Changelog

Release notes and improvements for AtlasBurn.

SDK v1.6.1 — June 2026

Streaming usage capture (I3) — the SDK and Edge Proxy now inject stream_options.include_usage: true on OpenAI streams so the final SSE frame carries real input/output token counts. Pre-I3 streamed calls logged $0; that bug is fixed.
Estimated-token flag — events without a usage frame are now flagged est/~est in the Forensic Ledger.
License — repackaged under Apache-2.0. See License.
Docs — withdrew the legacy 94.2% accuracy figure pending re-derivation against current invoices.
Forecasting — engine outputs documented as p5 / p50 / p95 + VaR95 / CVaR95; the spurious P99 reference was removed.

AtlasBurn Edge Proxy — new Cloudflare Worker integration. Zero code changes, native SSE streaming, fails open by design.
Autonomous Runtime Guardrails — server-side 5-layer defense engine replaces SDK-level Auto Kill:
- Layer 1 — Financial Limits (daily / monthly hard cap)
- Layer 2 — Dumb Loop Detector (identical token fingerprinting)
- Layer 3 — Smart Loop Detector (monotonic context inflation)
- Layer 4 — RPS Burst Protection (per-key frequency limits)
- Layer 5 — Premium Model Concentration (prompt-injection / hijacked routing detection)
Cloudflare KV Kill Switch — <5ms edge enforcement with TTL auto-recovery and manual dashboard override.
New API endpoints: POST /api/ingest (telemetry collection) and POST /api/guardrails/enforce (KV flag webhook).
OpenRouter auto-detect via the Edge Proxy. Layer 4 is the primary safety net due to tokenizer drift from upstream load-balancing.

Synchronous loop guards — added isRouting guard to prevent proxy recursion (RangeError: Maximum call stack size exceeded) in Next.js App Router
Universal Framework Support — initAtlasBurnAuto now survives arbitrary globalThis.fetch overrides by host frameworks (Next.js, Nuxt, SvelteKit)
Improved SSE stream chunk parsing for complex AI provider outputs (multi-chunk usage metadata, partial JSON frames)
Single-init integration via Next.js Instrumentation hook (instrumentation.ts)
Streaming and JSON responses captured automatically across Server Components and API Routes
Added Vertex AI auto-detect support alongside OpenAI, Anthropic, and Gemini
Deprecated route-level patching and custom fetch wrappers — safe to delete