Expand any topic for concept, action steps, and pro tips.
Concept
Prompt Engineering Masterclass: treat models as probabilistic teammates. Reliability comes from evals, constraints, retrieval, and human checkpoints — not vibes.
Why it matters
AI features that cannot be measured get worse in production. Founders who instrument quality ship durable leverage.
Action steps
1Specify the user job and success criteria before picking a model.
2Build a golden set of 20-50 eval examples for the critical path.
3Start with the simplest stack (prompt + tools) before multi-agent complexity.
4Log prompts, outputs, latency, and cost per successful task.
5Add guardrails for PII, jailbreaks, and hallucinated actions that spend money.
6Ship to a narrow cohort; compare against a non-AI baseline.
Done when
You have evals green on the golden set and a production path with cost caps.
Metrics
· Task success rate
· Cost per successful task
· Latency p95
· Human override rate
Anti-patterns
· Agents without evals
· Putting secrets in prompts
· Ignoring cost until the bill arrives
Operator tip
If you cannot define correct, you cannot ship AI. Write the rubric first.
Tools
CursorClaudeOpenAI APIPostHog
02
Building AI-Native Applications
6 min · concept · actions · metrics · done-when
Mark
03
Autonomous AI Agents & Orchestration
6 min · concept · actions · metrics · done-when
Mark
04
Model Context Protocol (MCP)
6 min · concept · actions · metrics · done-when
Mark
05
RAG & Vector Knowledge Bases
6 min · concept · actions · metrics · done-when
Mark
06
OpenAI API Integration
6 min · concept · actions · metrics · done-when
Mark
07
Claude 3.5 & Anthropic Ecosystem
6 min · concept · actions · metrics · done-when
Mark
08
Google Gemini & Multimodal AI
6 min · concept · actions · metrics · done-when
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09
Local LLMs & Self-Hosting
6 min · concept · actions · metrics · done-when
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10
AI Automation & Workflow Design
6 min · concept · actions · metrics · done-when
Mark
Stage quiz
AI for founders check
5 questions · pass at 70%
1.Before multi-agent systems, you should usually have:
✓A golden eval set and success rubric
✓Ten agents with no metrics
✓Only a viral demo video
✓No logging of outputs
2.RAG is mainly used to:
✓Replace all databases forever
✓Ground model answers in your retrieved knowledge
✓Train a foundation model from scratch cheaply
✓Avoid thinking about product UX
3.A production AI feature should track:
✓Only stars on GitHub
✓Task success, cost, latency, and overrides
✓Nothing — models are magic
✓Only marketing impressions
4.High-risk AI actions (spend money, send email, change data) should:
✓Run fully autonomously on day one
✓Require human confirmation until trusted
✓Be hidden from users
✓Use the largest model only
5.Best early AI product strategy:
✓Wrapper with no workflow ownership
✓Own a painful workflow end-to-end with measurable quality