# EATP Implementation Plan: Phased Implementation

## Document Control
- **Version**: 1.0
- **Date**: 2025-12-15
- **Status**: Planning
- **Author**: Kaizen Framework Team

---

## Overview

This document provides the detailed phased implementation plan for EATP, breaking down the work into manageable sprints with clear deliverables and success criteria.

---

## Phase Summary

| Phase | Focus | Duration | Key Deliverable |
|-------|-------|----------|-----------------|
| **Phase 1** | Foundation + Single Agent | 4 weeks | TrustedAgent, Core Operations |
| **Phase 2** | Multi-Agent Trust | 3 weeks | Orchestration Integration |
| **Phase 3** | Enterprise Features | 4 weeks | ESA, A2A HTTP, Full Fabric |

---

## Phase 1: Foundation + Single Agent Trust

### Week 1: Core Data Structures

#### Objectives
- Implement Trust Lineage Chain data structures
- Create cryptographic utilities
- Setup database schema

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `GenesisRecord` dataclass | P0 | 2 |
| Implement `CapabilityAttestation` dataclass | P0 | 2 |
| Implement `DelegationRecord` dataclass | P0 | 2 |
| Implement `ConstraintEnvelope` dataclass | P0 | 3 |
| Implement `AuditAnchor` dataclass | P0 | 2 |
| Implement `TrustLineageChain` class | P0 | 4 |
| Create Ed25519 signing utilities | P0 | 4 |
| Create database schema migrations | P0 | 4 |
| Write Tier 1 unit tests | P0 | 8 |

#### Deliverables
- `kaizen/trust/chain.py` - All data structures
- `kaizen/trust/crypto.py` - Cryptographic utilities
- `migrations/eatp_001_initial.py` - Database schema
- 95%+ test coverage for data structures

#### Success Criteria
- All data structures serialize/deserialize correctly
- Cryptographic operations pass validation tests
- Database schema applies cleanly

---

### Week 2: Trust Operations (ESTABLISH, VERIFY)

#### Objectives
- Implement ESTABLISH operation
- Implement VERIFY operation
- Create trust store

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `TrustStore` interface | P0 | 3 |
| Implement `PostgresTrustStore` | P0 | 6 |
| Implement `OrganizationalAuthorityRegistry` | P0 | 4 |
| Implement `TrustOperations.establish()` | P0 | 6 |
| Implement `TrustOperations.verify()` | P0 | 6 |
| Implement verification levels (QUICK/STANDARD/FULL) | P0 | 4 |
| Write Tier 2 integration tests | P0 | 8 |

#### Deliverables
- `kaizen/trust/operations.py` - Core operations
- `kaizen/trust/store.py` - Trust storage
- `kaizen/trust/registry.py` - Authority registry
- Integration tests passing with real PostgreSQL

#### Success Criteria
- ESTABLISH creates valid trust chain
- VERIFY correctly validates trust
- All signature verifications work

---

### Week 3: Trust Operations (DELEGATE, AUDIT)

#### Objectives
- Implement DELEGATE operation
- Implement AUDIT operation
- Create audit store

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `TrustOperations.delegate()` | P0 | 6 |
| Implement constraint tightening validation | P0 | 4 |
| Implement `AuditStore` interface | P0 | 3 |
| Implement `PostgresAuditStore` | P0 | 5 |
| Implement `TrustOperations.audit()` | P0 | 4 |
| Implement audit query API | P1 | 4 |
| Write Tier 2 integration tests | P0 | 8 |

#### Deliverables
- Complete `TrustOperations` class
- `kaizen/trust/audit.py` - Audit storage and queries
- Full integration test suite

#### Success Criteria
- DELEGATE correctly constrains capabilities
- Constraint loosening is prevented
- All actions create audit anchors
- Audit queries return correct results

---

### Week 4: TrustedAgent Integration

#### Objectives
- Create TrustedAgent class
- Integrate with BaseAgent
- End-to-end single agent trust

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `TrustedAgent` base class | P0 | 8 |
| Override `run()` with trust verification | P0 | 4 |
| Override `call_tool()` with trust verification | P0 | 4 |
| Implement audit context manager | P0 | 3 |
| Create `TrustedSupervisorAgent` | P1 | 4 |
| Create `TrustedWorkerAgent` | P1 | 4 |
| Write Tier 3 E2E tests | P0 | 8 |
| Write Phase 1 documentation | P0 | 4 |

#### Deliverables
- `kaizen/trust/agent.py` - TrustedAgent classes
- Complete E2E test suite for single agent
- Phase 1 documentation

#### Success Criteria
- Single agent with full trust chain works
- All actions verified before execution
- All actions audited after execution
- Documentation complete

---

## Phase 2: Multi-Agent Trust

### Week 5: Orchestration Integration (Part 1)

#### Objectives
- Create TrustAwareOrchestrationRuntime
- Implement trust-aware Sequential pattern
- Implement trust-aware Parallel pattern

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `TrustAwareOrchestrationRuntime` | P0 | 8 |
| Implement `TrustExecutionContext` | P0 | 4 |
| Implement `TrustAwareSequentialExecutor` | P0 | 6 |
| Implement `TrustAwareParallelExecutor` | P0 | 6 |
| Create delegation chain tracking | P0 | 4 |
| Write integration tests | P0 | 8 |

#### Deliverables
- `kaizen/orchestration/trust_runtime.py`
- Sequential and Parallel patterns with trust
- Integration tests

#### Success Criteria
- Multi-agent sequential workflow with trust
- Multi-agent parallel workflow with trust
- Delegation chains properly tracked

---

### Week 6: Orchestration Integration (Part 2)

#### Objectives
- Implement remaining orchestration patterns
- Create TrustAwareAgentRegistry

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `TrustAwareSupervisorWorkerExecutor` | P0 | 6 |
| Implement `TrustAwareRouterExecutor` | P0 | 6 |
| Implement `TrustAwareEnsembleExecutor` | P1 | 5 |
| Implement `TrustAwareBlackboardExecutor` | P1 | 6 |
| Implement `TrustAwareAgentRegistry` | P0 | 5 |
| Write integration tests | P0 | 8 |

#### Deliverables
- All orchestration patterns with trust
- Trust-aware agent registry
- Comprehensive integration tests

#### Success Criteria
- All 9 patterns work with trust
- Agent registry manages trust chains
- Capability-based agent selection works

---

### Week 7: Trust-Aware Workflows

#### Objectives
- Create TrustAwareWorkflowBuilder
- Implement workflow validation
- E2E multi-agent tests

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `TrustAwareWorkflowBuilder` | P0 | 6 |
| Implement workflow trust validation | P0 | 5 |
| Create workflow trust report | P1 | 4 |
| Write E2E tests for all patterns | P0 | 10 |
| Write Phase 2 documentation | P0 | 6 |
| Performance optimization | P1 | 4 |

#### Deliverables
- `kaizen/orchestration/trust_workflow.py`
- Complete E2E test suite for multi-agent
- Phase 2 documentation
- Performance benchmarks

#### Success Criteria
- Complex multi-agent workflows with trust
- Trust violations detected at workflow build time
- Documentation complete
- Performance targets met

---

## Phase 3: Enterprise Features

### Week 8: A2A HTTP Service

#### Objectives
- Implement A2A HTTP service layer
- Agent Card generation with trust
- JSON-RPC 2.0 handler

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Create FastAPI A2A service | P0 | 8 |
| Implement Agent Card endpoint | P0 | 4 |
| Implement Agent Card generator with trust | P0 | 5 |
| Implement JSON-RPC 2.0 handler | P0 | 8 |
| Implement A2A authentication | P0 | 6 |
| Write integration tests | P0 | 8 |

#### Deliverables
- `kaizen/a2a/service.py`
- `kaizen/a2a/agent_card.py`
- `kaizen/a2a/jsonrpc.py`
- A2A integration tests

#### Success Criteria
- Agent Card at `/.well-known/agent.json`
- JSON-RPC 2.0 compliant messaging
- Trust lineage in Agent Cards
- Authentication working

---

### Week 9: A2A Trust Extensions

#### Objectives
- Implement EATP A2A extensions
- Cross-agent trust verification
- A2A task lifecycle with trust

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `trust.verify` JSON-RPC method | P0 | 4 |
| Implement `trust.delegate` JSON-RPC method | P0 | 5 |
| Implement `audit.query` JSON-RPC method | P1 | 4 |
| Implement A2A task manager | P0 | 6 |
| Implement cross-agent trust verification | P0 | 6 |
| Add audit anchors to A2A responses | P0 | 3 |
| Write E2E tests for A2A | P0 | 8 |

#### Deliverables
- Complete A2A EATP extensions
- Cross-agent trust verification
- E2E A2A tests

#### Success Criteria
- External agents can verify trust
- External agents can receive delegations
- Full audit trail for A2A interactions

---

### Week 10: ESA Pattern Implementation

#### Objectives
- Implement ESA base class
- Create DatabaseESA
- Create APIESA

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `EnterpriseSystemAgent` base | P0 | 8 |
| Implement capability discovery | P0 | 5 |
| Implement trust inheritance | P0 | 5 |
| Implement `DatabaseESA` | P0 | 6 |
| Implement `APIESA` | P1 | 5 |
| Implement `ESARegistry` | P0 | 4 |
| Write integration tests | P0 | 8 |

#### Deliverables
- `kaizen/trust/esa/` package
- DatabaseESA for PostgreSQL/MySQL
- APIESA for REST APIs
- ESA registry

#### Success Criteria
- ESAs inherit trust from legacy systems
- ESAs delegate trust to agents
- All access proxied and audited

---

### Week 11: Enterprise Integration

#### Objectives
- Create additional ESA types
- Security hardening
- Performance optimization

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Implement `AWSCloudESA` | P1 | 6 |
| Implement `LDAPùESA` | P2 | 5 |
| Implement credential rotation | P0 | 5 |
| Implement trust chain caching | P0 | 5 |
| Security audit and hardening | P0 | 8 |
| Performance benchmarking | P0 | 4 |
| Write E2E tests | P0 | 8 |

#### Deliverables
- Additional ESA types
- Security hardened codebase
- Performance optimized operations
- Comprehensive E2E tests

#### Success Criteria
- Cloud ESAs working
- No security vulnerabilities
- Performance targets met (VERIFY < 5ms)

---

### Week 12: Documentation and Polish

#### Objectives
- Complete documentation
- Create examples
- Final testing

#### Tasks

| Task | Priority | Estimated Hours |
|------|----------|-----------------|
| Write comprehensive API documentation | P0 | 8 |
| Create usage examples | P0 | 6 |
| Create migration guide | P0 | 4 |
| Write security best practices | P0 | 4 |
| Final E2E test pass | P0 | 6 |
| Bug fixes and polish | P0 | 8 |
| Release preparation | P0 | 4 |

#### Deliverables
- Complete documentation suite
- Example applications
- Migration guide
- Release package

#### Success Criteria
- All tests passing
- Documentation complete
- Examples working
- Ready for release

---

## Risk Mitigation

### Technical Risks

| Risk | Probability | Impact | Mitigation |
|------|-------------|--------|------------|
| Cryptographic complexity | Medium | High | Use well-tested libraries (PyNaCl) |
| Performance bottlenecks | Medium | Medium | Early benchmarking, caching |
| Integration complexity | High | Medium | Incremental integration, feature flags |

### Schedule Risks

| Risk | Probability | Impact | Mitigation |
|------|-------------|--------|------------|
| Scope creep | Medium | High | Strict phase boundaries |
| Testing delays | Medium | Medium | Test-first development |
| Documentation delays | High | Low | Document as we build |

---

## Success Metrics

### Phase 1 Success
- [ ] 100% of trust operations implemented
- [ ] 90%+ test coverage
- [ ] Single agent E2E working
- [ ] VERIFY < 10ms for QUICK level

### Phase 2 Success
- [ ] All 9 orchestration patterns with trust
- [ ] Complex workflows tested
- [ ] Multi-agent E2E working
- [ ] VERIFY < 50ms for STANDARD level

### Phase 3 Success
- [ ] A2A fully compliant with Google spec
- [ ] ESA pattern implemented
- [ ] Security audit passed
- [ ] Documentation complete
- [ ] Ready for production

---

## Resource Requirements

### Development
- 2 Senior Engineers (full-time)
- 1 Security Engineer (part-time, Weeks 9-11)

### Infrastructure
- PostgreSQL for trust store
- Redis for caching (optional)
- Docker Compose for testing

### Tools
- pytest + pytest-asyncio
- PyNaCl for cryptography
- FastAPI for A2A service
- aiohttp for A2A client

---

## Appendix: File Structure

```
kaizen/
├── trust/
│   ├── __init__.py
│   ├── chain.py           # Data structures
│   ├── crypto.py          # Cryptographic utilities
│   ├── operations.py      # ESTABLISH, DELEGATE, VERIFY, AUDIT
│   ├── store.py           # Trust storage
│   ├── audit.py           # Audit storage and queries
│   ├── registry.py        # Authority registry
│   ├── agent.py           # TrustedAgent classes
│   ├── exceptions.py      # Trust exceptions
│   └── esa/
│       ├── __init__.py
│       ├── base.py        # ESA base class
│       ├── database.py    # DatabaseESA
│       ├── api.py         # APIESA
│       ├── cloud.py       # CloudESA
│       └── registry.py    # ESA Registry
├── a2a/
│   ├── __init__.py
│   ├── service.py         # FastAPI A2A service
│   ├── agent_card.py      # Agent Card generation
│   ├── jsonrpc.py         # JSON-RPC handler
│   ├── auth.py            # A2A authentication
│   └── tasks.py           # Task lifecycle
└── orchestration/
    ├── trust_runtime.py   # TrustAwareOrchestrationRuntime
    ├── trust_workflow.py  # TrustAwareWorkflowBuilder
    └── patterns/
        └── trust_aware/   # Trust-aware pattern executors
```

---

## Next Steps

1. Create detailed todo list in `todos/active/`
2. Begin Phase 1, Week 1 implementation
3. Setup testing infrastructure
4. Create initial documentation structure
