https://quesar.cloud Build assistant workflows, memory systems, and developer tools with inspectable sources and explicit implementation boundaries. en-us Sat, 10 Oct 2026 13:20:49 GMT https://quesar.cloud/blog/abi-is-rust-now https://quesar.cloud/blog/abi-is-rust-now The ABI runtime moved from Zig to a nightly-Rust workspace on July 30, 2026, and WDBX became its own sibling workspace in August. Here is what that means for anyone building from source. ENGINEERING MLAI Research Tue, 29 Sep 2026 00:00:00 GMT https://quesar.cloud/changelog#v0.15.0 https://quesar.cloud/changelog#v0.15.0 Every /docs article is re-checked against the ABI, WDBX and Gama READMEs and carries the date of that review. Each article renders its own reference material (MCP tools, site surfaces, WDBX V2 downloads) from the same records as the /docs hub, so the two cannot disagree. The MCP article lists all twelve contract-covered tools; WDBX V2 is described as the earlier Rust project it documents, not a Zig mirror. CHANGELOG Tue, 29 Sep 2026 00:00:00 GMT https://quesar.cloud/changelog#v0.14.0 https://quesar.cloud/changelog#v0.14.0 quesar.cloud leaves the Grok App Builder: sandbox tooling and platform chrome removed, bun and TypeScript throughout. Sign-in is first-party Better Auth: email and password, passkeys, and Google, Apple or X when configured. abi-mcp's optional loopback listener serves persistent MCP 2024-11-05 HTTP+SSE sessions; POST /message without a session keeps the one-shot reply. Not Streamable HTTP. CHANGELOG Wed, 23 Sep 2026 00:00:00 GMT https://quesar.cloud/changelog#v0.13.0 https://quesar.cloud/changelog#v0.13.0 The MLAI corporate site is merged into quesar.cloud, which becomes the only MLAI and Quesar site; the old repository is archived. Chat audits and workspace tokens sealed with AES-256-GCM; account deletion purges per-user data. https://quesar.cloud serves the static build from GitHub Pages. CHANGELOG Tue, 22 Sep 2026 00:00:00 GMT https://quesar.cloud/changelog#v0.12.0 https://quesar.cloud/changelog#v0.12.0 Research publications re-reviewed against pinned ABI and WDBX commits, each with its status, limitations and review date. CHANGELOG Sun, 06 Sep 2026 00:00:00 GMT https://quesar.cloud/research/ai-overview https://quesar.cloud/research/ai-overview Understand how Abbey and ABI route requests, produce local responses, and expose bounded checks. OVERVIEW MLAI Research Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/wdbx-overview https://quesar.cloud/research/wdbx-overview Durable records, searchable vectors and inspectable retrieval for applications that need continuity. OVERVIEW MLAI Research Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/sea-overview https://quesar.cloud/research/sea-overview Select a bounded set of relevant records before assembling an assistant context. OVERVIEW MLAI Research Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/gpu-overview https://quesar.cloud/research/gpu-overview Inspect native vector-operation support and explicit CPU fallback. OVERVIEW MLAI Research Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/mcp-overview https://quesar.cloud/research/mcp-overview Expose bounded ABI operations through a documented tool interface. OVERVIEW MLAI Research Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/tui-overview https://quesar.cloud/research/tui-overview Inspect local runtime state and explore session-based agent interactions. OVERVIEW MLAI Research Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/gpu-implementation-guide https://quesar.cloud/research/gpu-implementation-guide Inspect native vector-operation support and explicit CPU fallback. IMPLEMENTATION GUIDE MLAI Runtime Engineering Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/mcp-implementation-guide https://quesar.cloud/research/mcp-implementation-guide Expose bounded ABI operations through a documented tool interface. IMPLEMENTATION GUIDE MLAI Runtime Engineering Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/research/tui-implementation-guide https://quesar.cloud/research/tui-implementation-guide Inspect local runtime state and explore session-based agent interactions. IMPLEMENTATION GUIDE MLAI Runtime Engineering Tue, 01 Sep 2026 00:00:00 GMT https://quesar.cloud/changelog#v0.11.0 https://quesar.cloud/changelog#v0.11.0 The WDBX crates are extracted from ABI into the wdbx workspace with history preserved; the abi- crate prefix is kept deliberately and ABI builds against it as a sibling. CHANGELOG Sat, 22 Aug 2026 00:00:00 GMT https://quesar.cloud/changelog#v0.10.0 https://quesar.cloud/changelog#v0.10.0 The ABI runtime lands as a nightly-Rust workspace; the Zig tree is torn down. ./tools/check.sh is the validation gate and ./tools/cargo.sh the pinned Cargo wrapper. CHANGELOG Thu, 30 Jul 2026 00:00:00 GMT https://quesar.cloud/blog/wdbx-v2-release https://quesar.cloud/blog/wdbx-v2-release The second iteration of the WDBX runtime ships an observable pipeline: block-chain memory with temporal queries, multimodal input fusion, an async neural job queue, and a research-alignment telemetry layer that scores every turn against the constitution. RELEASE MLAI Research Tue, 09 Jun 2026 00:00:00 GMT https://quesar.cloud/blog/on-saying-im-not-sure https://quesar.cloud/blog/on-saying-im-not-sure A note in Abbey's voice — the empathetic-polymath persona — on why an honest “I don't know” is one of the most useful things an agent can say. FROM ABBEY Abbey Mon, 08 Jun 2026 00:00:00 GMT https://quesar.cloud/blog/inside-wdbx-hybrid-ranker https://quesar.cloud/blog/inside-wdbx-hybrid-ranker Semantic similarity is only the first of four factors. Here is the exact score WDBX uses to rank retrieval candidates — and why every factor is bounded to [0,1]. ENGINEERING MLAI Research · WDBX Core Sat, 06 Jun 2026 00:00:00 GMT https://quesar.cloud/blog/what-the-model-sees-sea https://quesar.cloud/blog/what-the-model-sees-sea Before a model reasons, something must choose which records reach the context window. SEA scores eight criteria, then packs greedily under a hard token budget. RESEARCH MLAI Research · Abbey Thu, 04 Jun 2026 00:00:00 GMT https://quesar.cloud/blog/weights-behind-the-personas https://quesar.cloud/blog/weights-behind-the-personas Persona routing is not a hidden model call. It is a normalized weight vector with hard policy overrides and an inspectable strategy decision. SAFETY MLAI Safety Engineering Tue, 02 Jun 2026 00:00:00 GMT https://quesar.cloud/research/wdbx-weighted-backtrace-memory-store https://quesar.cloud/research/wdbx-weighted-backtrace-memory-store A technical note on durable storage, approximate vector search and inspectable ranking, with legacy and canonical episode paths distinguished. CORE ARCHITECTURE MLAI Research · WDBX Core Mon, 01 Jun 2026 00:00:00 GMT https://quesar.cloud/research/sparse-evidence-attention-context-assembly https://quesar.cloud/research/sparse-evidence-attention-context-assembly A source-backed account of eight-signal selection and bounded prompt assembly. RESEARCH MLAI Research · Abbey Mon, 01 Jun 2026 00:00:00 GMT https://quesar.cloud/research/multi-persona-routing-policy-weights https://quesar.cloud/research/multi-persona-routing-policy-weights A corrected account of deterministic local profile routing and adaptive state in the SEA path. ROUTING MLAI Research · Agent Safety Mon, 01 Jun 2026 00:00:00 GMT https://quesar.cloud/blog/explainable-last-move https://quesar.cloud/blog/explainable-last-move A practical guide to capturing retrieval paths, policy checks, and operator decisions so teams can debug autonomous workflows after the fact. FIELD NOTE MLAI Engineering Thu, 21 May 2026 00:00:00 GMT https://quesar.cloud/blog/production-ready-agent-metrics https://quesar.cloud/blog/production-ready-agent-metrics Latency and accuracy are not enough. The gate we are building tracks tool-boundary violations, source coverage, rollback paths, abstention quality, and human-review burden. ENGINEERING MLAI Safety Engineering Mon, 18 May 2026 00:00:00 GMT https://quesar.cloud/blog/vector-search-to-backtrace-graphs https://quesar.cloud/blog/vector-search-to-backtrace-graphs Why retrieval infrastructure needs relationship-aware context and why ranking alone is not sufficient for high-stakes answer generation. RESEARCH MLAI Research Tue, 12 May 2026 00:00:00 GMT https://quesar.cloud/blog/separate-planning-review-execution https://quesar.cloud/blog/separate-planning-review-execution Role separation lets teams encode checks and balances into an AI workflow instead of relying on a single agent to police itself. SAFETY MLAI Safety Engineering Fri, 08 May 2026 00:00:00 GMT https://quesar.cloud/research/wdbx-graph-weights-traceable-retrieval https://quesar.cloud/research/wdbx-graph-weights-traceable-retrieval Inspect how a candidate ranking can expose the factors that influenced it. CORE ARCHITECTURE MLAI Research · WDBX Core Fri, 01 May 2026 00:00:00 GMT https://quesar.cloud/blog/calm-control-surfaces https://quesar.cloud/blog/calm-control-surfaces Interface details that prevent overload: progressive disclosure, confidence bands, decision diffs, and emergency stop affordances. PRODUCT MLAI Product Wed, 29 Apr 2026 00:00:00 GMT https://quesar.cloud/blog/incident-reviews-from-ai-logs https://quesar.cloud/blog/incident-reviews-from-ai-logs How to structure traces so teams can reconstruct context, model output, policy decisions, tool calls, and human overrides after a production event. OPERATIONS MLAI Operations Sat, 18 Apr 2026 00:00:00 GMT https://quesar.cloud/blog/private-ai-is-not-invisible-ai https://quesar.cloud/blog/private-ai-is-not-invisible-ai Offline and VPC deployments still need measurable controls: local audit trails, release gates, repeatable evals, and operator-visible confidence signals. DEPLOYMENT MLAI Engineering Sat, 11 Apr 2026 00:00:00 GMT https://quesar.cloud/research/policy-locked-tool-use-multi-agent https://quesar.cloud/research/policy-locked-tool-use-multi-agent A proposed evaluation method for explicit authorization boundaries in agent workflows. SAFETY MLAI Safety Engineering Wed, 01 Apr 2026 00:00:00 GMT https://quesar.cloud/research/latency-budgets-real-time-orchestration https://quesar.cloud/research/latency-budgets-real-time-orchestration A proposed method for measuring the stages that determine interactive response time. ENGINEERING MLAI Runtime Engineering Sun, 01 Mar 2026 00:00:00 GMT https://quesar.cloud/blog/neural-backtracking https://quesar.cloud/blog/neural-backtracking Hallucination debugging is archaeology. WDBX chains every interaction block to its parent so you can prove nobody edited the record — and so a system can be built to walk back to the exact moment a model drifted. FIELD NOTE MLAI Research · WDBX Core Wed, 18 Feb 2026 00:00:00 GMT https://quesar.cloud/research/backtrace-confidence-signals-hallucination https://quesar.cloud/research/backtrace-confidence-signals-hallucination A proposed study of whether visible evidence helps reviewers detect unsupported answers. RESEARCH MLAI Research Sun, 01 Feb 2026 00:00:00 GMT https://quesar.cloud/blog/zig-016-migration https://quesar.cloud/blog/zig-016-migration Zig 0.16 rebuilt std.io around vtable-based Reader and Writer interfaces. Ninety-five files later, here's what the migration actually looked like — and the patterns we standardized on. ENGINEERING MLAI Runtime Engineering Thu, 08 Jan 2026 00:00:00 GMT https://quesar.cloud/research/vector-index-maintenance-continuous-ingestion https://quesar.cloud/research/vector-index-maintenance-continuous-ingestion A source-based guide to persistence and index maintenance boundaries. SCALABILITY MLAI Runtime Engineering · WDBX Core Thu, 01 Jan 2026 00:00:00 GMT https://quesar.cloud/research/human-approval-gates-operators-use https://quesar.cloud/research/human-approval-gates-operators-use A proposed usability study for understandable approval and refusal flows. ETHICS & SAFETY MLAI Safety Engineering · Product Mon, 01 Dec 2025 00:00:00 GMT https://quesar.cloud/blog/why-zig https://quesar.cloud/blog/why-zig Garbage collection pauses are invisible in the mean and fatal in the tail. WDBX is Zig because a real-time vector database is a p99 product, not a p50 product. FIELD NOTE MLAI Runtime Engineering Sun, 30 Nov 2025 00:00:00 GMT https://quesar.cloud/research/chunk-provenance-long-context-retrieval https://quesar.cloud/research/chunk-provenance-long-context-retrieval A proposed application pattern for preserving source references through document retrieval. CORE ARCHITECTURE MLAI Research · WDBX Core Sat, 01 Nov 2025 00:00:00 GMT https://quesar.cloud/research/offline-first-ai-sensitive-data https://quesar.cloud/research/offline-first-ai-sensitive-data A bounded description of local deterministic processing and its evaluation uses. ENGINEERING MLAI Runtime Engineering Wed, 01 Oct 2025 00:00:00 GMT https://quesar.cloud/research/prompt-injection-drills-agentic-systems https://quesar.cloud/research/prompt-injection-drills-agentic-systems A proposed adversarial test set for agent boundaries and failure handling. SAFETY MLAI Safety Engineering Mon, 01 Sep 2025 00:00:00 GMT