# EATP Implementation Plan: Executive Summary

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

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## Purpose

This document series outlines the implementation plan for the Enterprise Agent Trust Protocol (EATP) within the Kailash Kaizen framework. EATP addresses the fundamental gap in enterprise AI agent adoption: **trust**.

## The Problem

Current Kaizen framework solves:
- **Communication**: A2A-compatible multi-agent patterns
- **Tool Access**: MCP integration for external tools

But cannot answer:
- Who authorized this agent to exist?
- What constraints govern its actions?
- Who is accountable when it fails?
- How do we audit its decisions?

## The Solution

EATP provides a **Trust Lineage Chain** - a cryptographically verifiable sequence answering:

> "Given Agent A attempting Action X on Resource R, why should I permit this?"

## First Principles (From Whitepaper)

| Principle | Implication |
|-----------|-------------|
| **FP1**: Trust is the fundamental barrier | Solution must directly address trust |
| **FP2**: Legacy systems have embedded trust | Solution must inherit, not replace, existing trust |
| **FP3**: Value drives adoption | Solution must deliver value incrementally |

## Protocol Compliance Prerequisites

Before implementing EATP, we must ensure A2A and MCP compliance:

### A2A Status: REQUIRES ENHANCEMENT

**Current State**: In-process coordination only (ADR-067)

**Required for EATP**:
- [ ] HTTP service exposing Agent Cards at `/.well-known/agent.json`
- [ ] JSON-RPC 2.0 message format
- [ ] `trust_lineage` field in Agent Cards (EATP extension)
- [ ] Distributed agent communication capability

### MCP Status: COMPLIANT (Partial)

**Current State**: Functional MCP server with 12 tools

**Required for EATP**:
- [ ] Trust verification before tool invocation
- [ ] Audit anchors for tool calls
- [x] Tool discovery and execution
- [x] Stdio transport
- [x] Security features (SSRF protection, timeouts)

## Implementation Phases

### Phase 1: A2A/MCP Compliance + Single Agent Trust (4 weeks)
- Complete A2A HTTP service layer
- Implement Trust Lineage Chain core
- TrustedAgent base class
- ESTABLISH and VERIFY operations

### Phase 2: Agent Collaboration Trust (3 weeks)
- DELEGATE operation
- OrchestrationRuntime integration
- Trust-aware pipeline patterns

### Phase 3: Enterprise Trust Fabric (4 weeks)
- OrganizationalAuthorityRegistry
- ESA (Enterprise System Agent) pattern
- Full audit anchor chain
- A2A Agent Card trust_lineage integration

## Key Deliverables

| Phase | Deliverable | Value |
|-------|-------------|-------|
| 1 | `kaizen.trust` module | Provable agent authorization |
| 1 | A2A HTTP service | External agent discovery |
| 2 | Trust-aware orchestration | Verified agent collaboration |
| 3 | ESA pattern | Legacy system trust inheritance |

## Document Index

| File | Contents |
|------|----------|
| `00-executive-summary.md` | This document |
| `01-protocol-compliance-gaps.md` | A2A/MCP gap analysis |
| `02-trust-lineage-chain-design.md` | Core EATP data structures |
| `03-trust-operations.md` | ESTABLISH, DELEGATE, VERIFY, AUDIT |
| `04-trusted-agent-integration.md` | BaseAgent enhancement |
| `05-a2a-http-service.md` | Agent Card HTTP endpoints |
| `06-orchestration-integration.md` | Runtime trust verification |
| `07-esa-pattern.md` | Enterprise System Agent design |
| `08-testing-strategy.md` | Comprehensive test plan |
| `09-phased-implementation.md` | Detailed phase breakdown |

## Success Criteria

1. **Phase 1 Complete**: Single agent with verifiable trust chain
2. **Phase 2 Complete**: Multi-agent pipeline with trust verification
3. **Phase 3 Complete**: Enterprise-ready trust fabric with legacy integration

## Risk Mitigation

| Risk | Mitigation |
|------|------------|
| A2A changes break existing workflows | Maintain in-process mode alongside HTTP |
| Cryptographic overhead | Lazy verification, caching |
| Legacy integration complexity | Incremental ESA adoption |
