Changelog

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New Capabilities

• Stage Authoring & Questmaker: Protocol authoring workflows guided by the Eva authoring assistant, first-frame scene generation, and private asset storage.
• In-Browser Stage Dive UI: Native interactive execution surface (/stage dive) with live session state, dynamic protocol feedback, and turn-by-turn action loops.
• Provenance & Map Metrics: Real-time population-level metrics, live scene persistence, and measurement protocol bindings.
• Sovereign Architecture: Self-hosted Postgres and Redis custody architecture with strict server-side authorization on money-movement and protocol definitions.
• Multi-Tenancy: Blueprint publish authority gates and token execution modes supporting test and chargeable production runs.
• Pay-as-you-go ICS Billing (v2026.09.1): Organizations can burst beyond their included monthly ICS (Interaction Computed Signals) allowance, with overage metered at a flat per-ICS rate. Global and per-member spend caps, a live usage meter with proactive quota alerts, and self-serve billing via the Stripe Customer Portal. Billing currency defaults to USD (switchable to GBP).

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Bug Fixes & Stability

• Scene-Seed Concurrency: Fixed an editor authorization race condition when persisting scene seeds during rapid multi-user editing in Provenance.
• Session Rehydration: Resolved transient state desync in /stage dive when resuming suspended dives with deep history trees.
• Protocol Parameter Mapping: Corrected schema alignment when binding multi-variate measurement protocols to custom scenes.

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New Capabilities

• Programmatic Dive Engine: Core REST API endpoints (POST /api/v1/dive/open, act, close, status) enabling programmatic execution of Stage and Dive sessions.
• Situations Execution Matrix: Parameterized multi-turn loops for automated agent evaluation and scenario stress-testing.
• Developer Gateway: Clean JSON root endpoint at api.blankstate.ai with uptime probe handling, automated documentation routing, and hardened test sandboxing.

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Bug Fixes & Stability

• Uptime Probe Handling: Added native HEAD method support on root and /health endpoints to prevent false-positive alarms from external monitoring probes.
• Template Response Compatibility: Migrated internal gateway handlers to modern Starlette 1.x signatures to eliminate response buffering latency.
• Test Sandbox Isolation: Hardened test-token execution boundaries ensuring sandbox sessions cannot mutate cached production metrics.

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New Capabilities

• Live Worlds Reel & Stage Portal: Interactive dual-stream world reel with seamless cross-fading, vintage CRT screen aesthetics, and portal bubble transitions.
• Mobile-Responsive Optimization: Adaptive viewport layout with dynamic safe-area padding for edge-to-edge mobile devices.

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Bug Fixes & Stability

• Mobile Viewport Clipping: Fixed layout overflow on iOS Safari by replacing static viewport height units with dynamic 100svh and safe-area inset calculations.
• Video Reel Decoding Stalls: Resolved a video decoding stall in Chromium browsers when cycling between looped high-bitrate stage world previews.
• Shader Compositing: Optimized alpha compositing during portal bubble animations to prevent frame drops on low-power mobile devices.

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New Capabilities

• Rating Engine: Unbounded, ELO/Glicko-style Rating at the Diver, Stage, and category level. Replaces bounded scoring across S&D and Atlas.
• Gravity in Provenance: Provenance ships with Gravity: what-if scenario planning on the live population Signature.

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Bug Fixes & Stability

• Rating Convergence: Fixed variance stabilization in the Glicko update step when processing low-frequency Diver interaction sessions.
• Provenance Signature Caching: Resolved a cache invalidation bug where stale category aggregates persisted after manual recalculations.

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New Capabilities

• Turn-by-Turn Streaming: Low-latency Server-Sent Events (SSE) streaming for interactive turns via a two-part sentinel protocol ensuring reliable chunk demarcation across edge networks.
• Atlas Access: Atlas enterprise access moves to contracted, price-on-application (POA).

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Bug Fixes & Stability

• Streaming Sentinel Demarcation: Fixed a parser desynchronization where malformed network chunking could cause tool-call parameters to fragment mid-stream.
• Health Probe Overhead: Optimized /sgm/health probes by eliminating redundant live model embedding re-initialization on routine pings.

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New Capabilities

• Public Launch: Stage & Dive goes live at sand.blankstate.ai with anonymous Dive, free Diver Account, and Studio subscription tiers.
• Live Stage & Proxy Worlds: In-browser execution of live Stage Worlds and Proxy Worlds with continuous camera perspective and timeline scrubber controls.
• 3D Topographic Sensor Visualizer: Real-time terrain shader driven by live SGM (Spectral Geometric Manifold) measurement agent trails and dynamic illumination palettes.
• Fidelity Lab: Interactive workbench for testing interaction protocols with multi-select cast selection across synthetic and human personas, radar score visualizers, and domain scenario corpora.
• Arena: Opt-in mode for attributable Dives. Free, consented, revocable.

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Bug Fixes & Stability

• Timeline Scrubber Drift: Corrected frame-index drift when scrubbing backward across long session trajectory replays.
• GLSL Shader Precision: Fixed precision artifacts on mobile GPUs in the terrain shader by standardizing on high-precision float coordinates.

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New Capabilities

• SGM Sensor Bindings: Core API integration for Interaction Behavioural Fields (IBF) measurements via /api/v1/sense.
• Eigenspace Compilation: Native /compile-eigenspace endpoint for trajectory projection and state manifold calculations.

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Bug Fixes & Stability

• Batch Serialization: Fixed a payload parsing error in batch sensing requests where trailing commas caused serialization failures.
• Matrix Dimensionality: Corrected bounds validation on high-dimensional eigenspace projection matrices.

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New Capabilities

• SGM 0.2: Production multi-modal model unifying text, transcript, audio, video, and environment observation on the same instrument.
• ICS Metering: Every measurement produces an Interaction Computed Signal (ICS): one per unique nuance activated.
• Provenance Noise Gates: Noise-gate calibration and selective protocol sharing across organization tenants in Provenance.

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Bug Fixes & Stability

• Quota Boundary Enforcement: Fixed a timestamp boundary condition where monthly ICS quota resets failed to trigger at exact calendar month rollovers.
• Multi-Modal Alignment: Resolved audio/video synchronization drift during long-form multi-modal sensor ingestion.

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New Capabilities

• IBF API v1: Stable API release at https://api.blankstate.ai/api/v1/.
• Token Management Dashboard: Developer API token controls with real-time ICS quota tracking and organization-level resource isolation.

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Bug Fixes & Stability

• Token Scope Validation: Fixed an edge case where revoked API tokens could continue reading cached non-sensitive protocol metadata.
• Rate Limit Headers: Standardized Retry-After and X-RateLimit-Remaining response headers across all rate-limited endpoints.

• Spectral Manifold Engine: Preview of the 1.5 spectral feature engine with interaction derivation and noise grid calibration.
• Anonymized Scene Perspectives: Culture and population-level metric aggregation in Provenance with selective access controls.

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New Capabilities

• Stage Interface: Early interactive Stage authoring interface and initial Eva assistant workflows.
• Sense Client 1.0: Initial typed client SDK bindings for the Sense API with Redis-backed validation.

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Bug Fixes & Stability

• Client Connection Pooling: Fixed Redis connection leaks in the Sense client during high-concurrency burst workloads.
• Schema Validation Errors: Improved descriptive error formatting when payload fields violated Protocol type constraints.

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New Capabilities

• IBF Language Safeguards: Interaction Behavioural Fields safety gates, multi-edit protocol buffering, and trajectory replay verification.
• Replay Rationale: Natural language query and rationale extraction within /replay.

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Bug Fixes & Stability

• Replay Indexing: Corrected timestamp drift in trajectory replay indexing across multi-agent turns.
• Protocol Buffering: Fixed memory overhead in multi-edit protocol buffers during rapid undo/redo cycles.

• Protocol Blueprints: Reusable organizational blueprints, protocol caching, and public protocol sharing.
• Causal Trajectory Foundation: Initial formulation of causal interaction fields and multi-actant observation backbones.