v1.1.0

Changed

• BREAKING: Minimum Node.js version increased from 18 to 20
• Migrated from console-based tests to Vitest 4.x framework
• Improved test coverage: FPEService to 97.4%, AuthService to 100%
• Reorganized test structure with 69 comprehensive tests
• Moved old console tests to examples/ as client interaction demos
• Enhanced HTTP server test reliability with sequential file execution

Added

• /version endpoint on HTTP server returning name, version, node version, and uptime
• Comprehensive error handling tests for edge cases
• Client examples showing how to interact with both stdio and HTTP servers
• Proper TypeScript typing throughout (removed all any types)

Updated

• zod: 3.25.76 → 4.3.5 (major version upgrade)
• @modelcontextprotocol/sdk: 1.21.1 → 1.25.2
• vitest: 3.2.4 → 4.0.17
• @vitest/coverage-v8: 3.2.4 → 4.0.17
• typescript: 5.8.3 → 5.9.3
• Various other dependency updates

Security

• Resolved all 8 Dependabot security alerts through dependency updates

v1.0.1 - Maintenance Release

v1.0.1 - Maintenance Release

Fixed

• Security vulnerabilities in Vite development dependencies
• SonarCloud CI integration for Dependabot PRs
• Code coverage analysis configuration

Improved

• Added SonarCloud quality gate badge to README
• Updated dependencies (@modelcontextprotocol/sdk 1.18.0)
• Enhanced CI/CD pipeline reliability

FPE Demo MCP v1.0.0 — FF3 Encryption Demo

An open-source MCP server demonstrating Format Preserving Encryption with FF3.

Shows how MCP servers can assist in data protection workflows — encrypt sensitive data like SSNs and phone numbers while preserving
their format.

✨ What's Included

🎯 MCP Protocol Demo

• Works with Claude Desktop, Claude Code, ChatGPT, and any MCP-compatible client
• Both stdio (local) and HTTP (web/cloud) transports

🔒 FF3 Encryption Example

• Format Preserving Encryption (radix-10, 6-56 digits)
• Multiple authentication modes for different use cases
• JWT + shared secret authentication patterns

⚡ Easy Testing

• One-click DigitalOcean deployment for web testing
• Container-ready with health endpoints
• Stateful HTTP sessions

🚀 Quick Start

Local demo:
npm install && npm start

Web demo:
https://cloud.digitalocean.com/apps/new?repo=https://github.com/Horizon-Digital-Engineering/fpe-demo-mcp/tree/main

💡 Demo Usage

Input: "123-45-6789"Encrypted: "ENC_FPE:096616337"Decrypted: "123456789"

Great for exploring how AI assistants can work with encrypted data!

📋 Features

• ✅ Real FF3 cryptography implementation
• ✅ Complete test suite and examples
• ✅ Comprehensive documentation
• ✅ Business Source License 1.1

🎯 Good For

• Learning MCP server development
• Exploring data protection patterns with AI
• Testing encryption workflows
• Demos and proof-of-concepts

https://github.com/Horizon-Digital-Engineering/fpe-demo-mcp#readme