# MCP Phase 3 Implementation Summary

**Date**: November 3, 2025
**Status**: Complete

## Overview

Successfully implemented Phase 3 of the MCP Modernization Roadmap, adding support for Resources and Prompts using a modular, registry-based architecture.

## Key Components Implemented

### 1. Prompt System

- **Registry**: `src/server/prompt-handler.ts` - Manages prompt handlers.
- **Interface**: `PromptHandler` - Standard interface for prompt implementations.
- **Handlers**:
  - `LegalAssistantPromptHandler` (`src/prompts/legal-assistant.ts`) - Sets up a legal research assistant context.
  - `SummarizeStatutePromptHandler` (`src/prompts/legal-prompts.ts`)
  - `ComparePrecedentsPromptHandler` (`src/prompts/legal-prompts.ts`)
  - `AnalyzeCasePromptHandler` (`src/prompts/legal-prompts.ts`)
  - `DraftBriefSectionPromptHandler` (`src/prompts/legal-prompts.ts`)
  - `IdentifyIssuesPromptHandler` (`src/prompts/legal-prompts.ts`)
- **Server Integration**: Updated `BestPracticeLegalMCPServer` to handle `prompts/list` and `prompts/get`.

### 2. Resource System

- **Registry**: `src/server/resource-handler.ts` (Existing)
- **Handlers**:
  - `SchemaResourceHandler` (`src/resources/schema.ts`) - Exposes JSON schemas for CourtListener data models.
  - `OpinionResourceHandler` (`src/resources/opinion.ts`) (Existing)
- **Server Integration**: Updated `BestPracticeLegalMCPServer` to handle `resources/list` and `resources/read`.

### 3. Infrastructure

- **Bootstrap**: Updated `src/infrastructure/bootstrap.ts` to register the new registries and handlers.
- **Cleanup**: Removed obsolete provider files (`src/prompts/prompt-provider.ts`, `src/resources/resource-provider.ts`, `src/resources/schema-provider.ts`).

## Verification

- **Build**: `npm run build` passes successfully.
- **Architecture**: Aligns with the `ToolHandler` pattern for consistency.

## Next Steps

- Proceed to Phase 4 (Sampling Capabilities) or Phase 5 (Testing & Validation).
