Primers
Get oriented on the AI stack, fast. Each primer covers one tool or technology in under 25 minutes — what it is, why it matters right now, and how to get started. Every primer is dated and re-verified as the ecosystem moves.
Opus 4.7: Task Budgets and the Memory Tool
What actually changed in Claude Opus 4.7 — the task budget system, the persistent memory tool, and how they combine to make long-horizon agents finally reliable.
Caveman Claude: the skill everyone's talking about
What the viral Caveman skill actually does, why a one-paragraph prompt trick ate developer Twitter this month, and whether the 75%-fewer-tokens claim survives contact with real work.
MCP in 20 Minutes
What the Model Context Protocol is, why it matters now that it's vendor-neutral, and how to connect your first MCP server from Claude Code, Cursor, or ChatGPT in under ten minutes.
Your first eval suite with Braintrust
The 60-minute path from 'we ship LLM features on vibes' to 'we block merges on eval regressions'. Datasets, scorers, experiments, and the CI wiring that makes it real.
Prompt Caching: 90% Cost Reduction in 5 Minutes
How Anthropic's prompt caching works, why the February 2026 workspace-isolation update made it finally safe for multi-tenant products, and the exact code changes to cut your API bill by an order of magnitude.
Local coding on an M4 Mac: Ollama + Devstral
When a local model earns its slot. The full setup on Apple Silicon — Ollama, Devstral Small 24B, Metal acceleration, and the editor integrations that make local coding stop feeling like a demo.
pgvector: why most RAG should just be Postgres
The contrarian case. pgvector + pgvectorscale gets you HNSW-indexed vector search inside the database you already operate. When a dedicated vector DB is worth it, and when it's just operational debt.
Build your first MCP server in TypeScript
Ten minutes from zero to an MCP server exposing a useful tool to Claude Code, Cursor, or any MCP client. The SDK, the transports, the gotchas.
Claude Code from zero to daily driver
The path from first install to 'I use this for everything': plan mode, hooks, skills, MCP, subagents, settings hierarchy, and the habits that actually stick.