---
phase: 03-mcp-surface-generation
verified: 2026-03-19T23:45:00Z
status: passed
score: 9/9 must-haves verified
re_verification: false
---

# Phase 3: MCP Surface Generation Verification Report

**Phase Goal:** MCP tools are auto-generated from the ActionRegistry, replacing hand-written registration and achieving complete parity with CLI capabilities
**Verified:** 2026-03-19T23:45:00Z
**Status:** passed
**Re-verification:** No — initial verification

---

## Goal Achievement

### Observable Truths

| #  | Truth | Status | Evidence |
|----|-------|--------|----------|
| 1  | McpResponse.from_result() converts any ServiceResult into a Pydantic-validated MCP response dict | VERIFIED | `response.py` lines 77-99: `from_result()` classmethod maps ok, op, data, warnings, error; drops meta |
| 2  | generate_tools() registers one MCP tool per ActionDefinition in the registry (all 59) | VERIFIED | `generator.py` lines 287-300: iterates `registry.list_actions()`, calls `server.tool()(fn)` for each; registry confirmed at 59 actions |
| 3  | Generated tool wrappers call the ActionDefinition handler with vault and return McpResponse-shaped dicts | VERIFIED | `generator.py` lines 177-188: `action.handler(vault, **kwargs)` → `McpResponse.from_result(result).model_dump(exclude_none=True)` |
| 4  | server.py calls generate_tools() instead of register_tools() | VERIFIED | `server.py` line 50: `from ztlctl.mcp.generator import generate_tools`; line 60: `generate_tools(server, vault)` |
| 5  | tools.py is deleted — no _impl functions, no _TOOL_CATALOG, no register_tools() | VERIFIED | `src/ztlctl/mcp/tools.py` does not exist; no remaining imports of `ztlctl.mcp.tools` anywhere |
| 6  | list_items, search, vault_review, and decision_support MCP tools accept a token_budget parameter | VERIFIED | `generator.py` lines 173-195: `BUDGET_AWARE_ACTIONS` frozenset gates `token_budget` injection into `__annotations__` and `__kwdefaults__` |
| 7  | When token_budget is set, response data with large lists is truncated to fit the budget | VERIFIED | `generator.py` lines 30-65: `_apply_token_budget()` iterates list fields, trims until `len(json.dumps(data)) // 4 <= budget`, adds `"truncated": True` |
| 8  | When token_budget is None (default), response is returned untruncated | VERIFIED | `generator.py` line 41: `if budget is None: return data` — identity return, no copy |
| 9  | Every ActionDefinition in the registry has a corresponding MCP tool (parity test proves 59/59) | VERIFIED | `tests/mcp/test_parity.py`: `test_all_actions_have_mcp_tools` asserts `registry_names <= tool_names` and `len >= 59`; `test_tool_count_matches_registry` asserts exact equality; all 6 parity tests pass |

**Score:** 9/9 truths verified

---

### Required Artifacts

#### Plan 01 Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `src/ztlctl/mcp/response.py` | McpResponse and McpError Pydantic models with from_result() classmethod | VERIFIED | Contains `class McpResponse`, `class McpError`, `from_result()`, `COMMON_ERROR_RECOVERY` (9 entries) |
| `src/ztlctl/mcp/generator.py` | generate_tools(), _make_tool_fn(), _build_annotations(), _render_action_doc() | VERIFIED | All 4 functions present; also contains `_apply_token_budget()`, `BUDGET_AWARE_ACTIONS`, compatibility shims |
| `tests/mcp/test_response.py` | Unit tests for McpResponse.from_result() | VERIFIED | 5 tests: `test_from_result_ok`, `test_from_result_error`, `test_from_result_warnings`, `test_from_result_drops_meta`, `test_model_dump_shape` — all pass |
| `tests/mcp/test_generator.py` | Generator tests: tool count, annotations, DummyServer integration | VERIFIED | 18 tests covering count, annotations, doc, kwdefaults, budget truncation, BUDGET_AWARE_ACTIONS set — all pass |
| `src/ztlctl/mcp/tools.py` | DELETED | VERIFIED | File does not exist; no imports of it anywhere in src/ or tests/ |
| `tests/mcp/test_tools.py` | DELETED | VERIFIED | File does not exist |
| `tests/mcp/test_tools_impl.py` | DELETED | VERIFIED | File does not exist |

#### Plan 02 Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `tests/mcp/test_parity.py` | Parity verification: every ActionDefinition has a matching MCP tool | VERIFIED | 6 tests: `test_all_actions_have_mcp_tools`, `test_tool_count_matches_registry`, `test_previously_missing_tools_present`, `test_every_tool_has_doc`, `test_every_tool_has_annotations`, `test_category_coverage` — all pass |
| `src/ztlctl/mcp/generator.py` (budget additions) | Token budget support via _apply_token_budget and BUDGET_AWARE_ACTIONS | VERIFIED | `BUDGET_AWARE_ACTIONS = frozenset({"list_items", "search", "vault_review", "decision_support"})` at line 25; `_apply_token_budget()` at lines 30-65 |

---

### Key Link Verification

#### Plan 01 Key Links

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `src/ztlctl/mcp/generator.py` | `src/ztlctl/actions/registry.py` | `get_action_registry().list_actions()` | WIRED | Lines 17 (import), 218, 262, 296 call `get_action_registry().list_actions()` |
| `src/ztlctl/mcp/generator.py` | `src/ztlctl/mcp/response.py` | `McpResponse.from_result(result)` | WIRED | Lines 180, 188: `McpResponse.from_result(result).model_dump(exclude_none=True)` in both budget and non-budget branches |
| `src/ztlctl/mcp/server.py` | `src/ztlctl/mcp/generator.py` | `generate_tools(server, vault)` | WIRED | Line 50: `from ztlctl.mcp.generator import generate_tools`; line 60: `generate_tools(server, vault)` |

#### Plan 02 Key Links

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `src/ztlctl/mcp/generator.py` | ActionDefinition params | `BUDGET_AWARE_ACTIONS` gates `token_budget` injection | WIRED | Lines 173-195: `is_budget_aware = action.name in BUDGET_AWARE_ACTIONS`; conditional injection into annotations and kwdefaults |
| `tests/mcp/test_parity.py` | `src/ztlctl/actions/registry.py` | `get_action_registry().list_actions()` compared against DummyServer | WIRED | Lines 15, 47, 78, 87, 116: imports and uses `get_action_registry()` in fixture and all parity assertions |

---

### Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|-------------|-------------|--------|---------|
| ACTN-03 | 03-01 | Auto-generated MCP tools from ActionDefinitions — replaces hand-written register_tools() | SATISFIED | `generator.py` iterates all 59 ActionDefinitions; `tools.py` (1499 lines) deleted; `generate_tools()` replaces `register_tools()` |
| AGNT-02 | 03-02 | Token-budget-aware MCP responses for list_items, search, vault_review, decision_support | SATISFIED | `BUDGET_AWARE_ACTIONS` frozenset + `_apply_token_budget()` implemented and tested with 8 dedicated tests |
| PLUG-04 | 03-02 | Complete MCP tool parity with CLI — achieved by construction via ActionRegistry | SATISFIED | `test_parity.py` proves 59/59 coverage; `test_previously_missing_tools_present` confirms archive, supersede, apply, check_pending, stamp_current, check, init_vault, init_workflow, update_workflow all present |

No orphaned requirements — all three IDs declared in plan frontmatter are accounted for, and REQUIREMENTS.md maps all three to Phase 3.

---

### Anti-Patterns Found

No anti-patterns detected in the key source files (`generator.py`, `response.py`). No TODO/FIXME/placeholder comments, no empty implementations, no stub return values.

---

### Human Verification Required

None. All observable truths are structurally verifiable:
- Tool registration is proven by DummyServer capture pattern (not requiring live MCP runtime)
- Token budget behavior is proven by unit tests with concrete list data
- Parity is proven by comparing registry names against DummyServer.tools keys

---

### Gaps Summary

No gaps. All 9 observable truths verified, all artifacts substantive and wired, all 3 requirement IDs satisfied.

Key facts confirmed against codebase:
- `src/ztlctl/mcp/tools.py` — confirmed deleted, zero remaining imports
- `src/ztlctl/mcp/generator.py` — 301 lines, fully implemented (not a stub)
- `src/ztlctl/mcp/response.py` — 100 lines, fully implemented
- Registry: 59 actions confirmed via `uv run python -c "...len(r.list_actions())..."`
- 80 MCP tests pass (29 from new test_response + test_generator + test_parity; 51 from pre-existing test_server, test_prompts, test_resources)
- mypy: 0 errors on `src/ztlctl/mcp/`
- ruff: 0 lint errors on `src/ztlctl/mcp/` and `tests/mcp/`

---

_Verified: 2026-03-19T23:45:00Z_
_Verifier: Claude (gsd-verifier)_
