# Aperion Component Integration Readiness Assessment

> **Generated**: 2026-02-08
> **Status**: Pre-Integration Analysis

## Executive Summary

| Component | Package Installed | Tests Pass | Client SDK | Integration Ready |
|-----------|------------------|------------|------------|-------------------|
| **aperion-state-gateway** (Cortex) | :x: | :warning: Unknown | :x: None | :red_circle: **NOT READY** |
| **aperion-llm-router** (Switchboard) | :x: | :warning: Unknown | :x: None | :red_circle: **NOT READY** |
| **aperion-event-bus** (Nervous System) | :x: | :warning: Import Error | :white_check_mark: Library | :yellow_circle: **PROTOCOL GAP** |
| **aperion-gatekeeper** (Immune System) | :x: | :warning: Import Error | :white_check_mark: Library | :yellow_circle: **INCOMPLETE** |
| **aperion-flow** (Conductor) | :x: | :warning: Unknown | :white_check_mark: Library | :yellow_circle: **NEEDS ADAPTERS** |
| **aperion-fsal** (Iron Vault) | :x: | :warning: Unknown | :x: REST only | :yellow_circle: **READY (HTTP)** |
| **aperion-doc-index** (Archivist) | :x: | :warning: Unknown | :white_check_mark: CortexClient | :green_circle: **READY** |
| **ParseGate** (Iron Dome) | :white_check_mark: | :white_check_mark: | :white_check_mark: Library | :green_circle: **READY** |

---

## Critical Gaps

### 1. No Packages Installed (Except ParseGate)

All projects except ParseGate fail to run tests because they're not installed in editable mode:

```bash
ModuleNotFoundError: No module named 'event_bus'
ModuleNotFoundError: No module named 'gatekeeper'
```

**Required Fix**: Each project needs `pip install -e .` in its virtualenv.

---

### 2. Protocol Mismatch: Event Bus ↔ Flow

The `aperion-flow` component defines this integration contract:

```python
# In aperion-flow/src/flow/engine/executor.py
class EventEmitter(Protocol):
    async def emit(self, event_type: str, payload: dict, ...) -> str:
        ...  # ASYNC method expected
```

But `aperion-event-bus` provides:

```python
# In aperion-event-bus/src/event_bus/bus.py
def emit(self, event_type: str, payload: dict, ...) -> str:
    ...  # SYNC method - incompatible!
```

**Impact**: Flow cannot directly use EventBus without an adapter.

**Required Fix**: Either:
- Add `async def emit_async()` method to EventBus, or
- Create an async wrapper adapter

---

### 3. Missing Client SDKs

| Service | Port | Client SDK Status |
|---------|------|-------------------|
| **Cortex** (state-gateway) | 4949 | :x: Only REST API, no Python client |
| **Switchboard** (llm-router) | 8080 | :x: Only REST API, no Python client |
| **FSAL** (Iron Vault) | 4848 | :x: Only REST API, no Python client |

Note: `aperion-doc-index` has `AsyncCortexClient` but it's local to that project, not in Cortex itself.

**Required Fix**: Create shared client libraries in each service package.

---

### 4. Gatekeeper Migration Incomplete

The README explicitly states:

```markdown
### Phase 1B: Integration (TODO)
- [ ] Migrate FSAL to use `get_current_subject`
- [ ] Migrate Cortex to use `get_current_subject`
- [ ] Replace direct HMAC validation with `AuthenticationEngine`
```

**Impact**: FSAL and Cortex still have their own auth implementations, not unified.

---

### 5. No Cross-Component Integration Tests

Each project has unit tests, but there are no tests verifying:
- Cortex ↔ Archivist communication
- Flow ↔ EventBus event emission
- Gatekeeper ↔ FSAL auth middleware
- Switchboard ↔ Flow LLM assistance

---

## Component Details

### aperion-state-gateway (The Cortex) — Port 4949

**Status**: :red_circle: NOT INTEGRATION READY

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | 15+ Python files |
| Public API | :x: Minimal | Only `__version__` exported |
| Client SDK | :x: Missing | Archivist has its own CortexClient |
| Tests | :warning: 3 files | Not runnable (not installed) |
| Documentation | :white_check_mark: Good | Clear REST API docs |

**Gaps**:
1. No Python client library for other components
2. Package not exported properly (`__all__` only has version)

---

### aperion-llm-router (The Switchboard) — Port 8080

**Status**: :red_circle: NOT INTEGRATION READY

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | Multi-provider support (OpenAI, Gemini, Workers AI) |
| Public API | :x: Minimal | Only `__version__` exported |
| Client SDK | :x: Missing | No Python client |
| Tests | :warning: 9 files | Not runnable (not installed) |
| Constitution | :white_check_mark: A6 Fail-Closed | Enforced |

**Gaps**:
1. No Python client library
2. Flow's `LLMAssistant` protocol not implemented

---

### aperion-event-bus (The Nervous System) — Library

**Status**: :yellow_circle: PROTOCOL MISMATCH

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | Zero dependencies in core! |
| Public API | :white_check_mark: Rich | 40+ exports |
| Dependencies | :white_check_mark: None | Standalone library |
| Tests | :warning: 7 files | Import error (not installed) |
| Features | :white_check_mark: Production-ready | PII redaction, correlation IDs, DLQ |

**Gaps**:
1. `emit()` is sync, Flow expects async `emit()`
2. No async adapter provided

---

### aperion-gatekeeper (The Immune System) — Library

**Status**: :yellow_circle: INCOMPLETE MIGRATION

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | KeyManager, PolicyEngine, FastAPI middleware |
| Public API | :white_check_mark: Good | Core types exported |
| FastAPI | :white_check_mark: Middleware | `get_current_subject`, `require_permission` |
| Tests | :warning: 9 files | Import error (not installed) |

**Gaps**:
1. Phase 1B migration incomplete (FSAL, Cortex not migrated)
2. No integration with other components yet

---

### aperion-flow (The Conductor) — Port 8001

**Status**: :yellow_circle: NEEDS ADAPTERS

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | Pipeline executor, recovery, checkpoints |
| Public API | :white_check_mark: Good | Pipeline, Executor, Context exported |
| Integration | :warning: Protocols only | EventEmitter, LLMAssistant, CheckpointStore |
| Tests | :warning: 4 files | Not runnable (not installed) |

**Gaps**:
1. No concrete implementations of integration protocols
2. EventBus adapter needed for async emit
3. Switchboard adapter needed for LLMAssistant

---

### aperion-fsal (The Iron Vault) — Port 4848

**Status**: :yellow_circle: READY (HTTP Integration Only)

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | Atomic writes, sandbox, auth |
| Public API | :white_check_mark: Rich | Core ops + models exported |
| Security | :white_check_mark: Strong | Path traversal prevention, atomic ops |
| Tests | :warning: 8 files | Not runnable (not installed) |

**Gaps**:
1. No Python client SDK (HTTP-only)
2. Not migrated to Gatekeeper auth

---

### aperion-doc-index (The Archivist) — CLI + Library

**Status**: :green_circle: INTEGRATION READY

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | Validation, linking, staleness |
| Public API | :white_check_mark: Good | High-level functions + classes |
| CLI | :white_check_mark: Complete | `archivist check`, `stale`, `index` |
| Cortex Client | :white_check_mark: AsyncCortexClient | Connection pooling, retries |
| Tests | :warning: 11 files | Not runnable (not installed) |

**Best-in-class for integration** — has working async Cortex client.

---

### ParseGate (The Iron Dome) — Library

**Status**: :green_circle: INTEGRATION READY

| Aspect | Status | Notes |
|--------|--------|-------|
| Source code | :white_check_mark: Complete | Validation, repair, coercion |
| Public API | :white_check_mark: Very rich | 50+ exports |
| Installed | :white_check_mark: YES | Only project properly installed |
| Tests | :white_check_mark: 19 files | Likely runnable |

**Best state** — fully standalone, properly installed.

---

## Recommended Actions

### Immediate (Before Integration)

1. **Install all packages in editable mode**:
   ```bash
   for proj in aperion-state-gateway aperion-llm-router aperion-event-bus \
               aperion-gatekeeper aperion-flow aperion-fsal aperion-doc-index; do
     cd /home/dreamboat/projects/$proj && pip install -e ".[dev]"
   done
   ```

2. **Add async emit to EventBus**:
   ```python
   async def emit_async(self, event_type: str, payload: dict, ...) -> str:
       """Async version of emit for async contexts."""
       return await asyncio.to_thread(self.emit, event_type, payload, ...)
   ```

3. **Create shared client SDKs** for:
   - `aperion-cortex-client` (extract from Archivist)
   - `aperion-switchboard-client`
   - `aperion-fsal-client`

### Short-term

4. **Complete Gatekeeper Phase 1B** — migrate FSAL and Cortex auth

5. **Add integration test suite** that verifies:
   - Archivist → Cortex vector push
   - Flow → EventBus event emission
   - Flow → Switchboard LLM calls

### Structural

6. **Consider monorepo** for shared types/protocols to ensure contract consistency

---

## Architecture Overview

```
┌─────────────────────────────────────────────────────────────────────────┐
│                           APERION ECOSYSTEM                              │
├─────────────────────────────────────────────────────────────────────────┤
│                                                                          │
│  ┌──────────────┐    ┌──────────────┐    ┌──────────────┐               │
│  │   ParseGate  │    │   Archivist  │    │     Flow     │               │
│  │  (Iron Dome) │    │  (Archivist) │    │  (Conductor) │               │
│  │   Library    │    │   CLI/Lib    │    │   Port 8001  │               │
│  └──────┬───────┘    └──────┬───────┘    └──────┬───────┘               │
│         │                   │                   │                        │
│         │                   │  ┌────────────────┤                        │
│         │                   │  │                │                        │
│         ▼                   ▼  ▼                ▼                        │
│  ┌──────────────┐    ┌──────────────┐    ┌──────────────┐               │
│  │  Switchboard │    │    Cortex    │    │  Event Bus   │               │
│  │ (LLM Router) │    │   (Memory)   │    │  (Nervous)   │               │
│  │   Port 8080  │    │   Port 4949  │    │   Library    │               │
│  └──────────────┘    └──────────────┘    └──────────────┘               │
│                                                                          │
│  ┌──────────────┐    ┌──────────────┐                                   │
│  │  Gatekeeper  │───▶│     FSAL     │                                   │
│  │   (Auth)     │    │ (Iron Vault) │                                   │
│  │   Library    │    │   Port 4848  │                                   │
│  └──────────────┘    └──────────────┘                                   │
│                                                                          │
└─────────────────────────────────────────────────────────────────────────┘
```

---

## Constitution Compliance

| Component | D1 Correlation | D2 Event Naming | B1 Secrets | B3 Sandbox |
|-----------|----------------|-----------------|------------|------------|
| Cortex | :white_check_mark: | N/A | :white_check_mark: | N/A |
| Switchboard | :white_check_mark: | N/A | :white_check_mark: | N/A |
| Event Bus | :white_check_mark: | :white_check_mark: | N/A | N/A |
| Gatekeeper | :white_check_mark: | N/A | :white_check_mark: | N/A |
| Flow | :white_check_mark: | :white_check_mark: | :white_check_mark: | N/A |
| FSAL | N/A | N/A | :white_check_mark: | :white_check_mark: |
| Archivist | :white_check_mark: | N/A | :white_check_mark: | N/A |
| ParseGate | :white_check_mark: | N/A | N/A | N/A |

---

## Version Matrix

| Component | Version | Python | Status |
|-----------|---------|--------|--------|
| aperion-cortex | 0.1.0 | >=3.11 | Alpha |
| aperion-switchboard | 0.1.0 | >=3.11 | Beta |
| aperion-event-bus | 0.2.0 | >=3.11 | Beta |
| aperion-gatekeeper | 0.1.0 | >=3.11 | Alpha |
| aperion-flow | 0.1.0 | >=3.11 | Alpha |
| aperion-fsal | 1.2.0 | >=3.11 | Beta |
| archivist | 0.1.0 | >=3.11 | Beta |
| parsegate | 0.1.0 | >=3.10 | Alpha |

---

*Document generated by integration readiness analysis.*
