Changelog

All notable changes to this project are documented below.

Unreleased

Added

• UCP alignment with Universal Commerce Protocol
• @guardrail-sim/ucp-types package with discount and checkout types
• @guardrail-sim/insights package with policy health checks
• UCP-aligned MCP tools: validate_discount_code, simulate_checkout_discount
• Interactive policy playground in documentation site
• ADR-002: UCP Protocol Alignment

Changed

• MCP server now exposes 5 tools (was 1)
• Updated documentation to match actual API

v0.0.1 (December 2025)

Added

• Initial policy engine implementation with json-rules-engine
• MCP server with evaluate_policy tool
• Default policy with rules:
  • margin_floor - 15% minimum margin
  • max_discount - 25% maximum discount
  • volume_tier - Volume-based limits
• get_policy_summary and get_max_discount MCP tools
• Documentation website with Fumadocs
• ADR-001: Policy Engine Library selection

Technical

• pnpm monorepo structure
• TypeScript strict mode throughout
• ESLint + Prettier configuration
• Husky pre-commit hooks
• Conventional commits with commitlint
• 76 passing tests across all packages