Joshua Fields — Software Engineer & Creative Technologist

Technical Writing

Engineering articles by Joshua Fields on AI agent authorization, real-time voice AI, explainable AI systems, backend authorization infrastructure, and production full-stack delivery.

Per-object permissions in Django that roll back with atomic() (2026-11-03)
Keeping Revisions in Commit Order on Postgres (2026-10-28)
Authorizing AI Agents: Zanzibar-Style Permissions for MCP Tool Calls (2026-10-25)
Building pemba: An Embedded Zanzibar-Style Authorization Engine in Rust (2026-10-19)
Building Authorization Infrastructure with SpiceDB, Go and Kubernetes (2026-06-22)
Building Real-Time Voice AI Applications with LiveKit and FastAPI (2026-06-22)
Designing Explainable AI Matchmaking Systems (2026-06-22)
When Should Governments Pull the Plug on AI Models? (2026-06-22)

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