Hyunjoong Kim's Technology Blog

Practical writing on AI agents, SDLC documentation automation, full-stack architecture, and product validation.

29 results

07Engineering
2026-06-05 · 9 min

How to Design Agent Runbooks for AI-Native Development Teams

A practical guide to goals, permissions, verification, and escalation rules for teams adopting coding agents such as Claude Code and Codex.

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08Engineering
2026-04-07 · 10 min

The real bottleneck in the MCP era is not the model, it's permissions

As AI agents become better at using tools, the bottleneck shifts from model quality to permission design. This post lays out a least-privilege operating model for MCP-based tool use.

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09Engineering
2026-04-06 · 9 min

What Is a Vector Database? Why It Matters for AI Search and RAG

A practical explanation of vector databases, how they differ from traditional databases, and why they matter for AI search, RAG, and recommendation systems.

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10Engineering
2026-04-06 · 10 min

How Vector Databases Work: Embeddings, Retrieval, and Matching in Practice

A technical explanation of how vector databases store embeddings, search them with ANN, and match results back to original documents.

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11Engineering
2026-04-03 · 10 min

Agent Governance Is the Architecture: The Real Control Plane in the MCP Era

If MCP standardized tool connectivity, permissions, policy, audit, and isolation are what make production AI agents safe.

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12Engineering
2026-04-02 · 11 min

MCP Is Not the Architecture: What Production AI Agents Actually Need

MCP, multi-agent workflows, and tool integrations are hot right now, but production systems live or die by context, state, and control planes — not the protocol alone.

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