Release v0.5.0 - 2026-03-21

Highlights

• Enzan now provides rule-based optimization recommendations with monthly spend, potential savings, and an efficiency score.
• Public SDKs and the MCP server now expose the Enzan optimize workflow end to end.
• Optimizer responses now return a consistent empty recommendations list when no savings actions are available.

Product Changes

Enzan

• Added a rule-based optimizer that evaluates model downgrades, duplicate caching opportunities, self-host break-even signals, spend anomalies, and cross-provider price arbitrage.
• Optimize amounts are normalized to a 30-day monthly basis so different windows can be compared consistently.
• Potential savings and efficiency score are heuristic outputs; overlapping opportunities can make actual realizable savings lower than the estimate.

API Changes

• Added:
  • POST /v1/enzan/optimize

SDK + MCP Changes

TypeScript SDK

• Added enzan.optimize(...) for optimizer recommendations.

Python SDK

• Added enzan.optimize(...) for optimizer recommendations.

Go SDK

• Added Enzan.Optimize(...) for optimizer recommendations.

MCP Server

• Added enzan.optimize.

Migration Notes

• No database migration is required for the optimizer endpoint.
• Existing pricing catalogs and usage analytics data are used as-is.

Documentation Updates

• Updated the public API docs, SDK references, and MCP docs for the optimizer workflow.