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Practical articles on SDD workflows, AI coding agents, MCP servers, and the craft of building software with AI tools.
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The Complete Guide to Spec Driven Development (SDD)
Everything you need to know about SDD — what it is, why it matters for AI-assisted coding, the core workflow, and how to implement it in your team. The definitive reference on the methodology.
March 2026 · Pillar Content
AI Coding Tools Compared: Claude Code vs Cursor vs Windsurf vs Copilot
An honest comparison of the six major AI coding tools in 2026 — MCP support, agent capabilities, pricing, and who each tool is actually best for.
March 2026
How to Set Up MCP Servers in Claude Code, Claude Desktop, and Cursor
Step-by-step setup guide for every major AI coding tool. Real config examples, troubleshooting tips, and how to verify your servers are working.
February 2026
Vibe Coding is Fun Until It Breaks — How Specs Keep AI on Track
Vibe coding is amazing for small tasks. Here's an honest look at where it falls apart at scale and how to add just enough structure to keep AI agents useful on real projects.
February 2026
10 Best MCP Servers for Developers in 2026
The servers developers are actually using — filesystem, GitHub, Planu, Slack, Postgres, Brave Search, Playwright, Supabase, Memory, and Sequential Thinking. What each does and who it's for.
February 2026
SDD vs TDD: Why Spec Driven Development Changes the Game for AI-Assisted Coding
TDD changed how we write code. SDD changes how we direct AI agents. Learn the real differences, when each approach shines, and why combining them gives you the best of both worlds.
Why AI Coding Agents Need Specs (And What Happens Without Them)
AI agents are powerful — until they lose context, contradict each other, or go off-spec. Discover why structured specs are the missing layer in most AI development workflows.
What is an MCP Server? A Plain-English Guide for Developers
The Model Context Protocol is reshaping how AI agents interact with tools. This guide explains what MCP servers are, how they work, and why developers are building with them.
SDD vs Vibe Coding: Why Specs Make AI Development Scale
Vibe Coding describes features informally to AI and hopes for the best. Spec Driven Development gives your AI a precise blueprint. Here is why the difference matters at scale — and what the competitive landscape looks like in 2026.
March 2026
Live Demo: SDD vs Vibe Coding in 10 Minutes
A step-by-step demo script showing the difference between informal AI coding and Spec Driven Development with Planu. Use this for conference talks, team workshops, or to convince a skeptical colleague.
March 2026
SDD is BDD/TDD for the AI Era — A Guide for Software Crafters
Software Crafters already believe in engineering discipline. Spec Driven Development applies that same discipline to AI-assisted development. The parallel is exact — write the spec first, then let the AI write the code.
March 2026
About This Blog
These articles are written for developers who use AI coding tools daily — people who care about workflow quality, not just raw output. No filler, no fluff.
If you want to get started with Planu, head to the Getting Started guide.