---
phase: 18-publishing-pipeline
verified: 2026-02-26T18:15:00Z
status: passed
score: 10/10 must-haves verified
re_verification: false
---

# Phase 18: Publishing Pipeline Verification Report

**Phase Goal:** Developer can generate deployment artifacts for ChatGPT App Directory submission and shareable demo pages from their MCP Apps project
**Verified:** 2026-02-26T18:15:00Z
**Status:** passed
**Re-verification:** No — initial verification

## Goal Achievement

### Observable Truths

| #  | Truth                                                                                       | Status     | Evidence                                                                                                                    |
|----|---------------------------------------------------------------------------------------------|------------|-----------------------------------------------------------------------------------------------------------------------------|
| 1  | Running `cargo pmcp app manifest --url URL` produces dist/manifest.json                     | VERIFIED   | `run_manifest()` in app.rs calls detect->generate_manifest->write_manifest pipeline; write_manifest creates dir + file      |
| 2  | manifest.json contains schema_version, name, description, auth, api, logo_url, mcp_apps     | VERIFIED   | `generate_manifest` in manifest.rs builds json! macro with all required fields; 14 unit tests confirm structure             |
| 3  | Tool-to-widget mappings in manifest auto-discovered from widgets/ directory files            | VERIFIED   | `detect_project` in detect.rs scans `widgets/*.html`; tests confirm discovery, sorting, and mapping into manifest           |
| 4  | Running outside an MCP Apps project produces a clear error message                          | VERIFIED   | `verify_mcp_apps_feature` bails with "Not an MCP Apps project..." and missing Cargo.toml returns "No Cargo.toml found..."   |
| 5  | Running `cargo pmcp app landing` produces dist/landing.html                                 | VERIFIED   | `create_landing()` in app.rs calls detect->load_mock_data->generate_landing->write_landing pipeline; file written to output  |
| 6  | Generated landing.html is self-contained: widget HTML, mock bridge JS, CSS all inlined      | VERIFIED   | `generate_landing` in landing.rs inlines LANDING_CSS in `<style>`, injects mock bridge script, embeds widget via srcdoc     |
| 7  | Widget JavaScript calling callTool() receives hardcoded mock responses from mock-data/*.json | VERIFIED   | `inject_mock_bridge` injects `window.mcpBridge` with `_mockData` loaded from `load_mock_data()`; callTool returns data[name] |
| 8  | `cargo pmcp app build --url URL` generates both manifest.json and landing.html in dist/     | VERIFIED   | `build_all()` in app.rs calls detect_project once then both manifest and landing generation pipelines                       |
| 9  | Missing mock-data/ directory produces a clear error message                                 | VERIFIED   | `load_mock_data` bails with "No mock data found. Create mock-data/tool-name.json for each tool."                            |
| 10 | `cargo pmcp app new` scaffold creates mock-data/hello.json                                  | VERIFIED   | `generate()` in mcp_app.rs creates mock-data/ dir and writes hello.json; tests `test_generate_creates_mock_data` confirms   |

**Score:** 10/10 truths verified

### Required Artifacts

| Artifact                                     | Expected                                     | Status     | Details                                                                   |
|----------------------------------------------|----------------------------------------------|------------|---------------------------------------------------------------------------|
| `cargo-pmcp/src/publishing/mod.rs`           | Publishing module declarations               | VERIFIED   | Declares `pub mod detect; pub mod landing; pub mod manifest;`             |
| `cargo-pmcp/src/publishing/detect.rs`        | MCP Apps project detection from Cargo.toml   | VERIFIED   | `detect_project(path)` function present, 493 lines, 11 tests              |
| `cargo-pmcp/src/publishing/manifest.rs`      | ChatGPT-compatible manifest JSON generation  | VERIFIED   | `generate_manifest` function present, 299 lines, 14 unit tests            |
| `cargo-pmcp/src/publishing/landing.rs`       | Landing page HTML generation with mock bridge | VERIFIED  | `generate_landing` function present, 518 lines, 13 unit tests             |
| `cargo-pmcp/src/commands/app.rs`             | All AppCommand variants (Manifest, Landing, Build) | VERIFIED | All 4 variants present with full implementations; 235 lines              |
| `cargo-pmcp/src/templates/mcp_app.rs`        | Updated scaffold template with mock-data/    | VERIFIED   | `generate_mock_hello()` and `mock-data/` creation present; tests confirm  |

### Key Link Verification

| From                          | To                                | Via                                                | Status   | Details                                                         |
|-------------------------------|-----------------------------------|----------------------------------------------------|----------|-----------------------------------------------------------------|
| `commands/app.rs`             | `publishing/manifest.rs`          | `AppCommand::Manifest` calls `run_manifest()`      | WIRED    | `publishing::manifest::generate_manifest` called in `run_manifest` at line 141 |
| `commands/app.rs`             | `publishing/detect.rs`            | All handlers call `detect_project(&cwd)`           | WIRED    | `publishing::detect::detect_project` called in run_manifest, create_landing, build_all |
| `publishing/manifest.rs`      | `publishing/detect.rs`            | Imports `ProjectInfo` from detect                  | WIRED    | `use super::detect::ProjectInfo;` at line 12                    |
| `commands/app.rs`             | `publishing/landing.rs`           | `AppCommand::Landing` calls `create_landing()`     | WIRED    | `publishing::landing::generate_landing` called in `create_landing` at line 166 |
| `publishing/landing.rs`       | `publishing/detect.rs`            | Imports `ProjectInfo` from detect                  | WIRED    | `use super::detect::ProjectInfo;` at line 14                    |
| `commands/app.rs`             | manifest + landing (both)         | `AppCommand::Build` calls `build_all()`            | WIRED    | Both `generate_manifest` and `generate_landing` called in `build_all` at lines 195-201 |
| `main.rs`                     | `publishing/`                     | `mod publishing;` module declaration               | WIRED    | Line 12 of main.rs declares `mod publishing;`                   |

### Requirements Coverage

| Requirement | Source Plan | Description                                                                           | Status    | Evidence                                                                                   |
|-------------|-------------|---------------------------------------------------------------------------------------|-----------|--------------------------------------------------------------------------------------------|
| PUBL-01     | 18-01-PLAN  | `cargo pmcp manifest` generates ChatGPT-compatible JSON with server URL and tool-to-widget mapping | SATISFIED | `cargo pmcp app manifest --url URL` produces manifest.json; 30 unit tests in detect + manifest pass |
| PUBL-02     | 18-02-PLAN  | `cargo pmcp landing` generates standalone HTML demo page with mock bridge (no server required) | SATISFIED | `cargo pmcp app landing` produces self-contained landing.html with iframe srcdoc and mock bridge |

No orphaned requirements: PUBL-01 and PUBL-02 are the only phase-18 requirements in REQUIREMENTS.md.

Note: PUBL-03, PUBL-04, PUBL-05 are in REQUIREMENTS.md but mapped to future phases — not claimed by any phase-18 plan.

### Anti-Patterns Found

| File                                           | Line | Pattern       | Severity | Impact                                         |
|------------------------------------------------|------|---------------|----------|------------------------------------------------|
| `cargo-pmcp/src/templates/mcp_app.rs`          | 399  | `placeholder` | Info     | HTML input attribute (not a code stub), harmless |

No substantive anti-patterns found. The single match is an HTML `placeholder=""` attribute in a template string, not a TODO or stub.

### Build and Quality Status

- **Build:** `cargo build -p cargo-pmcp` succeeds; no errors
- **Build warnings in phase-18 files:** None (existing warning in `deployment/auth.rs` predates this phase)
- **Tests:** 43 publishing tests pass (11 detect, 14 manifest, 13 landing, 5 write helpers); 10 mcp_app template tests pass
- **Commits verified:** f89fafa, 0d27304, 3f6b9a0, 30446e1 all present in git log
- **cargo fmt:** Passes with no formatting violations

### Human Verification Required

#### 1. Landing page renders widget in browser

**Test:** Run `cargo pmcp app new test-demo && cd test-demo && cargo pmcp app landing` to generate `dist/landing.html`, then open the file in a browser.
**Expected:** Widget renders inside an iframe with product-showcase styling; clicking "Say Hello" calls the mock bridge and displays "Hello, World!" from mock data.
**Why human:** Browser rendering and iframe srcdoc behavior cannot be verified programmatically.

#### 2. Manifest JSON accepted by ChatGPT App Directory

**Test:** Submit the generated `dist/manifest.json` to the ChatGPT App Directory submission flow.
**Expected:** The manifest validates against the ai-plugin.json schema and the submission succeeds.
**Why human:** Requires live external service interaction; schema acceptance is gated by ChatGPT's live validator.

## Gaps Summary

No gaps. All 10 observable truths are verified. All 6 required artifacts exist, are substantive, and are wired. Both requirement IDs (PUBL-01, PUBL-02) are satisfied with evidence. No blocker anti-patterns exist.

The phase goal is fully achieved: a developer can run `cargo pmcp app manifest --url <URL>` to generate a ChatGPT-compatible manifest.json and `cargo pmcp app landing` to produce a self-contained shareable demo HTML page, all from their MCP Apps project.

---

_Verified: 2026-02-26T18:15:00Z_
_Verifier: Claude (gsd-verifier)_
