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v0.9.0 - April 16, 2026

Release v0.9.0 - 2026-04-16

Highlights

  • Added Enzan smart-routing controls so API clients can configure model routing by prompt complexity.
  • Added realized routing savings reporting for Enzan, including routed-query counts and estimated savings totals.
  • Updated the public SDKs and MCP server to support the new routing and savings endpoints.

Product Changes

Enzan

  • Added per-user smart-routing configuration for Akuma-backed Enzan requests, including independent simple, moderate, and complex prompt tiers.
  • Added routing metadata tracking so realized savings can be measured from actual routed usage instead of inferred estimates alone.

API Changes

  • Added:
    • GET /v1/enzan/routing
    • POST /v1/enzan/routing
    • GET /v1/enzan/routing/savings
  • Changed:
    • Enzan usage tracking now persists routing metadata used to calculate realized savings and routed-query counts.

SDK + MCP Changes

TypeScript SDK

  • Added typed Enzan routing configuration and routing savings methods.

Python SDK

  • Added Enzan routing configuration and routing savings service methods and models.

Go SDK

  • Added Enzan routing configuration and routing savings client methods and types.

MCP Server

  • Added Enzan routing tools for reading routing config, updating routing config, and viewing routing savings.

Migration Notes

  • Smart-routing settings and savings reporting require the new database schema included with this release. During rollout, the API remains backward-compatible with partially migrated usage-event schemas.

Documentation Updates

  • Updated the public API docs, SDK docs, and MCP docs for the new Enzan smart-routing endpoints and savings response shapes.