The fundamentals of Agentic Coding (AKA Vibe Coding)
summary
Claim: the model is the brain (about 95% of capability) but the crucial engineering work is the harnesses that let text-only models actually act. Demo uses the OpenAI JavaScript SDK pattern: declare function tools (read files, run tests), model returns intentions, harness executes and feeds results back, enabling automated test runs and code edits. AgentsMD/skills are just injected markdown docs; diagrams come from generating markup. Closed cloud-code locks the harness; pick one openable harness and iterate.
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chapters (9)
- 0:00Agentic Coding intro
- 1:54AI coding tools components
- 4:24Tools empower AI agents
- 6:59Agent-user feedback loop
- 8:25Effective use tips
- 10:10Context engineering
- 12:20Skills and MCP demystified
- 13:49Open source harnesses
- 15:18Summary and start








