStart",
      "UserPromptSubmit",
      "PreToolUse",
      "PermissionRequest",
      "PostToolUse",
      "PostToolUseFailure",
      "Notification",
      "SubagentStart",
      "SubagentStop",
      "Stop",
      "PreCompact",
      "SessionEnd",
      "Setup"
    ]
  }
}
```

**Comparison** (Phase 2.2):

- Both sources: 13 events
- All events match (order differs but sets are identical)
- Comparison tool verified: No drift detected

**Event Validation Rule**: `hooks-invalid-event.ts`

- Uses `VALID_HOOK_EVENTS` constant (derived from HookEvents)
- Validates hook event names at runtime
- Warnings for unknown events

**Conclusion**: COMPLETE via Phase 2.1/2.2

---

## Task 2.3.3: MCP Config Verification

**Objective**: Verify MCP server config schema matches official spec

### Verification Results

**Manual JSON Schema Created**: `schemas/mcp-config.schema.json`

- Source: <https://code.claude.com/docs/en/mcp>
- Status: Created in Phase 2.1 (CRITICAL drift found and fixed)

**Zod Schema**: `MCPConfigSchema` in `src/validators/schemas.ts`

- Completely restructured in Phase 2.1
- Changed from nested to flat structure
- Transport types: stdio, sse, http, websocket

**Drift Found and Fixed**:

- OLD (WRONG): `{ name, transport: { type, ... } }`
- NEW (CORRECT): `{ type, command, url, headers, ... }` (flat)
- Impact: 13 validation rules updated

**Comparison Result** (Phase 2.2):

```text
✓ MCPConfigSchema: No drift detected
```

**Transport Types Verified**:

```typescript
export const TransportTypes = z.enum(['stdio', 'sse', 'http', 'websocket']);
```

**Structure Verified**:

- mcpServers: Record<string, MCPServerSchema>
- Server names are object keys (not `name` field)
- Transport fields are flat (not nested under `transport`)
- Each transport type has correct fields (command for stdio, url for http/sse/websocket)

**Validation Rules Updated** (13 total):

- mcp-server-name-invalid.ts
- mcp-server-name-too-short.ts
- mcp-command-not-executable.ts
- mcp-url-invalid.ts
- mcp-transport-type-invalid.ts
- mcp-stdio-missing-command.ts
- mcp-http-missing-url.ts
- mcp-sse-missing-url.ts
- mcp-websocket-missing-url.ts
- mcp-env-var-invalid.ts
- mcp-header-value-empty.ts
- mcp-duplicate-server-name.ts
- mcp-config-invalid-schema.ts

**Conclusion**: COMPLETE via Phase 2.1/2.2 (with major fixes)

---

## Task 2.3.4: Create Hybrid Verification Framework

**Objective**: Build framework combining manual extraction with automated verification

### Verification Results

**Framework Components Built** (Phase 2.1/2.2):

1. **Manual Extraction Process**:
   - Developer reads official Claude Code documentation
   - Creates JSON Schema reference encoding official spec
   - Stores in `schemas/*.schema.json`
   - Adds `source` and `sourceType` metadata

2. **Automated Generation**:
   - Script: `scripts/generate/json-schemas.ts`
   - Converts Zod schemas → JSON Schemas using zod-to-json-schema
   - Generates 8 schemas on demand
   - Output: `schemas/generated/*.generated.json` (gitignored)

3. **Automated Comparison**:
   - Script: `scripts/verify/compare-schemas.ts`
   - Compares manual reference vs generated
   - Detects: missing fields, wrong types, enum mismatches, missing required
   - Allows Zod to be stricter (extra validations OK)
   - Rejects Zod being looser (missing fields = ERROR)

4. **Orchestration**:
   - Script: `scripts/check/schema-sync.ts`
   - Workflow: generate → compare → report
   - Shows drift history
   - Exits non-zero if drift detected

5. **CI Integration**:
   - Job: `schema-sync` in `.github/workflows/ci.yml`
   - Runs on every PR and push to main
   - Blocks merges if drift detected
   - Part of complete-validation dependencies

### Framework Capabilities

**What It Does**:

- ✓ Combines manual extraction (reading docs) with automated verification
- ✓ Encodes official specs as machine-readable references
- ✓ Automatically detects drift between implementation and specs
- ✓ Provides clear, actionable error messages
- ✓ Runs in CI to catch drift early
- ✓ Supports all 8 Claude Code schemas

**What It Doesn't Do** (by design):

- ✗ Fetch schemas from remote URLs (manual references are local)
- ✗ Auto-fix drift (requires human review)
- ✗ Verify runtime behavior (only schema structure)

### Comparison to Original "Hybrid Verification" Concept

**Original Proposal** (from truth-registry-proposal.md):

1. Manual extraction: Developer reads docs, extracts spec
2. Codify as test cases: Create test suite that validates against spec
3. Automate test execution: CI runs tests on every change

**What We Built** (Phase 2.1/2.2):

1. Manual extraction: Developer reads docs, creates JSON Schema ✓
2. Codify as schemas: JSON Schema is more precise than test cases ✓
3. Automate comparison: CI runs generate + compare on every change ✓

**Advantages of Our Approach**:

- JSON Schema is machine-readable (vs. prose in test cases)
- Comparison is comprehensive (all fields, types, enums)
- Can detect subtle drift (wrong types, missing fields)
- Reusable across all schemas (not per-schema test suites)

**Conclusion**: COMPLETE - Dual-schema system IS the hybrid verification framework

---

## Overall Phase 2.3 Assessment

### Tasks Summary

| Task | Status | Method |
|:-----|:-------|:-------|
| 2.3.1: Plugin manifest verification | COMPLETE | Dual-schema verification (Phase 2.1/2.2) |
| 2.3.2: Hook events verification | COMPLETE | Dual-schema verification (Phase 2.1/2.2) |
| 2.3.3: MCP config verification | COMPLETE | Dual-schema verification (Phase 2.1/2.2) |
| 2.3.4: Hybrid verification framework | COMPLETE | Implemented as dual-schema system |

### Acceptance Criteria

- [x] Plugin manifest schema verified against official docs
- [x] All component paths verified (skills, agents, commands)
- [x] All config paths verified (hooks, mcpServers, lspServers)
- [x] Hook events enum verified (13 events match official spec)
- [x] Hook validation rule uses correct event list
- [x] MCP config schema verified against official docs
- [x] MCP transport types verified
- [x] MCP structure verified (flat, not nested)
- [x] Hybrid verification framework built (dual-schema system)
- [x] Framework runs in CI
- [x] Framework detects all drift types

### Evidence

**Comparison Tool Results**:

```text
✓ PluginManifestSchema: No drift detected
✓ HooksConfigSchema: No drift detected
✓ MCPConfigSchema: No drift detected
(8/8 schemas total - all verified)
```

**CI Integration**: `.github/workflows/ci.yml`

- Job runs on every PR
- Uses modernized schema-sync script
- Fails if drift detected

**Scripts Created**:

- `scripts/generate/json-schemas.ts` (103 lines)
- `scripts/verify/compare-schemas.ts` (255 lines)
- `scripts/check/schema-sync.ts` (185 lines, 66% reduction)

### Conclusion

**Phase 2.3 is COMPLETE via Phase 2.1/2.2 work.**

The dual-schema verification system built in Phases 2.1/2.2 meets and exceeds all Phase 2.3 objectives:

- All 3 specific verification tasks are complete
- The hybrid verification framework has been implemented
- All schemas are verified with 0 drift detected
- CI integration ensures ongoing verification

**Recommendation**: Mark Phase 2.3 as complete and proceed to Phase 2.4 (Manual Verification Support for constants like ToolNames and ModelNames).
