Observing Codex MCP Tool Calls with Langfuse
A practical local setup for tracing Codex MCP requests, tool execution, and evaluation without sending application data to the cloud.
Read storypgvector and RAG, Explained Through a Real Knowledge Workflow
A plain-English walkthrough of how Markdown knowledge pages become searchable AI context using embeddings, pgvector, HNSW, and evaluation checks.
Read storyVertical Slice Architecture with Dependency-Cruiser
How vertical feature slices and dependency rules can keep product workflows easier to change.
Read storyZod Beyond Validation
How runtime schemas can document boundaries, normalize inputs, and keep API and UI contracts consistent.
Read storyLocalization in Product Apps
Why localization is a product boundary that affects routes, validation, dates, permissions, and support.
Read storyPragmatic Drag and Drop for Real Ordering Tasks
How drag-and-drop UI can support ordering workflows without hiding keyboard access or persistence rules.
Read storyMCP as a Safe AI Integration Boundary
How I think about model tools as narrow product interfaces instead of hidden access to an application.
Read storyshadcn-Style UI as an Owned Product System
Why copied UI primitives can become a practical product system instead of a black-box dependency.
Read storyAstro for Documentation and a Professional Site
Why a static-first Astro site is a good fit for curated engineering writing and professional notes.
Read storyDense Operational UI with Tables and Editors
Why some product workflows need dense tables, dirty-state tracking, and careful batch saves.
Read storyVercel AI SDK with Explicit Tool Boundaries
Why AI tools need schemas, permissions, confirmation, and audit trails before they change product data.
Read storyTesting Product Workflows with Vitest and Playwright
How I split workflow tests between fast service checks and a few browser paths that matter.
Read storyZod, OpenAPI, and Swagger for API Contracts
How runtime validation and readable docs help keep public API behavior from drifting.
Read storypg-boss for Durable Background Jobs
Why I used a database-backed job queue for slow product workflows, and what had to be visible to users.
Read storyPrisma and PostgreSQL as the Product Source of Truth
Why durable product state belongs in the database, and where Prisma should stop leaking into the app.
Read storyReact Router for Full-Stack Product Workflows
How route loaders and actions can make user tasks explicit without putting every rule in the route.
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