---
phase: 06-mcp-server
verified: 2026-02-03T14:15:00Z
status: passed
score: 10/10 must-haves verified
---
# Phase 6: MCP Server & Installation Verification Report
**Phase Goal:** Claude Code can call the system as an MCP server and install recommended components into .claude/ directory
**Verified:** 2026-02-03T14:15:00Z
**Status:** PASSED
**Re-verification:** No - initial verification
## Goal Achievement
### Observable Truths
| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | MCP server responds to tools/list with 5 tools | VERIFIED | `len(mcp._tool_manager._tools)` returns 5 |
| 2 | search_components returns ranked results with rationale | VERIFIED | `generate_rationale()` wired in server.py line 136 |
| 3 | get_component_detail returns full component info | VERIFIED | Handler at lines 164-206 queries graph_store |
| 4 | check_dependencies returns transitive deps and conflicts | VERIFIED | Calls `resolve_transitive_dependencies()` and `detect_conflicts()` |
| 5 | ingest_repo triggers repository crawling | VERIFIED | `crawler.crawl()` at line 335 |
| 6 | Tool schemas stay under 300 tokens total | VERIFIED | 5 tools with minimal docstrings (under 10 words each) |
| 7 | install_components places files in correct .claude/ subdirectories | VERIFIED | INSTALL_PATHS maps all 7 ComponentTypes |
| 8 | Settings are deep-merged, not overwritten | VERIFIED | `merge_settings()` uses `deep_merge()` function |
| 9 | Dependencies are auto-resolved before installation | VERIFIED | `ComponentInstaller.install()` calls `resolve_transitive_dependencies()` |
| 10 | Conflicts are detected and reported before installation | VERIFIED | `detect_conflicts()` call blocks installation if conflicts |
**Score:** 10/10 truths verified
### Required Artifacts
| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `src/skill_retriever/mcp/server.py` | FastMCP server with 5 tool handlers | VERIFIED | 406 lines, exports `mcp` and `main` |
| `src/skill_retriever/mcp/schemas.py` | Pydantic input/output models | VERIFIED | 104 lines, 5 input models + 6 output models |
| `src/skill_retriever/mcp/rationale.py` | Path-to-rationale conversion | VERIFIED | 130 lines, exports `generate_rationale`, `path_to_explanation` |
| `src/skill_retriever/mcp/installer.py` | Component installation engine | VERIFIED | 302 lines, exports `ComponentInstaller`, `install_component`, `merge_settings` |
| `src/skill_retriever/memory/metadata_store.py` | JSON-backed component metadata storage | VERIFIED | 91 lines, exports `MetadataStore` |
| `tests/test_mcp_server.py` | MCP server tests | VERIFIED | 251 lines, 18 tests |
| `tests/test_installer.py` | Installation tests | VERIFIED | 404 lines, 23 tests |
### Key Link Verification
| From | To | Via | Status | Details |
|------|-----|-----|--------|---------|
| server.py | pipeline.py | `pipeline.retrieve()` | WIRED | Line 123 |
| server.py | crawler.py | `crawler.crawl()` | WIRED | Line 335 |
| server.py | installer.py | `installer.install()` | WIRED | Line 228 |
| installer.py | metadata_store.py | `metadata_store.get()` | WIRED | Line 273 |
| installer.py | components.py | `ComponentType.` | WIRED | INSTALL_PATHS dict lines 22-29 |
| rationale.py | graph.py | `EdgeType` | WIRED | EDGE_DESCRIPTIONS dict lines 15-21 |
### Test Results
```
============================= test session starts =============================
platform win32 -- Python 3.13.11, pytest-9.0.2, pluggy-1.6.0
collected 197 items
...
====================== 197 passed, 3 warnings in 17.16s =======================
```
**All 197 tests pass** including:
- 18 MCP server tests (tool registration, schemas, rationale, URL parsing, install tool)
- 23 installer tests (INSTALL_PATHS, deep_merge, merge_settings, install_component, ComponentInstaller)
### Linting & Type Checking
| Check | Status |
|-------|--------|
| `ruff check src/skill_retriever/mcp/` | All checks passed |
| `pyright src/skill_retriever/mcp/` | 0 errors, 0 warnings |
### Anti-Patterns Found
None. No TODO/FIXME comments, no placeholder content, no stub implementations in the MCP module.
### Human Verification Required
None needed for this phase. All Phase 6 success criteria are verifiable programmatically:
- Tool registration (verified via `_tool_manager._tools`)
- File placement (tested via pytest with tmp_path fixtures)
- Settings merge (tested with deep_merge unit tests)
## Summary
Phase 6 (MCP Server & Installation) is **fully complete** and verified:
1. **FastMCP server** with 5 tools: search_components, get_component_detail, install_components, check_dependencies, ingest_repo
2. **Pydantic schemas** for all input/output models with minimal docstrings
3. **Rationale generator** converts retrieval source to human-readable explanations
4. **Component installer** with:
- INSTALL_PATHS mapping all 7 ComponentTypes to .claude/ subdirectories
- deep_merge for settings JSON (nested dicts recurse, lists extend with dedupe)
- Auto dependency resolution before installation
- Conflict detection blocking installation
5. **MetadataStore** for component lookup during installation
6. **Entry point** `skill-retriever` runs the MCP server via stdio transport
All 197 tests pass. Linting and type checking clean. Ready for Phase 7 (Integration & Validation).
---
*Verified: 2026-02-03T14:15:00Z*
*Verifier: Claude (gsd-verifier)*
