Blackwell Systems

About

Dayna Blackwell is a software engineer, open source author, and published researcher. Founder of Blackwell Systems .

I build production backend systems, AI-native developer tooling, and the infrastructure that makes other engineers more effective. 25+ open source projects in Go, Rust, and C. 35,000+ monthly downloads across pip, npm, Docker, Homebrew, and Winget. 4 published research papers with DOIs. 26 PRs merged into Google, Anthropic, Grafana, LangChain, and Stretchr/testify.

What I’ve Built

knowing is a content-addressed code intelligence engine that beats every competitor in the category with statistical proof. P@10=0.278 across 308 tasks, 16 repos, 8 languages: 3.2x codegraph (19K stars), 5.05x GitNexus (40K stars), 5.35x Gortex, 12.1x Aider, 18.5x grep. 23 extractors spanning 26 languages/formats. 12 self-adapting retrieval mechanisms. 28 MCP tools and 8 resources across 7 planes. Supply chain detection without executing code (1.0% FP rate). OpenTelemetry runtime trace ingestion. Community detection with Merkle roots. GCF wire format (84% fewer tokens than JSON). Single Go binary, zero dependencies. Published whitepaper: Content-Addressing as a Computation Primitive for Software Relationship Intelligence (DOI: 10.5281/zenodo.20342255).

agent-lsp is a stateful MCP server runtime over real language servers. 66 tools, 24 Agent Skills, speculative execution engine, 30 CI-verified languages. 5,500+ monthly downloads. Listed on the official MCP Registry, Glama (A-tier), and awesome-mcp-servers.

mcp-assert is the deterministic testing standard for MCP servers. 28,000+ total downloads across 6 distribution channels. Shipped from 0-to-1 in one week. 102 servers scanned, 34 upstream bugs found. Adopted as CI standard by Ant Group (antvis) and wyre-technology (25+ repos).

polywave is a formally specified parallel agent coordination protocol (6 invariants, 48 execution rules, 7 participant roles, 5-layer worktree isolation). 4-5x measured speedup. knowing (94K LOC) was built using polywave. Go SDK: 33 packages, 75+ CLI commands, 4 LLM backends, autonomous daemon mode. Listed on ComposioHQ/awesome-codex-skills (10.6K stars).

claudewatch is a 32-tool MCP server for AI development observability. PostToolUse hooks, session analytics, CLAUDE.md effectiveness scoring, friction pattern classification.

GCP Emulator Platform: 5 composable emulators (Secret Manager, KMS, IAM, Eventarc, auth) with shared hook architecture. The Secret Manager emulator is the most widely adopted community solution, ranked #1 on Google/Bing/DuckDuckGo, recommended by Google AI Overview, Gemini, and GitHub Copilot. 45K+ downloads. Enterprise adoption by Flipt (4.8K stars), Reindeer AI, and sugar-org/swarm-external-secrets.

No. 6 all-time contributor to mcp-go (8.7K stars). Full open source portfolio .

Professional Work

Backend Enterprise Developer at Best Western Hotels & Resorts, where I architect and operate the core loyalty platform backend serving millions of members across 5,000+ properties in 120 countries. This platform is the foundational layer consumed by nearly every engineering team in the company. I designed the Digital Wallet (5 currencies), the serverless promotion rules engine (Lambda, EventBridge, DynamoDB, Redis), and the real-time CDC pipeline. Revenue-critical systems with 24/7 on-call. Founding member of the Agentic Development Group, leading enterprise-wide rollout of AI-enhanced engineering workflows.

Publications

Blackwell, D. (2026). Content-Addressing as a Computation Primitive for Software Relationship Intelligence. Technical Report.
doi:10.5281/zenodo.20342255

Hierarchical Merkle trees over code relationship edges as a query-optimization substrate. Self-adapting retrieval, cryptographic proofs of relationship presence and absence, supply chain detection. No prior art found in a survey of Sourcegraph, Kythe, CodeQL, Bazel, Neo4j, IPFS, and Nix. Companion implementation: knowing .

Blackwell, D. (2026). Normalization Confluence in Federated Registry Networks. Technical Report.
doi:10.5281/zenodo.18677400

Extends normalization confluence to federated environments where multiple registries with independent invariants are connected by morphisms encoding cross-organizational constraints. Proves federated convergence requires only validity preservation for tree-shaped networks.

Blackwell, D. (2026). Normalization Confluence for Registry-Governed Stream Processing. Technical Report.
doi:10.5281/zenodo.18671870

A third regime for coordination-free convergence in distributed systems: normalization confluence, where non-commutative operations converge through compensation. Companion implementations: nccheck (verification DSL) and gsm (Go runtime with O(1) event application).

Blackwell, D. (2026). Drainability: When Coarse-Grained Memory Reclamation Produces Bounded Retention. Technical Report.
doi:10.5281/zenodo.18653776

Proves the O(1) vs Omega(t) dichotomy for coarse-grained allocators: drainability produces bounded retention, its absence produces unbounded growth. Companion implementation: libdrainprof (C profiler, sub-2ns overhead).

Books

You Don’t Know JSON (107,000 words) covers JSON ecosystem architecture, schema validation, binary formats (MessagePack, CBOR, Protocol Buffers), streaming architectures, security patterns, API design, and testing strategies. Available on Leanpub.

What I Write About

This blog provides technical deep-dives into programming language fundamentals, distributed systems, and AI-native development tooling.

Code Intelligence & AI Tooling:

Language Design & Systems:

  • Value semantics vs reference semantics across languages
  • Memory models, concurrency primitives, escape analysis
  • Why modern languages moved away from OOP patterns

Distributed Systems:

  • Event-driven architectures at scale
  • Idempotent message handling and deduplication patterns
  • Serverless patterns and AWS architecture

Contact