SYSTEM ARCHITECTURE

Architecture, Security & API Reference

Hono.js proxy pipeline, circuit breaker lifecycle, and endpoints.

Core Subsystems

• RouteEngine: Deterministic candidate evaluator with LKGP, headroom, cache-affinity, and cost sorting.

• CircuitBreaker: 3-state state machine (CLOSED, OPEN, HALF_OPEN) with cooldown lockout.

• PromptCompressor: LexiPack multi-language rules and whitespace compaction saving 30-55% tokens.

• AdminStore: AES-256-GCM keystore and SHA-256 virtual key manager.

POST /v1/chat/completions — OpenAI-compatible chat proxy

POST /v1/messages — Anthropic Messages API proxy

GET /v1/models — Dynamic model catalog with pricing metadata

POST /v1/router/explain — Dry-run route explainability simulator

POST /v1/mcp — Built-in Model Context Protocol server

GET /health/live — Liveness probe and provider connectivity