Changelog

6 flagship apps: Proxy, Observe, Trust, Studio, Forge, Exchange

69 REST API endpoints across all apps

Embedded web console at /ui with full dashboard

16 LLM providers auto-configured from environment variables

SQLite storage — zero external dependencies

58 middleware modules across 8 categories (routing, caching, cost, safety, transform, validate, observe, shims)

Runtime module toggling via API

Multi-provider failover with circuit breaker

Bring-your-own-key (BYOK) with auto-detection from key prefix

Anthropic and Gemini SDK shims (anthrofit, geminishim)

Automatic trace recording for every proxy request

Cost tracking and time-series analytics

Configurable alerts with threshold and anomaly detection

Hash-chained audit ledger — tamper-evident by design

Content policies with block, warn, and log actions

Integrity verification endpoint

Versioned prompt templates with variable interpolation

A/B experiments across models

Multi-model benchmarking with eval methods

DAG workflow engine with dependency-ordered step execution

Template variable interpolation between steps

13 config packs: safety-essentials, cost-control, openai-quickstart, multi-provider-failover, and more

One-click install/uninstall via API

Multi-user system with per-user API keys (sk-sy-*)

Per-user provider key management

Admin key protection for management API

Marketing site with interactive playground

Full API documentation

Fence Rail brand identity and logo system

Community, Pro, Cloud, and Enterprise pricing tiers